阅读说明：本技术 吹雪机机具 (Snow blower machine ) 是由 埃里克·施温格尔 詹森·莱格特 于 2020-03-16 设计创作，主要内容包括：机具(100；100’；100”；200),诸如吹雪机机具和铲斗,具有形成壳体的框架(122；122’；122”；222),所述壳体具有至少一个孔(262；264),所述至少一个孔被布置成为其上安装有所述机具的动力机器(10)的操作者提供了改善的可见性。(An implement (100; 100 '; 100 "; 200), such as a snow blower implement and a bucket, has a frame (122; 122'; 122"; 222) forming a housing having at least one aperture (262; 264) arranged to provide improved visibility to an operator of a power machine (10) on which the implement is mounted.)

1. An implement (100; 100'; 100 "; 200) configured to be coupled to an implement interface (40) of a power machine (10), the implement comprising:

a power machine interface (110; 110 '; 110 "; 210) having a machine mount (112; 112'; 112"; 212), the power machine interface configured to engage with an implement interface of the power machine; and

a tool (120; 120 '; 120 "; 220) coupled to the power machine interface, the tool having a frame (122; 122'; 122"; 222) forming a housing, wherein the housing includes at least one aperture (262; 264; 362; 364) formed therein configured and arranged to provide an operator of the power machine visibility of an implement working space therethrough when the operator operates the power machine.

2. The implement of claim 1, wherein the housing includes first and second spaced apart side plates (240; 242) outboard of the implement, and at least one laterally extending segment (244; 246; 248) between the first and second spaced apart side plates, wherein the at least one aperture is formed in the at least one laterally extending segment.

3. The implement of claim 2, wherein the implement is a snow blower, wherein the housing is an auger housing, and wherein the at least one laterally extending segment includes a bottom plate (248) extending between the side plates and configured to function as a scraper scooping snow into the housing.

4. The implement of claim 2, wherein the implement is a snow blower, wherein the housing is a screw conveyor housing, and wherein the at least one laterally extending segment includes a rear wall (244), a top wall (246) extending between the side plates, and a bottom plate (248) extending between the side plates and configured to function as a scraper scooping snow into the housing.

5. The implement of claim 4, wherein the at least one aperture is formed in a top wall of the housing.

6. The implement of claim 4, wherein the at least one aperture includes at least one set of apertures formed in the housing.

7. The implement of claim 6, wherein the at least one set of apertures formed in the housing includes at least one diagonally oriented slot formed in the housing.

8. The implement of claim 7, wherein the at least one set of apertures includes a plurality of diagonally oriented slots arranged parallel to one another.

9. A snow blower implement (100; 100'; 100 "; 200) configured to be coupled to an implement interface (40) of a power machine (10), the snow blower implement comprising:

a power machine interface (110; 110 '; 110 "; 210) having a machine mount (112; 112'; 112"; 212), the power machine interface configured to engage with an implement interface of the power machine; and

a rotary snow blowing tool (120; 120 '; 120 "; 220) coupled to the power machine interface, the rotary snow blowing tool having a frame (122; 122'; 122"; 222) forming an auger housing, wherein the auger housing comprises:

first and second spaced apart side plates (240; 242) located outside of the auger housing;

at least one laterally extending segment (244; 246; 248) between the spaced apart first and second side plates; and

an aperture (262; 264) formed in the at least one laterally extending segment to provide visibility of an implement working space through the aperture to an operator of the power machine.

10. The snow blower implement of claim 9, wherein the at least one laterally extending segment in which the aperture is formed is a top wall of the auger housing.

11. The snow blower implement of claim 9, wherein the apertures comprise a first set of apertures arranged in a pattern.

12. The snow blower implement of claim 11, wherein the apertures include a second set of apertures arranged in a pattern, each of the first and second sets of apertures being formed on a different side of the at least one laterally extending segment.

13. An implement (100; 100'; 100 "; 200) configured to be coupled to an implement interface (40) of a power machine (10), the implement comprising:

a power machine interface (110; 110 '; 110 "; 210) having a machine mount (112; 112'; 112"; 212), the power machine interface configured to engage with an implement interface of the power machine; and

a tool (120; 120 '; 120 "; 220) coupled to the power machine interface, the tool having a frame (122; 122'; 122"; 222) forming a housing, wherein the housing includes at least one set of apertures (262; 264) formed therein configured and arranged to provide an operator of the power machine with visibility through the at least one set of apertures of an implement working space when the operator operates the power machine.

14. The implement of claim 13, wherein the housing includes first and second spaced apart side plates (240; 242) outboard of the implement, and at least one laterally extending segment (244; 246; 248) between the first and second spaced apart side plates, wherein the at least one set of apertures is formed in the at least one laterally extending segment.

15. An implement (100; 100'; 100 "; 200) configured to be coupled to an implement interface (40) of a power machine (10), the implement comprising:

a power machine interface (110; 110 '; 110 "; 210) having a machine mount (112; 112'; 112"; 212), the power machine interface configured to engage with an implement interface of the power machine;

a tool (120; 120'; 120 "; 220) coupled to the power machine interface, the tool comprising:

a frame (122; 122'; 122 "; 222) forming a housing;

an actuator (252) configured to perform a work function; and

at least one aperture (262; 264) formed in the housing and configured and arranged to provide an operator of the power machine with visibility of an implement working space therethrough when the operator is operating the power machine.

Background

The present disclosure relates to implements attachable to power machines and accessories for implements. More particularly, the present disclosure relates to implements or implement attachments that include snow blowers having auger housings.

For purposes of this disclosure, a power machine includes any type of machine that generates power for accomplishing a particular task or tasks. One type of power machine is a work vehicle. Work vehicles are typically self-propelled vehicles having a work implement, such as a lift arm (although some work vehicles may have other work implements), which may be manipulated to perform work functions. Some examples of work vehicle power machines include loaders, excavators, utility vehicles, tractors, and trenchers, to name a few.

One type of implement is a snow blower having an auger housing with an auger that rotates to push snow or other material toward an impeller. The impeller may then drive the snow or material up through a discharge chute. Such snow blowers having a screw conveyor and an impeller are usually two-stage snow blowers. Typically, it is difficult for an operator of a power machine on which a snow blower implement is mounted to clearly view the area directly in front of the auger housing of the implement. The housing itself blocks the operator's view, potentially exposing the implement to unintended objects or materials. This may result in damage to the snow blower or damage to the object or material.

The discussion in this background is merely provided for general background information and is not intended to be used as an aid in determining the scope of the claimed subject matter.

Disclosure of Invention

This summary and abstract are provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary and abstract are not intended to identify key features or essential features of the claimed subject matter.

The disclosed embodiments include a snow blower implement having an auger housing with one or more sets of apertures formed in a pattern or arrangement on a top or rear wall to provide visibility through the housing while minimizing material passing through the apertures.

According to disclosed embodiments, one general aspect includes an implement (100; 100'; 100 "; 200; 300; 400) configured to be coupled to an implement interface (40) of a power machine (10), the implement comprising: a power machine interface (110; 110 '; 110 "; 210; 310; 410) having a machine mount (112; 112 '; 112"; 212; 312; 412) and a tool (120; 120 '; 120 "; 220; 320; 400), the power machine interface configured to engage with an implement interface of the power machine; the tool is coupled to the power machine interface, the tool having a frame (122; 122'; 122 "; 222; 322; 422) forming a housing, wherein the housing includes at least one aperture (262; 264; 362; 364; 462; 464; 466; 468) formed therein that is configured and arranged to provide an operator of the power machine with visibility of an implement working space therethrough when the operator operates the power machine.

Implementations may include one or more of the following features. In the implement, the housing includes first and second spaced apart side plates (240; 242; 340; 342; 440; 442) outboard of the implement, and at least one laterally extending segment (244; 246; 248; 344; 348; 444; 446) between the first and second spaced apart side plates, wherein the at least one aperture is formed in the at least one laterally extending segment. In the implement, the at least one laterally extending segment includes a curved rear wall (344), and wherein the at least one aperture is formed in the curved rear wall.

Wherein the implement is a snow blower, wherein the housing is a screw conveyor housing, and wherein the at least one laterally extending segment includes a bottom plate (348) extending between the side plates and configured to function as a scraper scooping snow into the housing.

Wherein the implement is a snow blower, wherein the housing is a screw conveyor housing, and wherein the at least one laterally extending segment includes a rear wall (244), a top wall (246) extending between the side plates, and a bottom plate (248) extending between the side plates and configured to function as a scraper scooping snow into the housing. In the implement, the at least one aperture is formed in a top wall of the housing.

The implement wherein the at least one aperture comprises at least one set of apertures formed in the housing. The implement wherein the at least one set of apertures formed in the housing includes at least one diagonally oriented slot formed in the housing. In the implement, the at least one set of apertures includes a plurality of diagonally oriented slots arranged parallel to one another.

The implement is a bucket (400).

Another general aspect includes a snow blower implement (100; 100'; 100 "; 200; 300) configured to be coupled to an implement interface (40) of a power machine (10), the snow blower implement comprising: a power machine interface (110; 110 '; 110 "; 210; 310) having a machine mount (112; 112 '; 112"; 212; 312) configured to engage an implement interface of the power machine, and a rotary snow blowing tool (120; 120 '; 120 "; 220; 320); the rotary snow blowing tool is coupled to the power machine interface, the rotary snow blowing tool having a frame (122; 122'; 122 "; 222; 322) forming an auger housing, wherein the auger housing comprises: spaced apart first and second side plates (240; 242; 340; 342) located outside of the auger housing; at least one laterally extending segment (244; 246; 248; 344; 348) between the spaced apart first and second side plates; and an aperture (262; 264; 362; 364) formed in the at least one laterally extending segment to provide visibility of an implement working space therethrough to an operator of the power machine.

Implementations may include one or more of the following features. The snow blower implement wherein the at least one laterally extending segment formed with the aperture is a top wall of the auger housing. The snow blower implement wherein the at least one laterally extending segment formed with the aperture is an angled rear wall of the auger housing.

In the snow blower tool, the apertures include a first set of apertures arranged in a pattern. The snow blower implement wherein the apertures include a second set of apertures arranged in a pattern, each of the first and second sets of apertures being formed on a different side of the at least one laterally extending segment.

Another general aspect includes an implement (100; 100'; 100 "; 200; 300; 400) configured to be coupled to an implement interface (40) of a power machine (10), the implement comprising: a power machine interface (110; 110 '; 110 "; 210; 310; 410) having a machine mount (112; 112 '; 112"; 212; 312; 412) and a tool (120; 120 '; 120 "; 220; 320; 400), the power machine interface configured to engage with an implement interface of the power machine; the tool is coupled to the power machine interface, the tool having a frame (122; 122'; 122 "; 222; 322; 422) forming a housing, wherein the housing includes at least one set of apertures (262; 264; 362; 364; 462; 464; 466; 468) formed therein, the at least one set of apertures being configured and arranged to provide an operator of the power machine with visibility of an implement working space therethrough when the operator operates the power machine.

Implementations may include one or more of the following features. In the implement, the housing includes first and second spaced apart side plates (240; 242; 340; 342; 440; 442) outboard of the implement, and at least one laterally extending segment (244; 246; 248; 344; 348; 444; 446) between the first and second spaced apart side plates, wherein the at least one set of apertures is formed in the at least one laterally extending segment. The implement wherein the at least one laterally extending segment includes a curved rear wall (344), and wherein the at least one set of apertures is formed in the curved rear wall.

Another general aspect includes an implement (100; 100'; 100 "; 200; 300; 400) configured to be coupled to an implement interface (40) of a power machine (10), the implement comprising: a power machine interface (110; 110 '; 110 "; 210; 310; 410) having a machine mount (112; 112 '; 112"; 212; 312; 412) and a tool (120; 120 '; 120 "; 220; 320; 400), the power machine interface configured to engage with an implement interface of the power machine; the tool is coupled to the power machine interface, the tool comprising: a frame (122; 122'; 122 "; 222; 322; 422) forming a housing; an actuator (252) configured to perform a work function; and at least one aperture (262; 264; 362; 364; 462; 464; 466; 468) formed in the housing and configured and arranged to provide visibility of an implement working space to an operator of the power machine through the at least one aperture when the operator is operating the power machine.

Drawings

Fig. 1-3 are each a block diagram illustrating a representative implement on which embodiments of the present disclosure may be practiced and a functional system of a power machine to which the representative implement can be coupled.

FIG. 4 is a schematic perspective view of an implement including a snow blower having an auger housing that provides improved visibility for an operator of the power machine, according to an exemplary embodiment.

FIG. 5 is a schematic perspective view of another implement including a snow blower having an auger housing that provides improved visibility for an operator of the power machine, according to an alternative embodiment.

FIG. 6 is a schematic perspective view of a bucket implement including a housing that provides improved visibility for an operator of the power machine, according to another exemplary embodiment.

7-1-7-3 are schematic illustrations of exemplary aperture shapes and orientations in accordance with the disclosed embodiments.

Detailed Description

The concepts disclosed in the present discussion are described and illustrated with reference to exemplary embodiments. However, these concepts are not limited in their application to the details of construction and the arrangement of components in the illustrative embodiments, and can be practiced or carried out in various other ways. The terminology in this document is used for descriptive purposes and should not be regarded as limiting. The use of words such as "including," "comprising," "having," and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

The disclosed concepts are used to increase the visibility of an area in front of the housing of an implement, such as in front of the auger housing of a snow blower implement or in front of a bucket implement, to reduce contact with obstacles, structures, or other materials that may damage the snow blower and/or the structures or materials that are contacted. According to the disclosed concept, one or more holes are formed in the top wall of the auger housing in a pattern that enhances the visibility of the area in front of the auger housing. Power machine 10 includes an operator station that includes an operating position from which an operator may control operation of the power machine. In some power machines, the operator station 150 is defined by an enclosed or partially enclosed cab, although this need not be the case in all embodiments. The implement work space includes an area in front of or even within the housing or frame of the implement where the implement engages material (such as snow or earth) to perform a work function (such as digging, loading or collecting snow into an auger). The disclosed embodiments include at least one aperture formed in the housing of the implement's tool, and in some embodiments, multiple sets of apertures formed in the housing of the implement's tool, to provide visibility of the implement working space through the apertures for an operator of the power machine located in the operator station.

The disclosed concepts may be practiced on a variety of implements and on a variety of power machines as will be described hereinafter. Prior to disclosing any embodiments, representative implements 100, 100 ', 100 "upon which embodiments may be practiced and representative power machines 10 and 10' to which the implements may be operably coupled are illustrated in diagrammatic form in fig. 1-3 and described below. For the sake of brevity, only one implement and power machine combination is discussed in detail. However, as mentioned above, the embodiments below may be practiced on any of a variety of implements, and these various implements may be operatively coupled to a variety of different power machines. For purposes of the present discussion, a power machine includes a frame, at least one work element (in some cases), and a power source configured to provide power to the work element to accomplish a work task. One type of power machine is a self-propelled work vehicle. Self-propelled work vehicles are a class of power machines that include a frame, a work element, and a power source capable of providing power to the work element. At least one of the work elements is a launch system for moving the power machine under power.

Referring now to fig. 1, a block diagram illustrates the basic system of a power machine 10 interacting with an implement 100 and the basic features of the implement 100, which represent an implement into which the embodiments discussed below may be advantageously incorporated. With respect to their most basic units, for purposes of this discussion, a power machine includes a frame 20, a power source 25, a work element 30, and an implement interface 40 (as shown in fig. 1). On power machines (such as loaders and excavators and other similar work vehicles), implement interface 40 includes an implement carrier 50 and a power port 60. The implement carrier 50 is typically rotatably attached to a lift arm or another work element, and can be fixed to the implement. The power port 60 is provided for connection to the implement 100 to provide power from the power source to the implement. Power source 25 represents one or more sources of power generated on power machine 10. The power source 25 may include one or both of pressurized fluid and electricity.

The implement 100 (which is sometimes recognized as an attachment or attachable implement) has a power machine interface 110 and a tool 120 coupled to the power machine interface 110. The power machine interface 110 illustratively includes a power port 114 and a machine mount 112 for coupling with the power machine 10. Machine mount 112 may be any structure that can be coupled to implement interface 40 of power machine 10. In some embodiments, the power port 114 includes a hydraulic coupling and/or an electrical coupling. The power port 114 may also include a wireless radio connection, as may be appropriate for a given implement. While both a machine mount 112 and a power port 114 are shown, some implements may have only one or the other of the machine mount 112 and the power port 114 as part of their power machine interface 110. Other implements, such as a bucket or some simple forklift, will not have a power port 114 at all (see, e.g., fig. 3). Some other forklifts may have actuators that adjust the tines of the forklift vertically, horizontally, rotationally, or by extending the tines in response to a power signal received from the power machine 10 at the power port 114.

In the example of a power machine having a particular implement carrier, the machine mount 112 would include a structure complementary to the particular implement carrier. For power machines without an implement carrier, the machine mount includes features to mount the implement 100 directly to the power machine 10, such as bushings for receiving pins to mount the implement to a lift arm, and actuators for moving the implement.

For purposes of this discussion, implements may be categorized as simple or complex. Simple implements have no driven working elements. An example of a simple implement is a bucket or forklift without drivable tines. Complex implements have at least one drivable working element, such as a forklift, having drivable tines. Complex implements are also divided into complex implements having one drivable working element and complex implements having multiple working devices. Some complex implements include features of simple implements.

In fig. 1, the implement 100 illustrates a tool 120 for a complex implement having a single work element 124. The tool 120 includes a frame 122, the frame 122 being coupled to the machine mount 112 or being integral to the machine mount 112. The working element 124 is coupled to the frame 122 and is movable in some manner (vertical, horizontal, rotational, extended, etc.) relative to the frame. An actuator 126 is mounted to the frame 122 and the work element 124 and is drivable under power to move the work element relative to the frame. Power is provided by the actuator 126 via the power machine. Power is selectively provided in the form of pressurized hydraulic fluid (or other power source) directly from the power machine 10 to the actuators 126 via power ports 60 and 114.

Fig. 2 illustrates an implement 100 ', the implement 100' depicting a complex multi-function implement. Features in fig. 2 that are similarly numbered as those in fig. 1 are substantially similar and, for the sake of brevity, will not be discussed here. The implement 100' has one or more additional work devices 124", the additional work devices 124" being shown in block form. Each work element 124 "has a respective actuator 126", the respective actuator 126 "being coupled to the work element 124" to control movement of the work element 124 ". A control system 130 receives power from the power machine and selectively provides power to the actuators 126' and 126 "in response to signals from operator input devices. The control system 130 includes a controller 132, the controller 132 configured to receive electrical signals from the power machine 10 indicative of operator input device manipulation and to control power to various actuators based on those electrical signals. The controller 132 may provide electrical signals to some or all of the actuators 126' and 126 "to control their functions. Alternatively, the controller 132 may control an optional valve 134 to control actuation of some or all of the actuators 126' and 126 "by providing pressurized hydraulic fluid to the actuators.

Although not shown in fig. 2, in some instances, the controller 132 may receive signals indicative of operator actuation of user input devices mounted on the implement rather than the power machine. In these applications, the implement is controlled from an operator location that is remote from the power machine (i.e., beside the implement 100').

Fig. 3 illustrates an implement 100 ", the implement 100" depicting a simple implement. Features in fig. 3 that are similarly numbered as those in fig. 1 are substantially similar and, for the sake of brevity, will not be discussed here. The implement 100 "has one or more engagement structures 126", the engagement structures 126 "being fixedly or movably attached to the frame 122". Unlike a work element driven by an actuator to move relative to the frame to perform a work function, the engagement structure may engage with an intermediary to perform work in conjunction with the power machine. For example, a simple bucket has an engagement structure that includes a cutting edge and a defined volume that holds soil or material that is collected in the bucket. As another example, the tines of a forklift may be mounted to a frame of a forklift implement to engage with a pallet. Such tines may be adjustable, but in many cases they are not themselves movable under the power used to perform the work, but rather act as engagement structures for engaging and supporting the load to be lifted or carried.

The power machine interface may include a machine mount in the form of a generally planar interface plate that is coupleable to an implement carrier on the loader. In embodiments, various types of machine mounts may be employed. The power machine interface may also include a power port (e.g., see interfaces 110 and 110 'in fig. 1 and 2, respectively), or no power port (such as power machine interface 110' in fig. 3). When the power machine interface includes a power port, the power port may include a hydraulic conduit connectable to a conduit on a power machine such that pressurized hydraulic fluid may be selectively provided to actuators on the implement to drive the connected work element. The power port may also include electrical connections that can be connectable to actuators on a controller (such as controller 132 of fig. 2) and a valve (such as valve 134). The controllers and valves may be included in a control system on the implement, such as control system 130, to control functions thereon.

Referring now to fig. 4, an implement 200 is shown, the implement 200 may be in accordance with the implement illustrated in fig. 1-3 and including features of the implement illustrated in fig. 1-3. In the illustrated embodiment, the implement 200 is a snow blower implement configured to be attached to a power machine 10 (such as a loader). Implement 200 includes a power machine interface 210 having a machine mount 212, which machine mount 212 may be any structure configured to couple to an implement interface of a power machine (e.g., implement interface 40 discussed above). A power port (such as port 114 discussed above) may be included on the power machine interface 210 and may include a hydraulic coupling and/or an electrical coupling. Although implement 200 includes a power port in the exemplary embodiment, the power port is omitted from fig. 4 to simplify the illustration of other features.

In the exemplary embodiment, tool 220 of snow blower 200 is a rotary snow blowing tool. The tool 220 includes a frame or auger housing 222, which frame or auger housing 222 is attached to the machine mount 212 by a rear frame support 230. The auger housing 222 includes spaced apart side plates 240 and 242 on the outside of the implement 200. The housing 222 also includes a top wall 246 and a rear wall 244 extending angularly between the side plates 240, 242. A bottom plate, generally indicated as 248, also extends between the side plates 240 and 242 and functions to scrape or scoop snow into the shell. The top wall 246 has ridges 250 at its upper and front edges.

The implement 200 includes an auger or rotor at a forward end thereof, generally designated 252 but not specifically illustrated in fig. 4. The screw conveyor is installed between the side plates 240 and 242. The screw conveyor is rotated by using a hydraulic or other motor (such as the actuator 126 or 126' shown in fig. 1-2), which is not illustrated in fig. 4. A separate motor (such as the actuator 126 or 126' shown in fig. 1-2 but not in fig. 4) drives the impeller or rotor 254. The impeller 254 is a conventional rotating fan-type wheel unit that will receive the snow from the auger 252 and will drive the snow up through the discharge chute opening 260 and into the discharge chute. The discharge chute is omitted from fig. 4 to better illustrate the features of the disclosed embodiments as discussed below.

To enable an operator of the power machine to view material, structures, or obstructions approaching or entering the auger housing 222, the implement 200 includes one or more apertures, or sets of apertures 262 and 264, formed in a segment extending laterally between endpoints, such as the side plate 240 and the side plate 242. The one or more apertures may be formed in, for example, the rear wall 244 or the top wall 246 in a pattern or arrangement that provides visibility through the top wall 246 while minimizing the likelihood that snow, stones or other material may pass through the apertures. Although the apertures are formed in the top wall 246, in some embodiments, the apertures may be formed into the rear wall, or into both the rear wall and the top wall. In some embodiments, various auger housing shapes may require such a hole configuration. In the illustrated example embodiment, the apertures 262 and 264 are two series of diagonal slots or two sets of diagonal slots, with each series being formed on a different side of the top wall. In the illustrated embodiment, the diagonal slots in each set are formed parallel to one another, but this need not be the case in all embodiments. The orientation, number, size and spacing of the apertures are selected to provide visibility through portions of the top wall while minimizing the likelihood of material passing through the apertures. In some exemplary embodiments, the slots or other holes are laser cut into the top wall 246, but in other embodiments they may be formed using any suitable technique. Although a series of slots are shown, the exact number of slots or holes may vary in different embodiments. For example, in some embodiments, a single slot may be formed to define one (or both) of sets 262 and 264. Alternatively, in some embodiments, the snow blower may have only one set of holes. Additionally, while diagonally oriented parallel slots are shown as an exemplary embodiment, in other embodiments, other shapes and patterns may be used. For example, the sets of apertures 262 and 264 may alternatively be one or more circular or other shaped apertures that allow visibility while minimizing material passing through the apertures. The size, shape or orientation of the pores in a set need not be uniform.

Referring now to fig. 5, an implement 300 is shown, the implement 300 may be in accordance with the implement illustrated in fig. 1-4, and includes features of the implement illustrated in fig. 1-4. In the illustrated embodiment, the implement 300 is a snow blower implement similar to the snow blower implement 200 and similarly configured to be attached to the power machine 10 (such as a loader). Implement 300 includes a power machine interface 310 having a machine mount 312, which machine mount 312 may be any structure configured to be coupled to an implement interface of a power machine (e.g., implement interface 40 discussed above). A power port, such as port 114 discussed above, may be included on power machine interface 310 and may include a hydraulic coupling and/or an electrical coupling. Although implement 300 includes a power port in the exemplary embodiment, the power port is omitted from fig. 5 to simplify the illustration of other features.

In the exemplary embodiment, tool 320 of snow blower implement 300 is a rotary snow blowing tool. The tool 320 includes a frame or auger housing 322, which frame or auger housing 322 is attached to the machine mount 312 by a rear frame support 330. The auger housing 322 includes spaced apart side plates 340 and 342 on the outside of the implement 300. Housing 322 also includes a rear wall 344 extending between side plates 340 and 342. Instead of including the top wall in the case of implement 200 discussed above, rear wall 344 of implement 300 is bent forward near the top of the housing. A bottom plate, generally indicated as 348, also extends between the side plates 340 and 242 and functions to scrape or scoop snow into the shell.

The implement 300 includes an actuator in the form of a screw conveyor or rotor, generally indicated at 352. The screw conveyor is installed between the side plates 340 and 342. The screw conveyor is rotated by using a hydraulic or other motor (such as the actuator 126 or 126' shown in fig. 1-2), which is not illustrated in fig. 5. A separate motor (such as the actuator 126 or 126' shown in fig. 1-2 but not in fig. 5) drives another actuator in the form of an impeller or rotor 354. The impeller 354 is a conventional rotating fan-type wheel unit that will receive the snow from the auger 352 and will drive the snow up through the discharge chute opening 360 and into the discharge chute.

In order to make the implement working space of the auger housing 322 visible to an operator of the power machine, the implement 300 includes one or more apertures, or sets of apertures 362 and 364, formed in a segment extending laterally between endpoints, such as side plate 340 and side plate 342. The one or more holes may be formed, for example, in the rear wall 344 in a pattern or arrangement that provides visibility through the rear wall while minimizing the likelihood that snow, stone, or other material may pass through the holes. In the illustrated example embodiment, the apertures 362 and 364 are two series of diagonal slots or two sets of diagonal slots, with each series being formed on a different side of the top wall. In the illustrated embodiment, the diagonal slots in each set are formed parallel to one another, but this need not be the case in all embodiments. The orientation, number, size and spacing of the apertures are selected to provide visibility through portions of the rear wall while minimizing the likelihood of material passing through the apertures. In some exemplary embodiments, the slots or other holes are laser cut into the top wall 346, but in other embodiments they may be formed using any suitable technique.

Referring now to fig. 6, an implement 400 in the form of a bucket is shown. This and other types of buckets and other implements may include apertures to provide visibility into the implement working space according to an exemplary embodiment. As shown in fig. 6, implement 400 has a frame 422 forming a housing, and includes side plates or walls 440 and 442, with laterally extending segments in the form of rear walls 444 extending between the side plates. The top wall 446 forms another laterally extending segment between the side plates 440 and 442. A bottom panel 448 also extends between side panels 440 and 442. Multiple sets of apertures 462, 464, and 466 are formed in the rear wall 444 or laterally extending segments to provide visibility to an operator located in the operator station of the implement working space forward of the rear wall 444. In this example embodiment, apertures 462 and 464 are positioned at left and right portions of rear wall 444, outside of machine mount 412 of power machine interface 410, and adjacent to the respective side plates. The aperture 466 is positioned in a middle or central region of the rear wall 444. In this embodiment, an aperture 468 is also formed in the top wall 446 to further provide visibility of the implement working space through the top wall. Although the groups of apertures shown in fig. 6 are diagonally extending slots, the shape and exact number of apertures may vary in different embodiments.

Additionally, while diagonally oriented slot-like apertures are shown as an exemplary embodiment, in other embodiments, other shapes and patterns may be used. For example, in each implement, one or more holes 562-1 in the form of an oval may be used as shown in FIG. 7-1. In another embodiment as shown in fig. 7-2, one or more vertically oriented rectangular holes 562-2 may be used. In yet another embodiment, one or more horizontally oriented rectangular holes 562-3 as shown in fig. 7-3 may be used. Other shaped apertures, such as circular shaped apertures, may also be used. The shape, number, orientation, grouping pattern, and other features of the apertures may be selected as desired to achieve visibility into the tool working space. The size, shape or orientation of the pores in a set need not be uniform.

Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention.