Building drain pipe anti-theft device

文档序号:1610437 发布日期:2020-01-10 浏览:20次 中文

阅读说明:本技术 一种建筑排水管防盗装置 (Building drain pipe anti-theft device ) 是由 林玉平 于 2019-10-10 设计创作,主要内容包括:本发明提供了一种建筑排水管防盗装置,属于排水管相关部件领域。它解决了现有排水管防盗装置操作麻烦的问题。本建筑排水管防盗装置包括防爬板和防盗板,防爬板外侧面具有出刺孔,防盗板外侧面具有防盗刺,防盗板两侧边各设有调节机构,调节机构包括方管调节管和穿在调节管内的调节杆,调节管前侧管壁与防爬板后侧面固定,还包括固定在防盗板一侧的调节板,调节管内侧管壁设有若干滑孔,调节杆内侧杆壁上设有若干沿调节杆长度方向分布的滑槽,调节板外侧面上固定有滑杆,滑杆滑动穿入滑孔,且滑杆端部形成滑动位于滑槽上的滑块,且调节板活动贴在调节管外壁上,还包括拉杆,拉杆两端分别与两组调节机构的两根调节杆顶端连接。本防盗装置方便操作。(The invention provides an anti-theft device for a building drain pipe, and belongs to the field of related parts of the drain pipe. It has solved the problem of current drain pipe anti-theft device troublesome poeration. This building drain pipe anti-theft device includes anti-creep plate and anti-creep plate, anti-creep plate lateral surface has out the thorn hole, the anti-creep plate lateral surface has the theftproof thorn, anti-creep plate both sides limit respectively is equipped with adjustment mechanism, adjustment mechanism includes side pipe control tube and wears the regulation pole in the control tube, the control tube front side pipe wall is fixed with anti-creep plate trailing flank, still including fixing the regulating plate in anti-creep plate one side, the inboard pipe wall of control tube is equipped with a plurality of slide openings, be equipped with a plurality of spouts that distribute along adjusting pole length direction on the inboard pole wall of regulation pole, be fixed with the slide bar on the regulating plate lateral surface, the slide bar slides and penetrates the slide opening, and the slide bar tip forms the slider that slides and is located the spout, and the regulating plate activity pastes on the regulating tube outer wall, still include the. The anti-theft device is convenient to operate.)

1. The utility model provides a building drain pipe anti-theft device, its is used for preventing burglary to installing PVC drain pipe (1) on the outer wall, PVC drain pipe (1) for pipe form and vertical setting, anti-theft device including be rectangular plate-like anti-creep board (2) and anti-creep board (3), anti-creep board (2) lateral surface has a plurality of thorn holes (21) for smooth surface and anti-creep board (2) are gone up, anti-creep board (3) lateral surface has a plurality of theftproof stings (31), anti-creep board (2) are connected with connecting plate (23) of interior cambered surface cladding at drain pipe (1) outer wall on one side, and anti-creep board (2) and connecting plate (23) opposite one side respectively with the external wall stationary, its characterized in that: the anti-theft board (3) left and right sides limit respectively be equipped with a set of adjustment mechanism, a set of adjustment mechanism includes square tubular structure's control tube (4) and cooperation and wears to establish regulation pole (5) of rectangular shape platelike structure in control tube (4), control tube (4) length direction be vertical setting, and control tube (4) front side pipe wall is fixed with anti-creep board (2) trailing flank, adjustment mechanism still including fixing in bar platelike regulating plate (32) on anti-theft board (3) one side, two regulating plate (32) opposite lateral surfaces of two sets of adjustment mechanism activity respectively paste on two regulating tube (4) relative inboard pipe walls of two sets of adjustment mechanism, and regulating plate (32) width direction is perpendicular with anti-creep board (2) trailing flank, regulating tube (4) inboard pipe wall be equipped with a plurality of in-line slide opening (41) along regulating tube (4) length direction distribution, slide opening (41) length direction is perpendicular with regulating pipe (4) length direction, adjusts the inboard pole wall of pole (5) and towards the inboard pipe wall of regulating pipe (4), and is equipped with a plurality of spout (51) that distribute along adjusting pole (5) length direction on the inboard pole wall of pole (5), spout (51) have by last upper and lower three-section that links up in proper order under to, upper segment spout (51) length direction and hypomere spout (51) length direction all are parallel with adjusting pole (5) length direction, middle segment spout (51) length direction is acute angle contained angle setting with adjusting pole (5) length direction, and middle segment spout (51) both ends are obtuse angle contained angle setting with upper segment spout (51) and hypomere spout (51) respectively, upper segment spout (51) and anti-creep board (2) trailing flank distance and slide opening (41) front end and anti-creep board (2) trailing flank distance the same, lower segment spout (51) and anti-creep board (2) trailing flank distance and slide opening (41) trailing end and anti-creep board (2) trailing edge distance are the same ) The distance between the back side surfaces is the same, a plurality of sliding rods (33) are fixed on the outer side surface of the adjusting plate (32), the sliding rods (33) sequentially penetrate through a plurality of sliding holes (41) in a sliding mode, sliding blocks which are located on sliding grooves (51) in a sliding mode are formed at the end portions of the sliding rods (33), the adjusting plate further comprises pull rods (6), and the two ends of each pull rod (6) are respectively connected with the top ends of two adjusting rods (5) of two groups of adjusting mechanisms;

the pull rod (6) can be moved upwards to enable the slide block to move to the bottom end of the slide groove (51), the slide rod (33) moves to the rear end of the slide hole (41), the anti-theft plate (3) and the anti-climbing plate (2) are arranged at intervals, and the front end of the anti-theft thorn (31) is positioned in the thorn outlet hole (21); and the pull rod (6) can be moved downwards to enable the slide block to move to the top end of the slide groove (51), the slide rod (33) moves to the front end of the slide hole (41), the anti-theft plate (3) and the anti-climbing plate (2) are attached to each other at the moment, and the front end of the anti-theft thorn (31) penetrates out of the thorn outlet hole (21).

2. The anti-theft device for construction drain pipes according to claim 1, wherein: spout (51) top and bottom deepen and be equipped with constant head tank (52), slide bar (33) tip be equipped with the spring groove, the spring groove is embedded to have spherical locating piece (35), still including being located the spring groove, and reset spring (34) that both ends offset with locating piece (35) and spring groove tank bottom respectively, and when the slider removed spout (51) top or bottom, reset spring (34) can promote locating piece (35) and inlay in constant head tank (52).

3. The anti-theft device for construction drain pipes according to claim 1, wherein: the adjusting plate (32) is provided with a connecting hole, and the sliding rod (33) is a connecting bolt with the rear end screwed in the connecting hole.

4. The anti-theft device for construction drain pipes according to claim 1, wherein: pull rod (6) on be equipped with lockhole (61), anti-creep plate (2) trailing flank of pull rod (6) top and below respectively be fixed with a U-shaped lock ear (22), lock ear (22) along vertical setting, and shift up pull rod (6) or move down pull rod (6) and target in place the back, lock ear (22) pass lockhole (61) to can be fixed through the padlock.

5. The anti-theft device for construction drain pipes according to claim 1, wherein: the rear side face of the anti-creeping plate (2) is fixed with a protective cover (7) covering the outer sides of the adjusting device and the anti-theft plate (3), and the protective cover (7) is respectively fixed with the outer side pipe wall of the adjusting pipe (4) and the rear side pipe wall in an attaching mode.

6. The anti-theft device for construction drain pipes according to claim 1, wherein: the adjusting plate (32) is formed by integrally bending the anti-theft plate (3), and the anti-theft thorn (31) is formed by cutting and integrally bending the anti-theft plate (3).

7. The anti-theft device for construction drain pipes according to claim 1, wherein: the two adjacent sliding grooves (51) are partially overlapped in the length direction of the adjusting rod (5).

8. The anti-theft device for construction drain pipes according to claim 1, wherein: the outer side surface of the anti-creep plate (2) is coated with a smooth coating.

Technical Field

The invention belongs to the technical field of related parts of a drainage pipe, and relates to an anti-theft device for a building drainage pipe.

Background

Have the pipe form PVC drain pipe of vertical setting usually on the outer wall, the thief easily scrambles along the PVC drain pipe, in order to guard against theft, installs the theftproof board in the drain pipe outside usually, is equipped with the theftproof thorn on the theftproof board, but the theftproof thorn can lead to the fact the influence to outer wall construction and maintenance.

The prior Chinese patent with the application number of 201811010475.3 and the name of 'a PVC drain pipe anti-theft structure' is characterized in that an adjustable anti-theft plate is arranged on the inner side of an anti-theft plate, and the anti-theft plate is moved to control whether an anti-theft thorn extends out of the anti-theft plate, so that the anti-theft structure has an anti-theft function and can avoid influence on construction. However, it has the following problems:

1. the device has three states, namely, loosening the pulling plate, pulling the pulling plate and transversely moving the pulling plate after pulling the pulling plate, but a user generally only uses the former two states, but the anti-theft effect is better in the third state;

2. the number of the sliding rods is limited, and all parts of the anti-theft plate cannot be effectively reinforced;

3. the anti-theft thorn needs to transversely move in the anti-climbing hole, so that the anti-climbing hole is large in hole opening, and thieves can easily climb by using the anti-climbing hole;

4. the padlock is used for fixing, the operation is troublesome in most cases, and the key is easy to lose.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an anti-theft device for a building drain pipe, which can improve the anti-theft effect and is more convenient to operate.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a building drain pipe anti-theft device, its is used for theftproof to installing the PVC drain pipe on the outer wall, the PVC drain pipe be pipe form and vertical setting, anti-theft device including be rectangular plate-like anti-creep board and anti-theft plate, anti-creep board lateral surface has a plurality of thorn holes for smooth surface and anti-creep board are gone up, the anti-creep board lateral surface has a plurality of theftproof spines, anti-creep board is connected with the connecting plate of interior cambered surface cladding at the drain pipe outer wall on one side, and anti-creep board and connecting plate opposite one side respectively with the outer wall mounting, its characterized in that: the left side and the right side of the anti-theft plate are respectively provided with a group of adjusting mechanisms, each group of adjusting mechanisms comprises an adjusting pipe with a square pipe structure and an adjusting rod with a strip-shaped plate structure, the adjusting pipes are arranged vertically, the front side pipe walls of the adjusting pipes are fixed with the rear side faces of the anti-climbing plate, the adjusting mechanisms further comprise strip-shaped plate adjusting plates fixed on one side of the anti-theft plate, the opposite outer side faces of the two adjusting plates of the two groups of adjusting mechanisms are movably attached to the opposite inner side pipe walls of the two adjusting pipes of the two groups of adjusting mechanisms respectively, the width direction of each adjusting plate is perpendicular to the rear side faces of the anti-climbing plate, the inner side pipe walls of the adjusting pipes are provided with a plurality of linear slide holes distributed along the length direction of the adjusting pipes, the length direction of the slide holes is perpendicular to the length direction of the adjusting pipes, the inner side pipe walls of the adjusting rods face the, the sliding groove is provided with an upper section, a middle section and a lower section which are sequentially connected from top to bottom, the length direction of the upper section sliding groove and the length direction of the lower section sliding groove are both parallel to the length direction of the adjusting rod, the length direction of the middle section sliding groove and the length direction of the adjusting rod form an acute included angle, two ends of the middle section sliding groove and the upper section sliding groove and the lower section sliding groove respectively form an obtuse included angle, the distance between the rear side surface of the upper section sliding groove and the rear side surface of the anti-climbing plate is the same as that between the front end of the sliding hole and the rear side surface of the anti-climbing plate, the distance between the rear side surface of the lower section sliding groove and the rear side surface of the sliding hole is the same as that between the rear end of the sliding hole and the rear side surface of the anti-climbing plate, a plurality of sliding rods are fixed on the;

the pull rod can be moved upwards to enable the slide block to move to the bottom end of the slide groove, the slide rod moves to the rear end of the slide hole, the anti-theft plate and the anti-climbing plate are arranged at intervals, and the front end of the anti-theft thorn is located in the thorn outlet hole; and the pull rod can be moved downwards to enable the sliding block to move to the top end of the sliding groove, the sliding rod moves to the front end of the sliding hole, the anti-theft plate and the anti-climbing plate are mutually attached at the moment, and the front end of the anti-theft thorn penetrates out of the thorn outlet hole.

After the pull rod is moved upwards, the anti-theft plate and the anti-climbing plate can be arranged at intervals, the front end of the anti-theft thorn is positioned in the thorn outlet hole so as to avoid influencing the construction of the outer wall, and after the pull rod is moved downwards, the anti-theft plate and the anti-climbing plate can be attached to each other, and the front end of the anti-theft thorn penetrates out of the thorn outlet hole so as to prevent theft by using the anti-theft thorn, so that the operation is more convenient; after the pull rod is moved upwards or downwards in place, the sliding block is positioned on a section of sliding groove parallel to the adjusting rod, and the anti-theft plate cannot be moved in the direction vertical to the anti-theft plate unless the pull rod is actively moved, so that the stability of the anti-theft plate can be improved, the anti-theft plate is prevented from moving due to brute force extrusion of an anti-theft prick, and the optimal anti-theft effect can be achieved by adopting more convenient operation; the puncture outlet is matched with the anti-theft puncture exactly, so that the support climbing by using the overlarge puncture outlet can be avoided; and the pull rod is positioned at the top, so that a thief can be prevented from climbing from bottom to top, and the trouble caused by losing a key can be avoided relative to the fixing mode of the padlock.

In foretell building drain pipe anti-theft device, spout top and bottom deepen and be equipped with the constant head tank, the slide bar tip be equipped with the spring groove, the spring inslot is embedded to have a spherical locating piece, still including being located the spring inslot, and both ends respectively with the reset spring that locating piece and spring groove tank bottom offset, and when the slider removed spout top or bottom, reset spring can promote the locating piece to inlay in the constant head tank.

Therefore, the positioning block and the positioning groove can be matched to move in place quickly.

In the anti-theft device for the building drain pipe, the adjusting plate is provided with the connecting hole, and the sliding rod is a connecting bolt with the rear end screwed in the connecting hole.

Therefore, the manufacture and installation are convenient.

In foretell building drain pipe anti-theft device, the pull rod on be equipped with the lockhole, the anti-creep plate trailing flank of pull rod top and below respectively be fixed with a U-shaped lock ear, the lock ear sets up along vertical, and shifts up the pull rod or shift down the pull rod and put in place the back, the lock ear pass the lockhole to can fix through the padlock.

Therefore, the padlock can be used for further fixing, and the lock is suitable for occasions without adjusting the structure for a long time.

In the anti-theft device for the building drain pipe, the rear side face of the anti-creeping plate is fixedly provided with the protective cover covering the outer sides of the adjusting device and the anti-creeping plate, and the protective cover is respectively attached and fixed with the outer pipe wall of the adjusting pipe and the rear pipe wall.

The adjusting device is protected.

In the anti-theft device for the building drain pipe, the adjusting plate is formed by integrally bending the anti-theft plate, and the anti-theft thorn is formed by cutting and integrally bending the anti-theft plate.

Therefore, the structure is simple and stable.

In the above anti-theft device for the building drain pipe, the two adjacent sliding grooves are partially overlapped in the length direction of the adjusting rod.

Therefore, the densely arranged slide bars can further improve the stability of the anti-theft plate.

In the anti-theft device for the building drain pipe, the outer side surface of the anti-creeping plate is coated with a smooth coating.

Compared with the prior art, the invention has the following advantages:

1. after the pull rod is moved upwards, the anti-theft plate and the anti-climbing plate can be arranged at intervals, the front end of the anti-theft thorn is positioned in the thorn outlet hole so as to avoid influencing the construction of the outer wall, and after the pull rod is moved downwards, the anti-theft plate and the anti-climbing plate can be attached to each other, and the front end of the anti-theft thorn penetrates out of the thorn outlet hole so as to prevent theft by using the anti-theft thorn, so that the operation is more convenient;

2. after the pull rod is moved upwards or downwards in place, the sliding block is positioned on a section of sliding groove parallel to the adjusting rod, and the anti-theft plate cannot be moved in the direction vertical to the anti-theft plate unless the pull rod is actively moved, so that the stability of the anti-theft plate can be improved, the anti-theft plate is prevented from moving due to brute force extrusion of an anti-theft prick, and the optimal anti-theft effect can be achieved by adopting more convenient operation;

3. the puncture outlet is matched with the anti-theft puncture exactly, so that the support climbing by using the overlarge puncture outlet can be avoided;

4. and the pull rod is positioned at the top, so that a thief can be prevented from climbing from bottom to top, and the trouble caused by losing a key can be avoided relative to the fixing mode of the padlock.

Drawings

Fig. 1 is a front view of the anti-theft device.

Fig. 2 is a schematic top view of fig. 1.

Fig. 3 is a partially enlarged sectional view of fig. 2.

Fig. 4 is a partially enlarged view of fig. 3.

Fig. 5 is another state diagram for use of fig. 3.

Fig. 6 is a partially enlarged view of the adjustment lever.

Fig. 7 is a partial rear view of fig. 1.

In the figure, the position of the upper end of the main shaft,

1. a drain pipe;

2. an anti-creep plate; 21. a puncture hole is formed; 22. locking lugs; 23. a connecting plate;

3. an anti-theft plate; 31. theft-proof thorn; 32. an adjusting plate; 33. a slide bar; 34. a return spring; 35. positioning blocks;

4. an adjusting tube; 41. a slide hole;

5. adjusting a rod; 51. a chute; 52. positioning a groove;

6. a pull rod; 61. a lock hole;

7. a shield.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in figures 1-7, the invention relates to an anti-theft device for a building drain pipe, which is used for preventing theft of a PVC drain pipe 1 arranged on an outer wall, the PVC drain pipe 1 is in a circular tube shape and is vertically arranged, the anti-theft device comprises an anti-climbing plate 2 and an anti-theft plate 3 which are both in a rectangular plate shape, the outer side surface of the anti-climbing plate 2 is a smooth surface, a plurality of thorn holes 21 are arranged on the anti-climbing plate 2, the outer side surface of the anti-theft plate 3 is provided with a plurality of anti-theft thorns 31, one side of the anti-climbing plate 2 is connected with a connecting plate 23 with an inner arc surface covering the outer wall of the drain pipe 1, the opposite sides of the anti-climbing plate 2 and the connecting plate 23 are respectively fixed with the outer wall, the left side and the right side of the anti-theft plate 3 are respectively provided with a group of adjusting mechanisms, the group of adjusting mechanisms comprise an adjusting pipe 4 in a, the adjusting mechanism further comprises a strip-shaped plate-shaped adjusting plate 32 fixed on one side of the anti-theft plate 3, the opposite outer side surfaces of the two adjusting plates 32 of the two groups of adjusting mechanisms are respectively movably attached to the opposite inner side pipe walls of the two adjusting pipes 4 of the two groups of adjusting mechanisms, the width direction of the adjusting plate 32 is perpendicular to the rear side surface of the anti-climbing plate 2, the inner side pipe wall of each adjusting pipe 4 is provided with a plurality of linear sliding holes 41 distributed along the length direction of the adjusting pipe 4, the length direction of each sliding hole 41 is perpendicular to the length direction of the adjusting pipe 4, the inner side pipe wall of each adjusting rod 5 faces the inner side pipe wall of the corresponding adjusting pipe 4, the inner side pipe wall of each adjusting rod 5 is provided with a plurality of sliding grooves 51 distributed along the length direction of the corresponding adjusting rod 5, each sliding groove 51 is provided with an upper section, a middle section and a lower section which are sequentially connected from top, the two ends of the middle sliding groove 51 are respectively arranged at obtuse included angles with the upper sliding groove 51 and the lower sliding groove 51, the distance between the upper sliding groove 51 and the rear side face of the anti-climbing plate 2 is the same as the distance between the front end of the sliding hole 41 and the rear side face of the anti-climbing plate 2, the distance between the lower sliding groove 51 and the rear side face of the anti-climbing plate 2 is the same as the distance between the rear end of the sliding hole 41 and the rear side face of the anti-climbing plate 2, a plurality of sliding rods 33 are fixed on the outer side face of the adjusting plate 32, the plurality of sliding rods 33 sequentially penetrate the plurality of sliding holes 41 in a sliding mode, the end portions of the sliding rods 33 form sliding blocks located on the sliding grooves 51 in;

the pull rod 6 can be moved upwards to enable the slide block to move to the bottom end of the slide groove 51, the slide rod 33 moves to the rear end of the slide hole 41, the anti-theft plate 3 and the anti-climbing plate 2 are arranged at intervals, and the front end of the anti-theft thorn 31 is positioned in the thorn outlet hole 21; and the pull rod 6 can be moved downwards, so that the slide block moves to the top end of the slide groove 51, the slide rod 33 moves to the front end of the slide hole 41, the anti-theft plate 3 and the anti-climbing plate 2 are attached to each other at the moment, and the front end of the anti-theft thorn 31 penetrates out of the thorn outlet hole 21.

Furthermore, the top end and the bottom end of the sliding groove 51 are deepened with positioning grooves 52, the end of the sliding rod 33 is provided with a spring groove, a spherical positioning block 35 is embedded in the spring groove, the sliding device further comprises a return spring 34 which is positioned in the spring groove and two ends of which respectively abut against the positioning block 35 and the bottom end of the spring groove, and when the sliding block moves to the top end or the bottom end of the sliding groove 51, the return spring 34 can push the positioning block 35 to be embedded in the positioning groove 52. The adjusting plate 32 is provided with a connecting hole, and the sliding rod 33 is a connecting bolt with the rear end screwed in the connecting hole. The pull rod 6 is provided with a lock hole 61, the rear side surfaces of the anti-climbing plates 2 above and below the pull rod 6 are respectively fixed with a U-shaped lock lug 22, the lock lugs 22 are vertically arranged, and after the pull rod 6 is moved upwards or downwards in place, the lock lugs 22 penetrate through the lock hole 61 and can be fixed through a padlock. The rear side face of the anti-creeping plate 2 is fixedly provided with a protective cover 7 covering the outer sides of the adjusting device and the anti-theft plate 3, and the protective cover 7 is respectively attached and fixed with the outer side pipe wall and the rear side pipe wall of the adjusting pipe 4. The adjusting plate 32 is formed by integrally bending the anti-theft plate 3, and the anti-theft thorn 31 is formed by cutting and integrally bending the anti-theft plate 3. The two adjacent sliding grooves 51 are partially overlapped in the length direction of the adjusting rod 5. The outer side surface of the anti-creep plate 2 is coated with a smooth coating.

After the pull rod 6 is moved upwards, the anti-theft plate 3 and the anti-climbing plate 2 can be arranged at intervals, the front end of the anti-theft thorn 31 is positioned in the thorn outlet hole 21, so that the influence on the construction of an outer wall is avoided, after the pull rod 6 is moved downwards, the anti-theft plate 3 and the anti-climbing plate 2 can be tightly attached to each other, and the front end of the anti-theft thorn 31 penetrates out of the thorn outlet hole 21, so that the anti-theft thorn 31 is used for preventing theft, and the operation is more convenient; after the pull rod 6 is moved upwards or downwards in place, the sliding block is positioned on a section of sliding groove 51 parallel to the adjusting rod 5, and the anti-theft plate 3 cannot be moved in the direction vertical to the anti-theft plate 3 unless the pull rod 6 is actively moved, so that the stability of the anti-theft plate 3 can be improved, the anti-theft plate 3 is prevented from moving due to the fact that the anti-theft pricks 31 are brute-force extruded, and the best anti-theft effect can be achieved by adopting more convenient operation; the puncture outlet 21 is matched with the anti-theft puncture 31 exactly, so that the support climbing by using the overlarge puncture outlet 21 can be avoided; and the pull rod 6 is positioned at the top, so that a thief can be prevented from climbing from bottom to top, and the trouble caused by losing a key can be avoided relative to the fixing mode of the padlock.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms of the drainage pipe 1, the anti-climbing plate 2, the puncture hole 21, the locking lug 22, the connecting plate 23, the anti-theft plate 3, the anti-theft puncture 31, the adjusting plate 32, the sliding rod 33, the return spring 34, the positioning block 35, the adjusting pipe 4, the sliding hole 41, the adjusting rod 5, the sliding groove 51, the positioning groove 52, the pull rod 6, the locking hole 61, the protective cover 7, and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

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