阅读说明：本技术 一种护理用品废料收集装置 (Nursing articles for use garbage collection device ) 是由 邱志磊 于 2020-11-30 设计创作，主要内容包括：本发明公开了一种护理用品废料收集装置,包括外壳和滑块,所述外壳的底部四角安装有万向轮,所述外壳的两侧内部开设有放置槽,其中,所述外壳的中部固定有隔板将放置槽隔开,所述放置槽的内部放置有废料桶,所述放置槽靠近废料桶的底部固定有减震座,所述废料桶的顶部开设有卡槽,所述卡槽的内部设置有卡套,所述外壳与隔板靠近废料桶的一侧开设有滑槽,所述滑块位于废料桶靠近滑槽的一侧,所述外壳靠近放置槽的开口处转动连接有顶盖。该护理用品废料收集装置,设置有废料桶,护理废物使用完成后,根据护理废物的种类对护理废物进行分类处理,通过两侧设置的2个废料桶对护理废物分开进行收集,使部分护理废物能够再次利用。(The invention discloses a nursing article waste collection device which comprises a shell and a sliding block, wherein universal wheels are installed at four corners of the bottom of the shell, placing grooves are formed in two sides of the shell, a partition plate is fixed in the middle of the shell and used for separating the placing grooves, a waste barrel is placed in the placing grooves, a shock absorption seat is fixed at the position, close to the bottom of the waste barrel, of the placing grooves, a clamping groove is formed in the top of the waste barrel, a clamping sleeve is arranged in the clamping groove, a sliding groove is formed in one side, close to the waste barrel, of the shell and the partition plate, the sliding block is located at one side, close to the sliding groove, of the waste barrel, and a top cover is rotatably connected to an opening, close to. This nursing articles for use garbage collection device is provided with the waste bin, and nursing wastes material uses the completion back, carries out classification to the nursing wastes material according to the kind of nursing wastes material, separately collects the nursing wastes material through 2 waste bins that both sides set up, makes partial nursing wastes material reuse.)

1. A nursing article waste collection device comprises a shell (1) and a sliding block (10), and is characterized in that: universal wheels (2) are arranged at four corners of the bottom of the shell (1), placing grooves (3) are arranged inside two sides of the shell (1), wherein,

a partition plate (4) is fixed in the middle of the shell (1) to separate the placing groove (3), a waste barrel (5) is placed in the placing groove (3), a shock absorption seat (6) is fixed at the bottom of the placing groove (3) close to the waste barrel (5), a clamping groove (7) is formed in the top of the waste barrel (5), a clamping sleeve (8) is arranged in the clamping groove (7), and a sliding groove (9) is formed in one side of the shell (1) and one side of the partition plate (4) close to the waste barrel (5);

the sliding block (10) is positioned on one side, close to the sliding groove (9), of the waste material barrel (5), a top cover (11) is rotatably connected to an opening of the shell (1), close to the placing groove (3), a feeding hole (12) penetrates through the middle of the top cover (11), the bottom, close to the feeding hole (12), of the top cover (11) is rotatably connected with a feeding hole cover (13), a connecting frame (14) is fixed on one side of the feeding hole cover (13), and a heavy block (15) is fixed on the top of one side, far away from the feeding hole cover (13), of the connecting frame (14);

keep away from with shell (1) rotation department both sides run through and have opening (16) top cap (11), stop lever groove (17) have been seted up at top that top cap (11) are close to opening (16), shell (1) is close to one side rotation of opening (16) and is connected with dwang (18), one side that shell (1) was kept away from in dwang (18) is fixed with pin (19).

2. The waste collection device for nursing products of claim 1, wherein: shock mount (6) are including fixing base (601), first connecting groove (602), head rod (603), supporting seat (604), first spring (605) and cushion (606), shock mount (6) are through fixing base (601) and shell (1) fixed connection, first connecting groove (602) have been seted up to one side that shock mount (6) are close to waste bin (5), the internal connection of first connecting groove (602) has head rod (603), one side that fixing base (601) were kept away from in head rod (603) is fixed with supporting seat (604), the cover has first spring (605) on head rod (603) between supporting seat (604) to fixing base (601), one side that head rod (603) were kept away from in supporting seat (604) is fixed with cushion (606).

3. The waste collection device for nursing products of claim 2, wherein: the supporting seat (604) and the fixed seat (601) form an elastic structure through a first spring (605).

4. The waste collection device for nursing products of claim 1, wherein: the inner size of the sliding groove (9) is matched with the outer size of the sliding block (10), and the sliding groove (9) and the sliding block (10) form a sliding structure.

5. The waste collection device for nursing products of claim 1, wherein: feed inlet lid (13) and the axis coincidence of feed inlet (12) mutually, and the external diameter of feed inlet lid (13) is greater than the internal diameter of feed inlet (12).

6. The waste collection device for nursing products of claim 1, wherein: the inner size of the opening (16) is matched with the outer size of the stop lever (19), the length of the stop lever (19) is larger than the width of the opening (16), and the opening (16) is perpendicular to the stop lever groove (17).

7. The waste collection device for nursing products of claim 1, wherein: the inner size of the stop lever groove (17) is matched with the outer size of the stop lever (19), and the stop lever groove (17) and the stop lever (19) form a clamping structure.

8. The waste collection device for nursing products of claim 1, wherein: the rotating rod (18) comprises a second connecting rod (1801), a spring groove (1802), a second connecting groove (1803), a third connecting rod (1804), a baffle plate (1805), a second spring (1806) and a fourth connecting rod (1807), the rotating rod (18) is rotatably connected with the shell (1) through a second connecting rod (1801), a spring groove (1802) is formed in one side, far away from the shell (1), of the second connecting rod (1801), a second connecting groove (1803) is arranged on one side of the second connecting rod (1801) far away from the shell (1), a third connecting rod (1804) is connected inside the second connecting groove (1803), a baffle plate (1805) is fixed at one end of the third connecting rod (1804) positioned in the spring slot (1802), a second spring (1806) is sleeved on a third connecting rod (1804) from the baffle plate (1805) to the second connecting groove (1803), and a fourth connecting rod (1807) is fixed on one side of the third connecting rod (1804) far away from the second connecting rod (1801).

9. A nursing article waste collection method is characterized in that: firstly, lifting the stop lever 19, the stop lever 19 drives the fourth connecting rod 1807 to move upwards, the fourth connecting rod 1807 drives the third connecting rod 1804 to move upwards, the second spring 1806 is compressed, after the stop lever 19 moves out of the inside of the stop lever groove 17, the stop lever 19 is rotated to coincide with the opening 16, the stop lever 19 is loosened to enable the stop lever 19 to enter the opening 16, then the top cover 11 is moved away, the placing groove 3 is opened, the clamping sleeve 8 is moved out, the waste bag is taken out, then a new waste bag is placed in the waste barrel 5, the edge of the waste bag crosses the clamping groove 7, the clamping sleeve 8 is clamped into the inside of the clamping groove 7, the edge of the waste bag is fixed through the clamping sleeve 8, then the top cover 11 is closed, when the top cover 11 covers the shell 1, the stop lever 19 enters the inside of the opening 16, the stop lever 19 is lifted to compress the second spring 1806, after the stop lever 19 completely moves out of the opening 16, the stop lever 19 is rotated to enable the stop lever 19 to rotate 90 degrees, after the stop lever 19 is overlapped with the stop lever groove 17, the stop lever 19 is loosened, the second spring 1806 pushes the stop lever 19 to move downwards, the stop lever 19 enters the stop lever groove 17 to fix the top cover 11, then the shell 1 is moved, the shell 1 is moved through the universal wheel 2, the waste barrel 5 is vibrated to move in the shell 1, the waste barrel 5 drives the sliding block 10 to move in the sliding groove 9, the sliding structure formed by the sliding groove 9 and the sliding block 10 is used for preventing the waste barrel 5 from shaking left and right to collide with the inner wall of the shell 1, the waste barrel 5 can only move up and down, when the waste barrel 5 is vibrated to move up and down, the elastic structure is formed through the first spring 605 by the supporting seat 604 and the fixing seat 601, the vibration received by the waste barrel 5 is reduced through elastic deformation, the noise generated by collision of the waste barrel 5 and the shell 1 is avoided, the shell 1 is moved to a designated place, after the nursing waste is used, the nursing waste is classified according to the type of the nursing waste, part of the nursing waste can be reused, the nursing waste is thrown into the feeding hole 12, the nursing waste is pressed on the feeding hole cover 13, the feeding hole cover 13 is balanced with the connecting frame 14 and the weight 15, when the mass of the feeding hole cover 13 is increased, the feeding hole cover 13 is rotated downwards, the feeding hole 12 is opened, meanwhile, the feeding hole cover 13 drives the connecting frame 14 and the weight 15 to rotate upwards, the nursing waste enters a waste bag of the waste barrel 5, and then after the feeding hole cover 13 is balanced again with the connecting frame 14 and the weight 15, the weight 15 moves downwards through self gravity to enable the feeding hole cover 13 to rotate upwards, the feeding hole 12 is blocked, and the smell of the nursing waste is prevented from being scattered out through the feeding hole 12.

Technical Field

The invention relates to the technical field of hospital nursing, in particular to a nursing article waste collection device.

Background

In the hospital, patient needs the hospital nurse to nurse patient through nursing materials in the treatment process, and nursing materials waste is collected through collection device to nursing materials article after the use.

Although the types and the number of the conventional nursing article waste collection devices are very large, the conventional nursing article waste collection devices still have certain problems and bring certain inconvenience to the nursing article waste collection devices.

When current nursing materials garbage collection device is using, because but have recycle's partial waste material in the nursing materials waste material, current garbage collection device can't separately collect nursing materials waste material to, current garbage collection device is when using, and the dog-house opens all the time, makes collection device scattered by the smell, perhaps only can throw the material after need opening the dog-house, inconvenient use.

Disclosure of Invention

The invention aims to provide a nursing article waste collection device, which solves the problems that when the conventional nursing article waste collection device provided by the background technology is used, the nursing article waste is partially recycled, the conventional waste collection device cannot separately collect the nursing article waste, and when the conventional waste collection device is used, a feeding port is always opened, so that the collection device is emitted by smell, or the feeding can be carried out after the feeding port is opened, and the use is inconvenient.

In order to achieve the purpose, the invention provides the following technical scheme: a nursing article waste collection device comprises a shell and a slide block, wherein four corners of the bottom of the shell are provided with universal wheels, two sides of the shell are internally provided with a placing groove, wherein,

a partition plate is fixed in the middle of the shell to partition a placing groove, a waste bucket is placed in the placing groove, a shock absorption seat is fixed at the bottom of the placing groove close to the waste bucket, a clamping groove is formed in the top of the waste bucket, a clamping sleeve is arranged in the clamping groove, and a sliding groove is formed in one side, close to the waste bucket, of the shell and the partition plate;

the sliding block is positioned on one side of the waste bucket close to the sliding groove, the opening of the shell close to the placing groove is rotatably connected with a top cover, a feed port penetrates through the middle of the top cover, the bottom of the top cover close to the feed port is rotatably connected with a feed port cover, a connecting frame is fixed on one side of the feed port cover, and a heavy block is fixed on the top of one side of the connecting frame away from the feed port cover;

the top cap is kept away from and is run through with shell rotation department's both sides and have the opening, the top cap is close to the open-ended top and has seted up the pin groove, the shell is close to open-ended one side and rotates and be connected with the dwang, one side that the shell was kept away from to the dwang is fixed with the pin.

Preferably, the shock mount passes through fixing base and shell fixed connection, the first connecting groove has been seted up to one side that the shock mount is close to the waste bin, the internal connection in first connecting groove has the head rod, one side that the fixing base was kept away from to the head rod is fixed with the supporting seat, the cover has first spring on the head rod between supporting seat to the fixing base, one side that the head rod was kept away from to the supporting seat is fixed with the cushion.

Preferably, the supporting seat and the fixed seat form an elastic structure through a first spring.

Preferably, the inner size of the sliding groove is matched with the outer size of the sliding block, and the sliding groove and the sliding block form a sliding structure.

Preferably, the feed port cover coincides with the central axis of the feed port, and the outer diameter of the feed port cover is larger than the inner diameter of the feed port.

Preferably, the inner dimension of the opening is matched with the outer dimension of the stop lever, the length of the stop lever is larger than the width of the opening, and the opening is perpendicular to the stop lever groove.

Preferably, the inner dimension of the stop lever groove is matched with the outer dimension of the stop lever, and the stop lever groove and the stop lever form a clamping structure.

Preferably, the dwang is rotated through the second connecting rod and is connected with the shell, the spring groove has been seted up to one side inside that the shell was kept away from to the second connecting rod, the second spread groove has been seted up to one side that the shell was kept away from to the second connecting rod, the internal connection of second spread groove has the third connecting rod, the one end that the third connecting rod is located the spring inslot is fixed with the baffle, the cover has the second spring to the third connecting rod of second spread groove, one side that the second connecting rod was kept away from to the third connecting rod is fixed with the fourth connecting rod.

Compared with the prior art, the invention has the beneficial effects that: this nursing materials garbage collection device:

1. the nursing waste is classified according to the type of the nursing waste after the nursing waste is used, and the nursing waste is separately collected through the 2 waste barrels arranged on the two sides, so that part of the nursing waste can be reused;

2. the nursing waste is thrown into the feeding hole, so that the nursing waste is pressed on the feeding hole cover, the feeding hole cover is balanced with the connecting frame and the heavy block, when the mass of the feeding hole cover is increased, the feeding hole cover is rotated downwards to open the feeding hole, meanwhile, the feeding hole cover drives the connecting frame and the heavy block to rotate upwards, so that the nursing waste enters a waste bag of the waste barrel, and then after the feeding hole cover is balanced with the connecting frame and the heavy block again, the heavy block moves downwards through self gravity to rotate the feeding hole cover upwards to block the feeding hole, so that the smell of the nursing waste is prevented from being released through the feeding hole;

3. the shock absorption seat is arranged, when the waste barrel is vibrated to move up and down, the first spring forms an elastic structure through the supporting seat and the fixed seat, so that the vibration borne by the waste barrel is reduced through elastic deformation of the first spring, and the noise generated by collision between the waste barrel and the shell is avoided;

4. the sliding structure is formed by the sliding chute and the sliding block, so that the waste barrel is prevented from shaking left and right and colliding the inner wall of the shell;

5. the stop lever and the stop lever groove are arranged, the top cover is closed, when the top cover covers the shell, the stop lever enters the inside of the opening, the stop lever is lifted, the second spring is compressed, after the stop lever is completely moved out of the opening, the stop lever is rotated to enable the stop lever to rotate 90 degrees, after the stop lever is overlapped with the stop lever groove, the stop lever is loosened, the second spring pushes the stop lever to move downwards, the stop lever enters the stop lever groove, and the top cover is convenient to fix;

6. the opening is formed, the inner size of the opening is matched with the outer size of the stop lever, when the top cover is covered, the stop lever can move in the opening, and the stop lever can conveniently enter the inside of the stop lever groove through rotation after penetrating through the opening.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1;

fig. 4 is a schematic view of a top cover fixing structure of the present invention.

In the figure: 1. a housing; 2. a universal wheel; 3. a placement groove; 4. a partition plate; 5. a waste bin; 6. a shock absorbing seat; 601. a fixed seat; 602. a first connecting groove; 603. a first connecting rod; 604. a supporting seat; 605. a first spring; 606. a soft cushion; 7. a card slot; 8. a card sleeve; 9. a chute; 10. a slider; 11. a top cover; 12. a feed inlet; 13. a feed inlet cover; 14. a connecting frame; 15. a weight block; 16. an opening; 17. a stopper groove; 18. rotating the rod; 1801. a second connecting rod; 1802. a spring slot; 1803. a second connecting groove; 1804, third connecting rod; 1805. a baffle plate; 1806. a second spring; 1807. a fourth connecting rod; 19. a stop lever.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a nursing article waste collecting device comprises a shell 1, universal wheels 2, placing grooves 3, a partition plate 4, a waste bucket 5, a shock absorption seat 6, a clamping groove 7, a clamping sleeve 8, a sliding groove 9, a sliding block 10, a top cover 11, a feeding hole 12, a feeding opening cover 13, a connecting frame 14, a weight block 15, an opening 16, a stop lever groove 17, a rotating rod 18 and a stop lever 19, wherein the universal wheels 2 are installed at four corners of the bottom of the shell 1, the placing grooves 3 are formed in the two sides of the shell 1, wherein,

a partition plate 4 is fixed in the middle of the shell 1 to separate the placing groove 3, a waste barrel 5 is placed in the placing groove 3, a shock absorption seat 6 is fixed at the bottom of the placing groove 3 close to the waste barrel 5, the shock absorption seat 6 is fixedly connected with the shell 1 through a fixed seat 601, a first connecting groove 602 is formed in one side of the shock absorption seat 6 close to the waste barrel 5, a first connecting rod 603 is connected in the first connecting groove 602, a supporting seat 604 is fixed at one side of the first connecting rod 603 away from the fixed seat 601, a first spring 605 is sleeved on the first connecting rod 603 between the supporting seat 604 and the fixed seat 601, a soft cushion 606 is fixed at one side of the supporting seat 604 away from the first connecting rod 603, the supporting seat 604 and the fixed seat 601 form an elastic structure through the first spring 605, when the shell 1 moves through the universal wheel 2, the waste barrel 5 is vibrated to move up and down, an elastic structure is formed by the supporting seat 604 and the fixing seat 601 through the first spring 605, so that the first spring 605 reduces the vibration of the waste barrel 5 through elastic deformation, and avoids the noise caused by the collision of the waste barrel 5 and the shell 1, the top of the waste barrel 5 is provided with a clamping groove 7, a clamping sleeve 8 is arranged inside the clamping groove 7, one sides of the shell 1 and the partition plate 4 close to the waste barrel 5 are provided with a sliding groove 9, the inner size of the sliding groove 9 is matched with the outer size of the sliding block 10, the sliding groove 9 and the sliding block 10 form a sliding structure, when the waste barrel 5 is vibrated, the waste barrel 5 moves in the shell 1, the waste barrel 5 drives the sliding block 10 to move in the sliding groove 9, and the sliding structure formed by the sliding groove 9 and the sliding block 10 avoids the waste barrel 5 from shaking left and right to collide with the inner wall of the shell 1;

the slider 10 is positioned on one side of the waste bucket 5 close to the chute 9, the opening of the shell 1 close to the placing groove 3 is rotatably connected with a top cover 11, a feed port 12 penetrates through the middle part of the top cover 11, the bottom of the top cover 11 close to the feed port 12 is rotatably connected with a feed port cover 13, the feed port cover 13 is overlapped with the central axis of the feed port 12, the outer diameter of the feed port cover 13 is larger than the inner diameter of the feed port 12, the feed port cover 13 is positioned under the feed port 12, the feed port cover 13 can completely block the feed port 12, odor in the waste bucket 5 is prevented from being emitted through the feed port 12, deodorization on the waste bucket 5 is facilitated, a connecting frame 14 is fixed on one side of the feed port cover 13, and a weight 15 is fixed on the top of one side of the connecting frame 14 away from the;

openings 16 penetrate through two sides of the top cover 11 far away from the rotating part of the shell 1, the inner size of each opening 16 is matched with the outer size of each blocking rod 19, the length of each blocking rod 19 is larger than the width of each opening 16, the openings 16 are perpendicular to the blocking rod grooves 17, when the top cover 11 is covered or removed, the blocking rods 19 can move in the openings 16, the overlooking of the openings 16 and the blocking rods 19 is rectangular, when the top cover 11 is covered, after the blocking rods 19 completely penetrate through the openings 16, the blocking rods 19 enter the inner parts of the blocking rod grooves 17 through rotation, the blocking rods 19 are perpendicular to the openings 16, the length of the blocking rods 19 is larger than the width of the openings 16, the blocking rods 19 are prevented from entering the inner parts of the openings 16, the top cover 11 is convenient to fix the top cover 11, the blocking rod grooves 17 are formed in the top of the top cover 11 close to the openings 16, the inner sizes of the blocking rod grooves 17 are matched with the outer sizes of the blocking rods, and the stop lever groove 17 and the stop lever 19 form a clamping structure, when the stop lever 19 enters the stop lever groove 17, the stop lever 19 is prevented from rotating out of the stop lever groove 17 by the clamping structure formed by the stop lever groove 17 and the stop lever 19, one side of the housing 1 close to the opening 16 is rotatably connected with a rotating lever 18, the rotating lever 18 is rotatably connected with the housing 1 by a second connecting rod 1801, one side of the second connecting rod 1801 far away from the housing 1 is internally provided with a spring groove 1802, one side of the second connecting rod 1801 far away from the housing 1 is provided with a second connecting groove 1803, the inside of the second connecting groove 1803 is connected with a third connecting rod 1804, one end of the third connecting rod 1804 located in the spring groove 1802 is fixed with a baffle 1805, a second spring 1806 is sleeved on the third connecting rod 1804 from the baffle 1805 to the second connecting groove 1803, one side of the third connecting rod 1804 far away from the second connecting rod 1801 is fixed with a fourth connecting rod 1807, a stop lever 19 is fixed on one side of the rotating lever 18 far away from the shell 1.

The working principle is as follows: when the nursing article waste collection device is used, firstly, the stop rod 19 is pulled, the stop rod 19 drives the fourth connecting rod 1807 to move upwards, the fourth connecting rod 1807 drives the third connecting rod 1804 to move upwards, the second spring 1806 is compressed, after the stop rod 19 moves out of the inner part of the stop rod groove 17, the stop rod 19 is rotated to enable the stop rod 19 to coincide with the opening 16, the stop rod 19 is loosened to enable the stop rod 19 to enter the opening 16, then the top cover 11 is moved away, the placing groove 3 is opened, the cutting sleeve 8 is moved out, a waste bag is taken out, then a new waste bag is placed in the waste bag 5, the edge of the waste bag crosses the cutting groove 7, the cutting sleeve 8 is clamped into the inner part of the cutting groove 7, the edge of the waste bag is fixed through the cutting sleeve 8, then the top cover 11 is closed to enable the top cover 11 to cover the shell 1, the stop rod 19 enters the inner part of the opening 16, the stop rod 19 is pulled, the second spring 1806 is compressed, after the stop rod 19 is completely, the stop lever 19 is rotated to rotate the stop lever 19 by 90 degrees, after the stop lever 19 is overlapped with the stop lever groove 17, the stop lever 19 is loosened, the second spring 1806 pushes the stop lever 19 to move downwards, the stop lever 19 enters the stop lever groove 17 to fix the top cover 11, then the shell 1 is moved, the shell 1 is moved through the universal wheel 2 to make the waste barrel 5 vibrated, so that the waste barrel 5 moves in the shell 1, the waste barrel 5 drives the sliding block 10 to move in the sliding groove 9, through the sliding structure formed by the sliding groove 9 and the sliding block 10, the situation that the waste barrel 5 is shaken left and right to collide with the inner wall of the shell 1 is avoided, so that the waste barrel 5 can only move up and down, when the waste barrel 5 is shaken to move up and down, the elastic structure is formed by the supporting seat 604 and the fixed seat 601 through the first spring 605, so that the first spring 605 reduces the waste barrel 5 through elastic deformation, and the situation that the waste barrel 5 collides with the shell 1 to generate noise is avoided, the shell 1 is moved to a designated place, then after the nursing waste is used, the nursing waste is classified according to the type of the nursing waste, part of the nursing waste can be reused, the nursing waste is thrown into the feeding hole 12, the nursing waste is pressed on the feeding hole cover 13, the feeding hole cover 13 is balanced with the connecting frame 14 and the weight 15, when the mass of the feeding hole cover 13 is increased, the feeding hole cover 13 is rotated downwards to open the feeding hole 12, meanwhile, the feeding port cover 13 drives the connecting frame 14 and the weight 15 to rotate upwards, so that the nursing waste enters the waste bag of the waste barrel 5, and then after the feeding port cover 13 is balanced with the connecting frame 14 and the weight 15 again, the weight 15 moves downward by its own weight to rotate the inlet cap 13 upward to block the inlet 12 and prevent the odor of the nursing waste from being emitted through the inlet 12, which is not described in detail in this specification and is well known to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.