CN210519802U - Chicken tray - Google Patents

Chicken tray Download PDF

Info

Publication number
CN210519802U
CN210519802U CN201921450943.9U CN201921450943U CN210519802U CN 210519802 U CN210519802 U CN 210519802U CN 201921450943 U CN201921450943 U CN 201921450943U CN 210519802 U CN210519802 U CN 210519802U
Authority
CN
China
Prior art keywords
shaft
trough
cover plate
pedal
chicken
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201921450943.9U
Other languages
Chinese (zh)
Inventor
王志明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Puhui Agriculture And Animal Husbandry Technology Co ltd
Original Assignee
Qingdao Puhui Agriculture And Animal Husbandry Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Puhui Agriculture And Animal Husbandry Technology Co ltd filed Critical Qingdao Puhui Agriculture And Animal Husbandry Technology Co ltd
Priority to CN201921450943.9U priority Critical patent/CN210519802U/en
Application granted granted Critical
Publication of CN210519802U publication Critical patent/CN210519802U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Feeding And Watering For Cattle Raising And Animal Husbandry (AREA)

Abstract

The utility model discloses a chicken feed tray, which belongs to the technical field of poultry breeding equipment and is used for solving the technical problems that in the prior art, the chicken feed tray is placed outdoors and is easily eaten by animals such as birds, mice and the like, the feeding cost is increased, and the trough of the chicken feed tray is exposed outside and is easily wetted by rainwater; the utility model is provided with a body for containing feed, and a convex body outer wall trough is arranged on the side part of the body; the cover plate which is covered above the trough is rotationally connected with the body through a first shaft; the pedal for treading is rotationally connected with the body through a second shaft, the second shaft and the first shaft are not on the same vertical axis, and the second shaft and the first shaft are not on the same horizontal axis; a supporting device supported between the cover plate and the pedal plate in a vertical displacement manner, wherein the pedal plate drives the cover plate to open or close the trough in a rotating manner around a first shaft through the supporting device; the utility model discloses have and prevent that the animal from eating by steal the fodder, the poultry can open or the beneficial effect of closing automatically when having a meal.

Description

Chicken tray
Technical Field
The utility model relates to a poultry farming equipment technical field especially relates to a chicken charging tray.
Background
At present, in the chicken breeding process, in order to improve the meat taste and feather glossiness of chicken meat, chickens are generally raised in a larger outdoor breeding field in a scattered way;
in the prior art, a chicken tray for feeding free-range chickens comprises a tray body and a hopper, wherein the hopper is fixedly connected to the middle of the tray body, a trough is formed between the hopper and the tray body, the hopper is provided with a discharge hole communicated with the trough, feed automatically slides into the trough through the discharge hole, and chickens can peck the feed in the trough when eating the feed;
in addition, the trough of the chicken tray is exposed outside, so that the feed is easily soaked by rainwater in rainy days, and the breeding of bacteria can cause adverse effects on the health of the chicken;
therefore, the utility model provides a chicken tray which can prevent the feed from being eaten by the animals and can automatically open or close the trough when the poultry has a meal
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects existing in the prior art and providing a chicken tray which can prevent animals from eating feed and poultry and can automatically open or close a trough when eating.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model discloses a chicken charging tray, include:
the feed container comprises a body for containing feed, wherein a food groove protruding out of the outer wall of the body is distributed on the side part of the body;
the cover plate covered above the trough is rotationally connected with the body through a first shaft;
the pedal for treading is rotationally connected with the body through a second shaft, the second shaft is not on the same vertical axis with the first shaft, and the second shaft is not on the same horizontal axis with the first shaft;
a supporting device supported between the cover plate and the pedal plate in a vertically displaceable manner, the pedal plate driving the cover plate to open or close the trough rotationally about the first axis by the supporting device;
wherein, trample the footboard, strutting arrangement drive the apron opens the trough.
Furthermore, the outer surfaces of two opposite side walls of the body are symmetrically and fixedly connected with the first shaft and the second shaft, and the crib is not on the same plane with the first shaft and the second shaft.
Further, the trough upper surface extends obliquely downward from the body end, and the cover upper surface is parallel to the trough upper surface.
Furthermore, the cover plate is provided with a balancing weight for changing the overall quality of the cover plate.
Further, the supporting device comprises a base fixedly connected with the body and an upright post vertically and slidably connected to the base;
and one end of the upright post is contacted with the cover plate, and the other end of the upright post is contacted with the pedal.
Furthermore, both ends of the upright post are of a hemispherical structure, one end of the upright post is in sliding contact with the cover plate, and the other end of the upright post is in sliding contact with the pedal.
Furthermore, rolling bodies are mounted at two ends of the upright post, and the rolling bodies are in rolling contact with the cover plate and the pedal.
Further, the rolling bodies are balls or rollers.
Furthermore, the supporting device is a connecting rod, one end of the connecting rod is rotatably connected with the cover plate through a hinge shaft, and the other end of the connecting rod is rotatably connected with the pedal through a hinge shaft.
Furthermore, the upper surface of the pedal is provided with anti-skid corrugated ribs.
In the technical scheme, the utility model provides a chicken charging tray, beneficial effect:
1. the utility model relates to a body, the first shaft rotation that the body was installed is connected with the apron, through the apron closing cap on trough upper portion, guarantees that when the chicken was not having a meal, animals such as birds, mouse avoided eating the fodder in the trough secretly, saved the fodder, realized the purpose of practicing thrift raising cost;
secondly, also avoid rainwater entering the trough when raining on the trough through the apron closing cap, guarantee the fodder drying in the trough, reduce bacterial growing, reduce the sick, dead probability of chicken, further reduce the cost of raising.
2. The utility model discloses a body, the second shaft swivelling joint that the body was installed has the footboard, and through trampling the footboard, the apron of closing cap on the trough is opened to the vertical displacement of footboard drive strutting arrangement, and after finishing with dinner, the chicken leaves the footboard, and the apron is through the dead weight automatic closing cap on the trough, has realized that the chicken can open automatically or close the purpose of trough, avoids raising personnel manual operation, has reduced intensity of labour, convenient management practices thrift administrative cost.
In addition, the corrugated edge is arranged on the upper surface of the pedal, so that the chicken feet can be gripped, the situation that the chicken feet slide down from the pedal when the pedal is trodden on the pedal to cause the cover plate to fall and impact the head of a chicken is avoided, and the use safety is ensured.
3. The utility model discloses a trough, through setting the trough upper surface to the slope structure, apron upper surface and trough upper surface keep parallel, are favorable to the rainwater to flow away fast, avoid apron upper surface ponding.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic view of the overall structure of a chicken feed tray disclosed by the utility model;
FIG. 2 is a front view of the chicken feed tray disclosed by the present invention;
FIG. 3 is a front view of another embodiment of the chicken feed tray disclosed by the present invention;
FIG. 4 is a schematic view of the overall structure of the chicken feed tray cover plate disclosed by the present invention;
FIG. 5 is a schematic view of the overall structure of the chicken feed tray pedal disclosed by the present invention;
FIG. 6 is a schematic structural view of another embodiment of the chicken feed tray column disclosed by the present invention;
fig. 7 is a schematic structural view of another embodiment of the chicken feed tray column disclosed by the present invention.
Description of reference numerals:
1. a body; 2. an end cap; 3. a trough; 4. a cover plate; 5. a pedal, 6, a first shaft, 7, a second shaft; 8. corrugation; 9. an ear plate; 10. a support device; 11. a base; 12. a column; 13. a rolling body; 14. a hinge shaft; 17. and a balancing weight.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in FIGS. 1-4;
utility model chicken feed tray, include:
the feed containing device comprises a body 1 for containing feed, wherein a feeding trough 3 protruding out of the outer wall of the body 1 is distributed on the side part of the body 1;
the cover plate 4 which is covered above the feeding trough 3 is rotationally connected with the body 1 through a first shaft 6;
the pedal 5 for stepping is rotationally connected with the body 1 through a second shaft 7, the second shaft 7 is not on the same vertical axis with the first shaft 6, and the second shaft 7 is not on the same horizontal axis with the first shaft 6;
a supporting device 10 supported between the cover 4 and the pedal 5 in a vertically displaceable manner, the pedal 5 driving the cover 4 to open or close the trough 3 rotationally about the first axis 6 by means of the supporting device 10;
wherein the pedal 5 is stepped on and the supporting device 10 drives the cover plate 4 to open the feeding trough 3.
Preferably, the outer surfaces of two opposite side walls of the body 1 are symmetrically and fixedly connected with a first shaft 6 and a second shaft 7, and the feeding trough 3 is not in the same plane with the first shaft 6 and the second shaft 7.
Specifically, in the structure, as shown in fig. 2, a body 1 is in a cuboid structure, a cavity for containing feed is formed in the body 1, an end cover 2 is covered at the top end, a trough 3 protruding out of the outer wall of the body 1 is formed in the lower portion of one outer wall of the body 1, the trough 3 is communicated with the cavity for containing feed of the body 1, a first shaft 6 and a second shaft 7 are fixedly connected to the outer wall of the end portion of the trough 3 of the body 1, the second shaft 7 and the first shaft 6 are not in the same horizontal axis, the first shaft 6 is positioned above the second shaft 7 in an inclined manner, in addition, the second shaft 7 and the first shaft 6 are not in the same vertical axis, as shown in fig. 4 and 5, lug plates 9 are respectively arranged on two sides of a cover plate 4 and a pedal 5, the tail end of the lug plate 9 of the cover plate 4 is rotatably connected with the first shaft 6, the middle of the lug plate 9 of the pedal 5 is rotatably, one end of a supporting device 10 is in contact with the lower surface of an ear plate 9 of the cover plate 4, the other end of the supporting device 10 is in contact with the upper surface of the ear plate 9 of the pedal 5, a chicken foot steps on the pedal 5, and the pedal 5 drives the supporting device 10 to vertically displace upwards to drive the cover plate 4 to open the trough 3;
in the structure, as shown in figure 3, when a chicken is not in a dining stage, the cover plate 4 is covered on the upper part of the trough 3 to prevent animals such as birds, mice and the like from eating the feed in the trough 3, so that the feed is saved, the aim of saving the feeding cost is fulfilled, meanwhile, the cover plate 4 is covered on the trough to prevent rainwater from entering the trough 3 when raining, so that the feed in the trough 3 is ensured to be dry, the bacterial growth is reduced, the probability of illness and death of the chicken is reduced, the feeding cost is further reduced,
referring to fig. 2, the chicken is at the stage of having a dinner, trample footboard 5 through the chicken self dead weight, footboard 5 drive strutting arrangement 10 opens apron 4 of closing cap on trough 3 with vertical displacement and has a dinner, after having a dinner, the chicken leaves footboard 5, apron 4 is through the dead weight automatic closing cap on trough 3, realized that the chicken is automatic to be opened or close the purpose of trough 3, avoid raising personnel manual operation, reduced intensity of labour, convenient management practices thrift administrative cost.
As shown in fig. 3;
preferably, the upper surface of the trough 3 extends obliquely downward from the end of the body 1, and the upper surface of the cover 4 is parallel to the upper surface of the trough 3.
Specifically, this structure is through setting 3 upper surfaces of trough into the slope structure to apron 4 upper surfaces keeps parallel with 3 upper surfaces of trough, is favorable to the rainwater to flow away fast, avoids 4 upper surface pondings of apron, also avoids trampling footboard 5 simultaneously and opens when apron 4, and ponding is located 1 side of body from end cover 4 and flows backward 3 inside pollution feeds in trough.
As shown in fig. 4;
preferably, the cover plate 4 is provided with a weight 17 for changing the overall mass of the cover plate 4.
Specifically, a plurality of mounting holes have been seted up to 4 lateral walls of apron in this structure, and mounting hole threaded connection has the nut, is equipped with balancing weight 17 in the mounting hole for change 4 overall quality of apron, match the quantity of balancing weight 17 according to the weight of chicken in different growth stages, improved the commonality of this album charging tray, preferred, sandy soil can be chooseed for use to balancing weight 17 material, according to the weight of chicken in different growth stages the sandy soil of filling in the mounting hole, and convenient for material collection has reduced manufacturing cost.
As shown in fig. 2;
preferably, the supporting device 10 comprises a base 11 fixedly connected with the body 1 and a column 12 vertically and slidably connected to the base 11;
and a pillar 12 having one end in contact with the cover 4 and the other end in contact with the step 5.
Preferably, both ends of the upright post 12 are in a hemispherical structure, one end of the upright post 12 is in sliding contact with the cover plate 4, and the other end of the upright post 12 is in sliding contact with the pedal 5.
Specifically, the supporting device 10 comprises a base 11 and an upright post 12, the base 11 is fixedly connected with the outer wall of the body 1, the upright post 12 is vertically and slidably connected to the base 11, two ends of the upright post 12 are both in a hemispherical structure, the upright post 12 is in sliding contact with the cover plate 4 and the pedal 5 through a spherical surface, the contact area is reduced, the friction force is reduced, and the cover plate 4 can be driven to rotate around the first shaft 6 in a labor-saving manner;
referring to fig. 3, when a chicken needs to have a meal, the foot of the chicken treads the pedal 5, the pedal 5 rotates clockwise around the second shaft 7, the tail end of the ear plate 9 of the pedal 5 pushes the upright post 12 to vertically push the cover plate 4 covered on the trough 3 in an upward displacement mode, after the meal is finished, the foot of the chicken leaves the pedal 5, the cover plate 4 is automatically covered on the trough 3 through self weight, and the purposes of automatic opening and automatic closing are achieved.
As shown in fig. 6;
in another embodiment, it is preferable that the pillar 12 is mounted with rolling bodies 13 at both ends, and the rolling bodies 13 are in rolling contact with the cover plate 4 and the pedal 5.
Specifically, the present embodiment is substantially the same as the above-described embodiments, except that by installing rolling bodies 13 at both ends of the pillar 12, it is preferable that the rolling bodies 13 be balls or rollers. Through rolling contact of the rolling bodies 13 with the cover plate 4 and the pedal 5, end abrasion of the upright post 12 is reduced, the service life of the upright post 12 is prolonged, and maintenance cost is saved.
As shown in fig. 7;
in another embodiment, the supporting device 10 is preferably a connecting rod, one end of the connecting rod is rotatably connected with the cover plate 4 through a hinge shaft 14, and the other end of the connecting rod is rotatably connected with the pedal 5 through the hinge shaft 14.
Specifically, the present embodiment is substantially the same as the above embodiments, except that the supporting device 10 is a connecting rod, one end of the supporting device 10 is rotatably connected to the cover plate 4 through a hinge 14, the other end of the supporting device 10 is rotatably connected to the pedal 5 through the hinge 14, and the supporting device 10, the cover plate 4 and the pedal 5 are rotatably connected through the hinge 14 to form a three-link mechanism, which has a simple structure and low manufacturing cost.
As shown in fig. 5;
preferably, the upper surface of the pedal 5 is provided with corrugated ribs 8 for skid resistance.
Specifically, through stupefied 8 of surface mounting ripple on footboard 5 in this structure, be favorable to the chicken foot gripping, slide down from the footboard when avoiding the chicken foot to trample footboard 5, lead to the apron whereabouts to strike the head of chicken, improve the safety in utilization.
In the technical scheme, the utility model provides a chicken feed tray;
the using method comprises the following steps:
when the chicken is not in a dining stage, the cover plate 4 is covered on the upper part of the feeding trough 3;
when the chicken needs to have a meal, the chicken feet tread the pedal 5, the pedal 5 drives the supporting device 10 to vertically displace to open the cover plate 4 covered on the feeding trough 3, the chicken can have a meal smoothly, after the meal is finished, the chicken feet leave the pedal 5, and the cover plate 4 is automatically covered on the feeding trough 3 through self weight.
Has the advantages that:
1. the utility model relates to a body, the first shaft rotation that the body was installed is connected with the apron, through the apron closing cap on trough upper portion, guarantees that when the chicken was not having a meal, animals such as birds, mouse avoided eating the fodder in the trough secretly, saved the fodder, realized the purpose of practicing thrift raising cost;
secondly, also avoid rainwater entering the trough when raining on the trough through the apron closing cap, guarantee the fodder drying in the trough, reduce bacterial growing, reduce the sick, dead probability of chicken, further reduce the cost of raising.
2. The utility model discloses a body, the second shaft swivelling joint that the body was installed has the footboard, and through trampling the footboard, the apron of closing cap on the trough is opened to the vertical displacement of footboard drive strutting arrangement, and after finishing with dinner, the chicken leaves the footboard, and the apron is through the dead weight automatic closing cap on the trough, has realized that the chicken can open automatically or close the purpose of trough, avoids raising personnel manual operation, has reduced intensity of labour, convenient management practices thrift administrative cost.
In addition, the corrugated edge is arranged on the upper surface of the pedal, so that the chicken feet can be gripped, the situation that the chicken feet slide down from the pedal when the pedal is trodden on the pedal to cause the cover plate to fall and impact the head of a chicken is avoided, and the use safety is ensured.
3. The utility model discloses a trough, through setting the trough upper surface to the slope structure, apron upper surface and trough upper surface keep parallel, are favorable to the rainwater to flow away fast, avoid apron upper surface ponding.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (10)

1. Chicken charging tray, its characterized in that includes:
the feed containing device comprises a body (1) for containing feed, wherein a feeding trough (3) protruding out of the outer wall of the body (1) is arranged on the side part of the body (1);
a cover plate (4) which is covered above the trough (3) is rotationally connected with the body (1) through a first shaft (6);
the pedal (5) for pedaling is rotationally connected with the body (1) through a second shaft (7), the second shaft (7) is not on the same vertical axis with the first shaft (6), and the second shaft (7) is not on the same horizontal axis with the first shaft (6);
a support means (10) supported vertically displaceable between the cover (4) and the footplate (5), the footplate (5) driving the cover (4) to open or close the trough (3) rotationally about the first axis (6) by means of the support means (10);
wherein the pedal (5) is stepped, and the supporting device (10) drives the cover plate (4) to open the trough (3).
2. A chicken feed tray as claimed in claim 1, wherein;
the outer surfaces of two opposite side walls of the body (1) are symmetrically fixedly connected with the first shaft (6) and the second shaft (7), and the crib (3) is not positioned on the same plane with the first shaft (6) and the second shaft (7).
3. A chicken feed tray as claimed in claim 1, wherein;
the upper surface of the trough (3) extends downwards from the end of the body (1) and is parallel to the upper surface of the trough (3) and the upper surface of the cover plate (4).
4. A chicken feed tray as claimed in claim 1, wherein;
the cover plate (4) is provided with a balancing weight (17) for changing the overall mass of the cover plate (4).
5. Chicken tray as claimed in any of the claims 1-4, characterized in that;
the supporting device (10) comprises a base (11) fixedly connected with the body (1) and an upright post (12) vertically connected to the base (11) in a sliding manner;
the upright column (12) has one end in contact with the cover plate (4) and the other end in contact with the pedal (5).
6. A chicken feed tray as claimed in claim 5, wherein;
the two ends of the upright post (12) are both of a hemispherical structure, one end of the upright post (12) is in sliding contact with the cover plate (4), and the other end of the upright post is in sliding contact with the pedal (5).
7. A chicken feed tray as claimed in claim 5, wherein;
rolling bodies (13) are installed at two ends of the upright column (12), and the rolling bodies (13) are in rolling contact with the cover plate (4) and the pedal (5).
8. A chicken feed tray as claimed in claim 7, wherein;
the rolling bodies (13) are balls or rollers.
9. Chicken tray as claimed in any of the claims 1-4, characterized in that;
the supporting device (10) is a connecting rod, one end of the connecting rod is rotatably connected with the cover plate (4) through a hinge shaft (14), and the other end of the connecting rod is rotatably connected with the pedal (5) through the hinge shaft (14).
10. Chicken tray as claimed in any of the claims 1-4, characterized in that;
the upper surface of the pedal (5) is provided with anti-skid corrugated ribs (8).
CN201921450943.9U 2019-09-03 2019-09-03 Chicken tray Active CN210519802U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921450943.9U CN210519802U (en) 2019-09-03 2019-09-03 Chicken tray

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921450943.9U CN210519802U (en) 2019-09-03 2019-09-03 Chicken tray

Publications (1)

Publication Number Publication Date
CN210519802U true CN210519802U (en) 2020-05-15

Family

ID=70604009

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921450943.9U Active CN210519802U (en) 2019-09-03 2019-09-03 Chicken tray

Country Status (1)

Country Link
CN (1) CN210519802U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111406675A (en) * 2020-05-26 2020-07-14 漳州市同丰科技服务有限公司 Ecological outdoor feeding equipment for breeding
CN112400750A (en) * 2020-12-08 2021-02-26 江西省昌铄农业开发有限公司 Self-service feeding water feeding system for poultry
CN113678756A (en) * 2021-08-23 2021-11-23 柠檬智能(深圳)有限公司 Feeding device with attraction function and feeding system thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111406675A (en) * 2020-05-26 2020-07-14 漳州市同丰科技服务有限公司 Ecological outdoor feeding equipment for breeding
CN112400750A (en) * 2020-12-08 2021-02-26 江西省昌铄农业开发有限公司 Self-service feeding water feeding system for poultry
CN113678756A (en) * 2021-08-23 2021-11-23 柠檬智能(深圳)有限公司 Feeding device with attraction function and feeding system thereof

Similar Documents

Publication Publication Date Title
CN210519802U (en) Chicken tray
CN106818516A (en) A kind of type animal husbandry feeding slot easy to use
CN109479755B (en) Practice thrift extensive water fowl of fodder and breed and use automatic feeding device
CN211185371U (en) Cattle and sheep are with licking brick fixing device
CN109717095B (en) Colony house system for ecological free-range flying chickens and method thereof
CN106332797A (en) Feeding device for stock farming in summer
CN209546542U (en) A kind of multi-functional environment-protection cultivating system
CN201797845U (en) Bird house
CN205727611U (en) A kind of poultry automatic feeding machine
CN205250103U (en) Automatic food bird food box is prevented digging in unloading
CN212381889U (en) Trough for livestock breeding
CN211832378U (en) Poultry feeding device
CN208724683U (en) A kind of poultry device for feeding with mosquito killing function
CN108575810B (en) Poultry raising cage for chickens, ducks and geese
CN208783489U (en) One kind can automatic blanking type feeding slot
CN221178901U (en) Feeding device for goose cultivation
CN213784841U (en) Poultry is raised and uses feeder
CN219628573U (en) Height-adjustable transformation breeding cage
CN212728423U (en) Channel device for ecological breeding
CN205455166U (en) Cowshed
CN215648725U (en) Lamb is trampled open-cover type manger
CN213848229U (en) Automatic feeding device of ecological chicken coop
CN214801541U (en) Feeding device for pig
CN220734018U (en) Feed dispersion feeding device for animal husbandry cultivation
CN220326506U (en) Anti-robbery feeding equipment for beef cattle breeding and feeding

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant