CN113337646B - Surface-assisted unhairing and smoothing processing device for leather raw materials - Google Patents

Surface-assisted unhairing and smoothing processing device for leather raw materials Download PDF

Info

Publication number
CN113337646B
CN113337646B CN202110557702.XA CN202110557702A CN113337646B CN 113337646 B CN113337646 B CN 113337646B CN 202110557702 A CN202110557702 A CN 202110557702A CN 113337646 B CN113337646 B CN 113337646B
Authority
CN
China
Prior art keywords
plate
sliding
boss
raw materials
machine body
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
CN202110557702.XA
Other languages
Chinese (zh)
Other versions
CN113337646A (en
Inventor
李明星
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.)
Wenzhou Gaofan Shoes Co ltd
Original Assignee
Wenzhou Gaofan Shoes 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 Wenzhou Gaofan Shoes Co ltd filed Critical Wenzhou Gaofan Shoes Co ltd
Priority to CN202110557702.XA priority Critical patent/CN113337646B/en
Publication of CN113337646A publication Critical patent/CN113337646A/en
Application granted granted Critical
Publication of CN113337646B publication Critical patent/CN113337646B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00Manufacture of leather; Machines or devices therefor
    • C14B1/02Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather
    • C14B1/04Fleshing, unhairing, samming, stretching-out, setting-out, shaving, splitting, or skiving skins, hides, or leather using slicking, scraping, or smoothing-out cylinders or blades fixed on supports, e.g. cylinders, in a plane substantially at right angles to the working surface
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00Manufacture of leather; Machines or devices therefor
    • C14B1/44Mechanical treatment of leather surfaces
    • C14B1/54Ironing
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B17/00Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B17/00Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C14B17/06Work feeding or clamping devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)

Abstract

The invention relates to the technical field of leather products, and discloses a surface assisted unhairing and smoothing processing device for a leather raw material, which comprises a machine body, wherein a conveying plate is arranged inside the machine body, a winding drum is arranged at the upper part of the conveying plate, a boss is arranged at the upper part of the conveying plate, a pressing wheel is arranged on one side, away from the winding drum, of the boss, a shearing plate is arranged at the upper part of the boss, a winding drum is arranged at the upper part of the shearing plate, a suction pipe is arranged on the side surface of the winding drum, and a steam disc is arranged inside the machine body.

Description

Surface-assisted unhairing and smoothing processing device for leather raw materials
Technical Field
The invention relates to the technical field of leather products, in particular to a surface-assisted unhairing and smoothing processing device for a leather raw material.
Background
Leather is a leather layer on the surface of an animal which is denatured and not easy to rot after chemical and physical processing, leather products are products prepared after the leather is processed, and leather can be prepared only through a plurality of procedures such as degreasing, unhairing, alkali soaking and the like. The existing leather raw material needs a worker to use a depilating tool for manual operation when depilating, the depilating operation is troublesome, the depilating efficiency is low, the depilating effect on the surface of the leather raw material is poor, the quality of the surface of the leather is affected, and after the depilating of the leather raw material, the surface flatness is not high, and the subsequent alkali leaching is affected.
For solving above problem, we have provided a leather raw materials and have mouled and smooth processingequipment with surface assistance, have possessed and to have carried out the processing that moults of automatic assistance to leather raw materials, leather raw materials moults processing convenient operation, and the efficiency of mouling is high, and the surface moults effectually, can smooth processing to the surface of leather raw materials, and the effect of leather raw materials surface treatment processing can effectively be improved to the advantage that leather raw materials surface treatment is effectual.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a surface auxiliary unhairing and smoothing processing device for leather raw materials, which has the advantages of capability of automatically assisting unhairing and processing the leather raw materials, convenience in unhairing and processing the leather raw materials, high unhairing efficiency, good surface unhairing effect, capability of smoothing and processing the surface of the leather raw materials and good surface treatment effect of the leather raw materials, and solves the problems of troublesome surface unhairing operation, low unhairing efficiency, poor surface unhairing effect of the leather raw materials and low surface smoothness after the leather raw materials are unhaired.
(II) technical scheme
In order to realize the purposes of automatically assisting in unhairing leather raw materials, convenient unhairing processing operation of the leather raw materials, high unhairing efficiency, good surface unhairing effect, smoothing processing of the surface of the leather raw materials and good surface treatment effect of the leather raw materials, the invention provides the following technical scheme: the utility model provides a processing apparatus is mouled and smooths with supplementary surface to leather raw materials, includes the organism, the inside of organism is provided with the delivery board, the upper portion of delivery board is provided with the reel, the upper portion of delivery board is provided with the boss, one side that the reel was kept away from to the boss is provided with the pinch roller, the upper portion of boss is provided with the shear plate, the upper portion of shear plate is provided with a roll material section of thick bamboo, the side surface of roll material section of thick bamboo is provided with the straw, the inside of organism is provided with the steam dish, the upper surface of delivery board is provided with the cylinder, the side of cylinder is provided with the fluted disc, the inside of organism is provided with drive gear, the inside sliding connection of organism has the slide, the inside sliding connection of slide has the pinion rack, the inside of pinion rack is provided with the master gear, the upper surface of pinion rack is provided with the slide bar, the upper portion of slide is provided with the slide rail, the lower surface of slide is provided with smooths the board.
Preferably, the reel has two, is horizontal parallel distribution, all is located the inside one side of keeping away from conveying board direction of delivery of organism, adopts the cross area to connect between two reels.
Preferably, the boss is located on one side of the winding drum away from the inner side surface of the machine body, and the shear plate corresponds to the upper surface of the boss.
Preferably, the outer surface of the winding barrel is designed with a cylindrical shell, and the suction pipe is communicated with the inside of the shell.
Preferably, the steam disk is positioned on one side of the pressing wheel along the conveying direction of the conveying plate.
Preferably, the number of the rollers is two, the rollers are distributed in a V shape and are located below the steam disc, the fluted disc and the corresponding roller are coaxially designed, and the driving gear is matched with the fluted disc.
Preferably, the sliding plate is located on the side surface of the inside of the machine body far away from the winding drum and is in sliding connection with the machine body in the horizontal direction.
Preferably, the inner surface of the toothed plate is designed with a gear ring, the gear ring is matched with the main gear, and the toothed plate and the sliding plate are in sliding connection in the vertical direction.
Preferably, the surface of the sliding rail is provided with a sliding groove which is the same as the shape of the gear ring in the toothed plate, and the upper end of the sliding rod is positioned in the sliding groove on the surface of the sliding rail.
Preferably, the smoothing plate is positioned at the upper part of the conveying plate and is vertically distributed with the conveying plate.
(III) advantageous effects
Compared with the prior art, the invention provides a surface-assisted unhairing and smoothing processing device for leather raw materials, which has the following beneficial effects:
1. this leather raw materials is with supplementary processingequipment that moults and smooths in surface uses through the cooperation of delivery board and reel, and reel and pinch roller are used with the cooperation of boss, and the shear plate is used with the cooperation of roll up the feed cylinder, can carry out the processing of mouling of automatic assistance to the leather raw materials, and the leather raw materials surface moults effectually, and the surface moults convenient operation, can effectively improve the efficiency of the processing of mouling in leather raw materials surface.
2. This leather raw materials is with supplementary processingequipment that moults and smooths of surface, cooperation through steam dish and cylinder is used, drive gear uses with the cooperation of fluted disc, the cylinder uses with the cooperation of delivery board, can extend the processing to the fold on leather raw materials surface, the master gear uses with the cooperation of pinion rack, the slide bar uses with the cooperation of slide rail, the slide uses with the cooperation of smoothing the flat board, smooth the cooperation of board and cylinder and use, can smooth the fold operation of going on smoothing to the surface of leather raw materials, leather raw materials surface treatment processing is effectual, the later stage of being convenient for is to the surface of leather raw materials and is soaked the alkali processing operation.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of the structure of FIG. 2 at A according to the present invention;
FIG. 4 is a side view of the present invention.
In the figure: 1. a body; 2. a conveying plate; 3. a reel; 4. a boss; 5. a pinch roller; 6. a shear plate; 7. a material rolling barrel; 8. a straw; 9. a steam tray; 10. a drum; 11. a fluted disc; 12. a drive gear; 13. a slide plate; 14. a toothed plate; 15. a main gear; 16. a slide bar; 17. a slide rail; 18. flattening the plate;
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.
Please refer to fig. 1-4, a surface-assisted unhairing and smoothing processing device for leather raw materials, comprising a machine body 1, a conveying plate 2 is arranged inside the machine body 1 and used for conveying the leather raw materials, two winding drums 3 are arranged on the upper portion of the conveying plate 2 and distributed in parallel horizontally and are both arranged on one side of the machine body 1, which is far away from the conveying direction of the conveying plate 2, the two winding drums 3 are connected by a cross belt and used for combing the hair on the surface of the leather raw materials, a boss 4 is arranged on the upper portion of the conveying plate 2 and located on one side of the winding drum 3, which is far away from the inner side surface of the machine body 1, the boss 4 is matched with a shearing plate 6 and used for shearing the hair on the surface of the leather raw materials, and a pressing wheel 5 is arranged on one side of the boss 4, which is far away from the winding drum 3 and is matched with the winding drum 3, so that the surface of the leather raw materials and the boss 4 are in a contact state.
The upper portion of boss 4 is provided with shear plate 6, shear plate 6 is corresponding with the upper surface of boss 4, be used for pruning the hair of leather raw materials, the upper portion of shear plate 6 is provided with a coil section of thick bamboo 7, coil section of thick bamboo 7's surface design has the cylinder casing, be used for collecting the hair of pruning, coil section of thick bamboo 7's side surface is provided with straw 8, straw 8 communicates with each other with the inside of casing, be used for collecting the hair of pruning, the inside of organism 1 is provided with steam dish 9, steam dish 9 is located pinch roller 5 along one side of delivery board 2 direction of delivery, be used for increasing the temperature on leather raw materials surface, the upper surface of delivery board 2 is provided with cylinder 10, cylinder 10 has two, be the V-arrangement and distribute, all be located steam dish 9's below, be used for stretching out the fold of leather raw materials.
The side of cylinder 10 is provided with fluted disc 11, adopt coaxial design between fluted disc 11 and the cylinder 10 that corresponds, drive gear 12 and 11 looks adaptations of fluted disc, be used for driving cylinder 10 and rotate, the inside of organism 1 is provided with drive gear 12, mesh with fluted disc 11, it rotates to drive fluted disc 11, the inside sliding connection of organism 1 has slide 13, slide 13 is located the inside side surface of keeping away from reel 3 one side of organism 1, be sliding connection on the horizontal direction with organism 1, be used for driving and smooth flat board 18 and remove, the inside sliding connection of slide 13 has pinion rack 14, the interior surface design of pinion rack 14 has the ring gear, with master gear 15 looks adaptations, pinion rack 14 is sliding connection with slide 13 in the vertical direction, be used for driving slide 13 and remove.
The inside of pinion rack 14 is provided with master gear 15, with the ring gear meshing of pinion rack 14 internal surface, it makes reciprocating motion to drive pinion rack 14, the upper surface of pinion rack 14 is provided with slide bar 16, the upper end of slide bar 16 is located the inside of slide rail 17 surface spout, a fixed track that is used for pinion rack 14 removes, the upper portion of slide 13 is provided with slide rail 17, the spout the same with the inside ring gear shape of pinion rack 14 is seted up on the surface of slide rail 17, a removal for slide bar 16, the lower surface of slide 13 is provided with smooths board 18, smooths board 18 and is located the upper portion of delivery board 2, be vertical distribution with delivery board 2, be used for smoothing the processing to the surface of leather raw materials.
The working principle is as follows: when the leather is processed, the device can be used for carrying out auxiliary unhairing and surface smoothing processing operation on the leather raw material, and the specific operation steps are as follows:
place the leather raw materials on the surface of delivery board 2 at first, then pass from the lower surface of reel 3, pass through the upper surface of boss 4 again, pass from the lower surface of pinch roller 5, start shear plate 6 simultaneously, can utilize delivery board 2 to carry the leather raw materials this moment, make reel 3 rotate through relevant drive arrangement, when reel 3 rotated, can comb the hair on leather raw materials surface.
When the hair on the surface of the leather material passes through the upper surface of the boss 4, the hair contacts with the surface of the cutting plate 6, the cutting plate 6 performs a trimming and unhairing operation on the hair on the surface of the leather, the winding barrel 7 rotates through the related driving device, the trimmed hair of the cutting plate 6 is wound into the inner part of the surface shell of the winding barrel 7, and the trimmed hair is absorbed into the suction pipe 8.
The leather raw material after being pruned and unhairing can continue to move on the surface of conveying plate 2, and when the leather raw material passed through the below of steam dish 9, steam dish 9 can spray hot steam on the surface of leather raw material, makes drive gear 12 rotate through relevant drive arrangement, and drive gear 12 drives two cylinders 10 through meshing with fluted disc 11 and rotates, and two cylinders 10 when rotating, can outwards stretch the surface of leather raw material, make the fold on leather raw material surface stretch out.
The main gear 15 is rotated by related driving equipment, the main gear 15 drives the toothed plate 14 to move through meshing with a toothed ring on the inner surface of the toothed plate 14, the toothed plate 14 drives the sliding plate 13 to move, the sliding plate 13 drives the smoothing plate 18 to move, meanwhile, under the matching action of the sliding rod 16 and the sliding rail 17, the main gear 15 can alternately mesh with the upper and lower toothed surfaces of the toothed ring on the inner surface of the toothed plate 14, so that the toothed plate 14 is driven to do reciprocating movement, correspondingly, the sliding plate 13 can drive the smoothing plate 18 to do reciprocating movement, the movement of the smoothing plate 18 can be matched with the roller 10, the surface of the leather raw material is smoothed, and accordingly, the surface of the leather raw material can be subjected to auxiliary unhairing and smoothing processing operations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (1)

1. The utility model provides a processing apparatus is mouled and smooths with surface assistance to leather raw materials, includes organism (1), its characterized in that: the machine body is characterized in that a conveying plate (2) is arranged in the machine body (1), a winding drum (3) is arranged on the upper portion of the conveying plate (2), a boss (4) is arranged on the upper portion of the conveying plate (2), a pressing wheel (5) is arranged on one side, away from the winding drum (3), of the boss (4), a shearing plate (6) is arranged on the upper portion of the boss (4), a material coiling barrel (7) is arranged on the upper portion of the shearing plate (6), a suction pipe (8) is arranged on the side surface of the material coiling barrel (7), a steam disc (9) is arranged in the machine body (1), a roller (10) is arranged on the upper surface of the conveying plate (2), a toothed disc (11) is arranged on the side surface of the roller (10), a driving gear (12) is arranged in the machine body (1), a sliding plate (13) is connected in the machine body (1) in a sliding manner, a main gear (15) is arranged in the sliding manner, a main gear plate (14) is arranged in the toothed plate (14), a sliding manner, a sliding rod (16) is arranged on the upper surface of the sliding plate (13), a sliding rail (17) is arranged on the sliding manner, a sliding rail (13), a toothed plate (18) is arranged on the lower surface of the sliding plate (18), and two flat plates (3) are distributed in parallel, all lie in the inside one side of keeping away from transport plate (2) direction of delivery of organism (1), adopt the cross area to connect between two reels (3), boss (4) lie in reel (3) and keep away from one side of organism (1) inboard surface, shear plate (6) are corresponding with the upper surface of boss (4), the surface design of reel section of thick bamboo (7) has the cylinder casing, straw (8) communicate with each other with the inside of casing, steam dish (9) lie in pinch roller (5) along one side of transport plate (2) direction of delivery, cylinder (10) have two, are the V-arrangement and distribute, all lie in the below of steam dish (9), adopt coaxial design between fluted disc (11) and the cylinder (10) that correspond, drive gear (12) and fluted disc (11) looks adaptation, slide (13) lie in organism (1) inside keep away from the side surface of reel (3) one side, be sliding connection with organism (1) in the horizontal direction, the internal surface design of pinion rack (14) has the ring gear, slide bar (15) looks adaptation, slide bar (14) and slide bar (13) are connected on the slide rail (17), slide rail (17) upper portion of slide rail (17) are located the same direction, slide rail (17) the slide rail (17) and the slide rail (17) of slide bar (17), is vertically distributed with the conveying plate (2).
CN202110557702.XA 2021-05-21 2021-05-21 Surface-assisted unhairing and smoothing processing device for leather raw materials Active CN113337646B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110557702.XA CN113337646B (en) 2021-05-21 2021-05-21 Surface-assisted unhairing and smoothing processing device for leather raw materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110557702.XA CN113337646B (en) 2021-05-21 2021-05-21 Surface-assisted unhairing and smoothing processing device for leather raw materials

Publications (2)

Publication Number Publication Date
CN113337646A CN113337646A (en) 2021-09-03
CN113337646B true CN113337646B (en) 2022-12-27

Family

ID=77470494

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110557702.XA Active CN113337646B (en) 2021-05-21 2021-05-21 Surface-assisted unhairing and smoothing processing device for leather raw materials

Country Status (1)

Country Link
CN (1) CN113337646B (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1268633A (en) * 1999-03-30 2000-10-04 董高峰 Conical gear swinging method for piston reciprocating straight-line mavement
CN208234926U (en) * 2018-03-01 2018-12-14 河南邦尼生物工程有限公司 A kind of leather pressuring flat device
CN108676927A (en) * 2018-07-31 2018-10-19 徐佳东 A kind of mechanical depilator for leather
CN210286153U (en) * 2019-05-13 2020-04-10 灌云亚欧服饰有限公司 Prevent effectual woven cloth of fold exhibition paper-back edition and put
CN210560509U (en) * 2019-09-20 2020-05-19 焦作隆丰皮草企业有限公司 Environment-friendly wool quilt finishing device for processing of raw wool cowhide leather
CN211734391U (en) * 2019-12-16 2020-10-23 东阳市亚星玩具有限公司 A leather processingequipment for toy production
CN212174972U (en) * 2020-02-24 2020-12-18 烟台职业学院 Leather products processing is with leveling device
CN212426073U (en) * 2020-04-11 2021-01-29 辽源市佳林造革有限责任公司 Leveling device is used in processing of leather products
CN111518965B (en) * 2020-04-29 2022-01-18 温州创汇皮革有限公司 Leather processing system and processing method
CN212864794U (en) * 2020-08-12 2021-04-02 浩源皮业(台山)有限公司 Raw material unhairing device for leather processing
CN112811192A (en) * 2021-01-22 2021-05-18 嘉兴晓轩贸易有限公司 Device convenient to bush quick adjustment is carried and is collected
CN114293334A (en) * 2021-12-13 2022-04-08 宁波日祥材料科技有限公司 Carpet surface that contains new material is repaiied hair with supplementary receipts hair device

Also Published As

Publication number Publication date
CN113337646A (en) 2021-09-03

Similar Documents

Publication Publication Date Title
CN104206512B (en) Full-automatic shrimp decorticator
CN110371775A (en) Wind is used in a kind of cotton sewing thread production easy to disassemble
CN113337646B (en) Surface-assisted unhairing and smoothing processing device for leather raw materials
CN110436232A (en) Reel is used in a kind of production of recycled writing paper
CN108588908B (en) Wool spinning raw material feeding method
CN109797259B (en) Cow leather treatment equipment and production process thereof
CN114798746A (en) Cold rolling processing apparatus that fine work steel preparation was used
CN112962261B (en) Surface fluff treatment and surface smoothing device before cloth printing
CN214655476U (en) Adjusting drawing structure of cotton drawing frame for high-distribution full-cotton open-end spinning
CN213856399U (en) Quick take-up of nonrust steel wire
CN113521344A (en) Medical gauze disinfection treatment device
CN113787428A (en) Metal wire drawing machine with automatic cooling and cleaning functions and capable of controlling tension
CN205710785U (en) Fresh Corii Caprae seu Ovis depilator
CN215207877U (en) Prevent associated dog chews cutting device for production
CN218903120U (en) Wire rod peeling device
CN221460417U (en) Dehairing device for leather processing
CN220685176U (en) Humidifying equipment for leather production
CN216107015U (en) Flattening device for leather processing
CN219653200U (en) Carding machine carding device for sewing thread production
CN220995767U (en) Composite device
CN212139131U (en) Wool shaving machine
CN220658106U (en) Leather surface finishing device
CN113201602B (en) Prevent broken skin chrome-free tanning cushion leather production meat membrane scraping device
CN216063958U (en) Polyurethane slurry back roller coating equipment for artificial leather microfiber leather
CN113767962B (en) Flavor fish skin processing production descales and section device thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20221212

Address after: 325100 Dongou Industrial Zone, Oubei Street, Yongjia County, Wenzhou City, Zhejiang Province (in Zhejiang Yaboli Furniture Co., Ltd.)

Applicant after: Wenzhou Gaofan Shoes Co.,Ltd.

Address before: 445000 No. 8, group 10, mashaping village, Yesanguan Town, Badong County, Enshi Tujia and Miao Autonomous Prefecture, Hubei Province

Applicant before: Li Mingxing

GR01 Patent grant
GR01 Patent grant