CN108607904A - A kind of three roller differential variable curvature numerical control plate bending rolls - Google Patents
A kind of three roller differential variable curvature numerical control plate bending rolls Download PDFInfo
- Publication number
- CN108607904A CN108607904A CN201810415552.7A CN201810415552A CN108607904A CN 108607904 A CN108607904 A CN 108607904A CN 201810415552 A CN201810415552 A CN 201810415552A CN 108607904 A CN108607904 A CN 108607904A
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- Prior art keywords
- rack
- roller
- lower roll
- worm screw
- pressure roller
- Prior art date
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- Granted
Links
- 238000005452 bending Methods 0.000 title claims abstract description 20
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 241000237858 Gastropoda Species 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000013000 roll bending Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011112 process operation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a kind of three roller differential variable curvature numerical control plate bending rolls, including pedestal, mobile lower roll and Weight plate, organic frame is arranged in the top of the pedestal, the rack is fixed with the tube chamber welds with base, the top of the rack is provided with fixed worm screw, the fixed worm screw is detachably connected with the rack, and the left end of the fixed worm screw is provided with upper roller, and the upper roller is detachably connected with the fixed worm screw；By being provided with mobile lower roll and hydraulic pump, while by upper roller gearshift adjustment, hydraulic pressure pump operation can be passed through, the position of mobile lower roll, and then the variable curvature of changeable roll bending machine workpieces are adjusted, and then roller bearing speed change can be made up, workpiece variable curvature is caused to generate error, ensure the precision of numerical control plate bending roll processing, when workpiece discharging, it can be powered and be run by lifting motor, press support shaft, take up upper roller, the speed of workpiece discharging is accelerated, it is time saving and energy saving, reduce the labor intensity of staff.
Description
Technical field
The invention belongs to veneer reeling machine technical fields, and in particular to a kind of three roller differential variable curvature numerical control plate bending rolls.
Background technology
Veneer reeling machine is a kind of equipment making sheet metal bending forming using working roll, can shape cylindrical member, Tapered Cup etc. no
The part of similar shape is very important a kind of process equipment, and the operation principle of veneer reeling machine is outer by hydraulic coupling, mechanical force etc.
The effect of power, makes working roll move, to make plank bend or roll to shape.
Original numerical control plate bending roll still has several drawbacks place, and numerical control plate bending roll is in operation in use, being turned by roller bearing
Speed changes and then changes the variable curvature of workpiece, and roller bearing speed change while may cause workpiece variable curvature to generate error, influence numerical control
The machining accuracy of veneer reeling machine.
Invention content
The purpose of the present invention is to provide a kind of three roller differential variable curvature numerical control plate bending rolls, to solve in above-mentioned background technology
The original numerical control plate bending roll proposed still has several drawbacks place, and numerical control plate bending roll is in operation in use, passing through roller rotation rate
Change and then change the variable curvature of workpiece, roller bearing speed change while may cause workpiece variable curvature to generate error, influence numerical control volume
The problem of machining accuracy of trigger.
To achieve the above object, the present invention provides the following technical solutions：A kind of three roller differential variable curvature numerical control plate bending rolls, packet
Pedestal, mobile lower roll and Weight plate are included, organic frame is arranged in the top of the pedestal, and the rack is fixed with the tube chamber welds with base,
The top of the rack is provided with fixed worm screw, and the fixed worm screw is detachably connected with the rack, the fixed worm screw
Left end is provided with upper roller, and the upper roller is detachably connected with the fixed worm screw, the upper roller far from the fixed worm screw one
End, which is provided with, overturns, and described overturn connect with the gantry rotation, and lower roll, the lower roll and institute are provided with below the upper roller
Gantry rotation connection to be stated, adjusting screw rod is provided with below the lower roll, the adjusting screw rod is detachably connected with the rack,
The described one end of fixed worm screw far from the upper roller is provided with support shaft, and the support shaft detachably connects with the fixed worm screw
It connects, the right end of the support shaft is provided with pressure roller device, and the pressure roller device is detachably connected with the rack, under the support shaft
Side is provided with brake, and the brake is detachably connected with the pedestal, and the right end of the brake is provided with speed reducer, institute
It states speed reducer to be fixedly connected with the pedestal, the right end of the speed reducer is provided with main motor, the main motor and the pedestal
It is detachably connected, the mobile lower roll is mounted on the inside of rack, and the mobile lower roll is connect with the gantry rotation, the shifting
Roller set is provided on the outside of dynamic lower roll, the roller set is detachably connected with the mobile lower roll, and the bottom end of the roller set is provided with
Hydraulic pump, the hydraulic pump and the roller set are sequentially connected, and the Weight plate is mounted on the inside of pressure roller device, the Weight plate with
The pressure roller device is slidably connected, and the top of the Weight plate is provided with pressure roller shaft, and the pressure roller shaft and Weight plate welding are solid
Fixed, the top of the pressure roller shaft is provided with handwheel, and the handwheel is rotatablely connected with the pressure roller shaft, and the outside of the pressure roller shaft is leaned on
One end of nearly handwheel is provided with lifting motor, and the lifting motor is sequentially connected with the pressure roller shaft, and through lifting electricity
Machine, the main motor, hydraulic pump and lifting motor are electrically connected with external power supply.
Preferably, the mobile lower roll is sequentially connected with the hydraulic pump by hydraulic stem.
Preferably, the Weight plate is sequentially connected with the lifting motor by the pressure roller shaft.
Preferably, the upper roller is rotatablely connected with the rack by connecting rod.
Preferably, the support shaft is fixedly connected with the upper roller by the fixed worm screw.
Compared with prior art, the beneficial effects of the invention are as follows：The three roller differential variable curvature numerical control roll bending of one kind of the present invention
Machine while by upper roller gearshift adjustment, can be adjusted and moved by hydraulic pressure pump operation by being provided with mobile lower roll and hydraulic pump
The position of dynamic lower roll, and then the variable curvature of changeable roll bending machine workpieces, and then roller bearing speed change can be made up, workpiece is caused to become bent
Rate generates error, it is ensured that the precision of numerical control plate bending roll processing, when workpiece discharging, can be passed through by being provided with lifting motor
Lifting motor, which is powered, to be run, and is pressed support shaft, is taken up upper roller, accelerates the speed of workpiece discharging, time saving and energy saving, reduces work people
The labor intensity of member.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the left view structural representation of the present invention；
Fig. 3 is the pressure roller device left view structural representation of the present invention；
In figure：1, pedestal；2, adjusting screw rod；3, it overturns；4, upper roller；5, lower roll；6, fixed worm screw；7, support shaft；8, it presses
Roller device；9, main motor；10, speed reducer；11, brake；12, rack；13, hydraulic pump；14, roller set；15, mobile lower roll；16, match
Weight plate；17, lifting motor；18, handwheel；19, pressure roller shaft.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of three roller differential variable curvature numerical control plate bending rolls, including
Organic frame 12 is arranged in pedestal 1, mobile lower roll 15 and Weight plate 16, the top of pedestal 1, and rack 12 is welded and fixed with pedestal 1, rack
12 top is provided with fixed worm screw 6, and fixed worm screw 6 is detachably connected with rack 12, and the left end of fixed worm screw 6 is provided with upper roller
4, upper roller 4 is detachably connected with fixed worm screw 6, and the one end of upper roller 4 far from fixed worm screw 6, which is provided with, overturns 3, overturn 3 and rack
The lower section of 12 rotation connections, upper roller 4 is provided with lower roll 5, and lower roll 5 is rotatablely connected with rack 12, and the lower section of lower roll 5 is provided with adjusting
Screw rod 2, adjusting screw rod 2 are detachably connected with rack 12, and the one end of fixed worm screw 6 far from upper roller 4 is provided with support shaft 7, supports
Axis 7 is detachably connected with fixed worm screw 6, and the right end of support shaft 7 is provided with pressure roller device 8, and pressure roller device 8 detachably connects with rack 12
It connects, the lower section of support shaft 7 is provided with brake 11, and brake 11 is detachably connected with pedestal 1, and the right end of brake 11 is provided with
Speed reducer 10, speed reducer 10 are fixedly connected with pedestal 1, and the right end of speed reducer 10 is provided with main motor 9, and main motor 9 can with pedestal 1
Dismantling connection, mobile lower roll 15 are mounted on the inside of rack 12, and mobile lower roll 15 is rotatablely connected with rack 12, mobile lower roll 15
Outside is provided with roller set 14, and roller set 14 is detachably connected with mobile lower roll 15, and the bottom end of roller set 14 is provided with hydraulic pump 13, hydraulic pressure
Pump 13 is sequentially connected with roller set 14, and Weight plate 16 is mounted on the inside of pressure roller device 8, and Weight plate 16 is slidably connected with pressure roller device 8, matches
The top of weight plate 16 is provided with pressure roller shaft 19, and pressure roller shaft 19 is welded and fixed with Weight plate 16, and the top of pressure roller shaft 19 is provided with hand
Wheel 18, handwheel 18 are rotatablely connected with pressure roller shaft 19, and the outside of pressure roller shaft 19 is provided with lifting motor 17 close to one end of handwheel 18,
Lifting motor 17 is sequentially connected with pressure roller shaft 19, and runs through lifting motor 17, and main motor 9, hydraulic pump 13 and lifting motor 17 are equal
It is electrically connected with external power supply.
In the present embodiment, the model Y2-160L-415KWB3 of main motor 9 is powered by main motor 9 and is run, in drive
Roller 4 is rotated with lower roll 5, and then carries out becoming bent working process to workpiece, it is ensured that the normal use of numerical control plate bending roll；Lifting
The model IE2-80M1-4P-B3 of motor 17 is powered by lifting motor 17 and is run, and is driven pressure roller shaft 19 to rotate, is promoted counterweight
Plate 16 slides on pressure roller device 8, and then Weight plate 16 is promoted to be pressed downward understanding that support shaft 7 drives upper roller 4 to stick up by 7 stress of support shaft
It rises, and then workpiece can be unloaded.
In the present embodiment, it can be changed by the rotating speed of change transfer roller when the variable curvature to workpiece is finely adjusted
Variable curvature, while can also be run by hydraulic pump 13, change the position of mobile lower roll 15, and then change or make up change and turn
The error of the rotational speed regulation variable curvature of roller and the adjusting for realizing workpiece variable curvature are put down by pull handle and overturn 3, then beaten
The power switch for opening lifting motor 17 is powered by lifting motor 17 and is run, and drives pressure roller shaft 19 to rotate, Weight plate 16 is promoted to exist
It is slided on pressure roller device 8, and then promotes Weight plate 16 to pull down support shaft 7 and drive upper roller 4 to tilt by 7 stress of support shaft, into
And workpiece can be unloaded, complete work pieces process operation.
Further, mobile lower roll 15 is sequentially connected with hydraulic pump 13 by hydraulic stem.
It in the present embodiment, is run by hydraulic pump 13, changes the position of mobile lower roll 15, and then change or make up change
The error of the rotational speed regulation variable curvature of transfer roller and the adjusting for realizing workpiece variable curvature.
Further, Weight plate 16 is sequentially connected with lifting motor 17 by pressure roller shaft 19.
It in the present embodiment, is powered and is run by lifting motor 17, driven pressure roller shaft 19 to rotate, promote Weight plate 16 in pressure roller
It is slided on device 8, and then promotes Weight plate 16 to pull down support shaft 7 and drive upper roller 4 to tilt by 7 stress of support shaft, Jin Erke
Workpiece is unloaded, the labor intensity of staff is reduced, it is time saving and energy saving, the speed of workpiece discharging is accelerated, work is improved
Efficiency.
Further, it overturns and 3 is rotatablely connected by connecting rod with rack 12.
In the present embodiment, overturning 3 is fixed by the connecting rod in the side of rack 12, when upper roller 4 and lower roll 5 stop operating,
Then 3 are overturned by handle pulling, promotes to overturn and 3 puts down upper roller 4, then will overturn 3 is placed in level, and again by pressure roller device 8
It is secondary to lift upper roller 4, and then workpiece is can be taken off, easy to operate, discharging is convenient.
Further, support shaft 7 is fixedly connected with upper roller 4 by fixed worm screw 6.
In the present embodiment, support shaft 7 is pulled down by Weight plate 16, and then fixed snail is driven by 7 stress of support shaft
6 stress of bar, and be that fulcrum tilts upper roller 4 to fix worm screw 6, the abrasion to rack 12 when upper roller 4 knocks is reduced, and install
Convenient disassembly is easily changed, economical and practical.
The operation principle and process for using of the present invention：After the present invention installs, user connects external power supply, opens power supply
Switch is adjusted the distance between upper roller 4 and lower roll 5 then according to the thickness of workpieces processing, and the diameter of processing,
It after to be adjusted, turns off the power switch, then lies in a horizontal plane in workpiece between upper roller 4 and lower roll 5 in gap, it is to be placed complete
Bi Hou is again turned on power switch, is powered and is run by main motor 9, drives upper roller 4 to be rotated with lower roll 5, and then to workpiece
It carries out becoming bent working process, it is bent change can be changed by the rotating speed of change transfer roller when the variable curvature to workpiece is finely adjusted
Rate, while can also be run by hydraulic pump 13, change the position of mobile lower roll 15, and then change or make up and change transfer roller
The error of rotational speed regulation variable curvature and the adjusting for realizing workpiece variable curvature after waiting for work pieces process, close the power supply of main motor 9
Switch, upper roller 4 or lower roll 5 stop operating, and then by pull handle, put down and overturn 3, then open the electricity of lifting motor 17
Source switch is powered by lifting motor 17 and is run, and drives pressure roller shaft 19 to rotate, Weight plate 16 is promoted to be slided on pressure roller device 8, into
And promote Weight plate 16 to pull down support shaft 7 and drive upper roller 4 to tilt by 7 stress of support shaft, and then workpiece can be unloaded, it is complete
It at work pieces process operation, after work pieces process, turns off the power switch in time, cuts off external power supply.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of three roller differential variable curvature numerical control plate bending rolls, it is characterised in that：Including pedestal (1), mobile lower roll (15) and counterweight
Plate (16), the top setting organic frame (12) of the pedestal (1), the rack (12) is welded and fixed with the pedestal (1), described
The top of rack (12) is provided with fixed worm screw (6), and the fixed worm screw (6) is detachably connected with the rack (12), described
The left end of fixed worm screw (6) is provided with upper roller (4), and the upper roller (4) is detachably connected with the fixed worm screw (6), it is described on
The one end of roller (4) far from the fixed worm screw (6) is provided with overturn (3), and overturn (3) connect with the rack (12) rotation
It connects, lower roll (5) is provided with below the upper roller (4), the lower roll (5) is rotatablely connected with the rack (12), the lower roll
(5) adjusting screw rod (2) is provided with below, the adjusting screw rod (2) is detachably connected with the rack (12), the fixed snail
The one end of bar (6) far from the upper roller (4) is provided with support shaft (7), and the support shaft (7) and the fixed worm screw (6) are removable
Connection is unloaded, the right end of the support shaft (7) is provided with pressure roller device (8), and the pressure roller device (8) detachably connects with the rack (12)
It connecing, brake (11) is provided with below the support shaft (7), the brake (11) is detachably connected with the pedestal (1),
The right end of the brake (11) is provided with speed reducer (10), and the speed reducer (10) is fixedly connected with the pedestal (1), described
The right end of speed reducer (10) is provided with main motor (9), and the main motor (9) is detachably connected with the pedestal (1), the movement
Lower roll (15) is mounted on the inside of rack (12), and the mobile lower roll (15) is rotatablely connected with the rack (12), the movement
Roller set (14) is provided on the outside of lower roll (15), the roller set (14) is detachably connected with the mobile lower roll (15), the roller
The bottom end of set (14) is provided with hydraulic pump (13), and the hydraulic pump (13) is sequentially connected with the roller set (14), the Weight plate
(16) it is mounted on the inside of pressure roller device (8), the Weight plate (16) is slidably connected with the pressure roller device (8), the Weight plate
(16) top is provided with pressure roller shaft (19), and the pressure roller shaft (19) is welded and fixed with the Weight plate (16), the pressure roller shaft
(19) top is provided with handwheel (18), and the handwheel (18) is rotatablely connected with the pressure roller shaft (19), the pressure roller shaft (19)
Outside one end of handwheel (18) is provided with lifting motor (17), the lifting motor (17) passes with the pressure roller shaft (19)
Dynamic connection, and run through the lifting motor (17), the main motor (9), hydraulic pump (13) and lifting motor (17) with outside
Power supply is electrically connected.
2. a kind of three rollers differential variable curvature numerical control plate bending roll according to claim 1, it is characterised in that：The mobile lower roll
(15) it is sequentially connected by hydraulic stem with the hydraulic pump (13).
3. a kind of three rollers differential variable curvature numerical control plate bending roll according to claim 1, it is characterised in that：The Weight plate
(16) it is sequentially connected by the pressure roller shaft (19) with the lifting motor (17).
4. a kind of three rollers differential variable curvature numerical control plate bending roll according to claim 1, it is characterised in that：The upper roller (4)
It is rotatablely connected by connecting rod with the rack (12).
5. a kind of three rollers differential variable curvature numerical control plate bending roll according to claim 1, it is characterised in that：The support shaft
(7) it is fixedly connected by the fixed worm screw (6) with the upper roller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810415552.7A CN108607904B (en) | 2018-05-03 | 2018-05-03 | Three-roller differential variable-curvature numerical control plate bending machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810415552.7A CN108607904B (en) | 2018-05-03 | 2018-05-03 | Three-roller differential variable-curvature numerical control plate bending machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108607904A true CN108607904A (en) | 2018-10-02 |
| CN108607904B CN108607904B (en) | 2020-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810415552.7A Active CN108607904B (en) | 2018-05-03 | 2018-05-03 | Three-roller differential variable-curvature numerical control plate bending machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108607904B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054789A (en) * | 2019-12-10 | 2020-04-24 | 王涛 | Three-roller plate bending machine |
| CN112875374A (en) * | 2021-02-18 | 2021-06-01 | 李明明 | Compression roller transmission device of non-woven fabric for mask machine |
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|---|---|---|---|---|
| GB1085675A (en) * | 1965-06-04 | 1967-10-04 | Serge Van Tuijn | Device for bending sheet-like or elongated material along various radii |
| US4232540A (en) * | 1979-03-19 | 1980-11-11 | Cain Jack C | Controlled variable radius roll forming apparatus |
| CN203330196U (en) * | 2013-05-29 | 2013-12-11 | 镇江科美机械制造有限公司 | Wheel rim locking ring rolling machine |
| CN203356284U (en) * | 2013-10-15 | 2013-12-25 | 上海宝冶集团有限公司 | Small-sized veneer reeling machine |
| CN203556766U (en) * | 2013-07-27 | 2014-04-23 | 桐城运城制版有限公司 | Discharge device used for bending machine |
| CN204996875U (en) * | 2015-07-01 | 2016-01-27 | 南通超力卷板机制造有限公司 | Two roller differentials become camber numerical control veneer reeling machine |
| CN205629007U (en) * | 2016-01-12 | 2016-10-12 | 冯进器 | Novel self -interacting formula three rolls plate bending machine |
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| CN206392641U (en) * | 2016-12-20 | 2017-08-11 | 东莞市精驰自动化设备有限公司 | A kind of numerical control upper roller horizontal variable veneer reeling machine |
-
2018
- 2018-05-03 CN CN201810415552.7A patent/CN108607904B/en active Active
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| GB1085675A (en) * | 1965-06-04 | 1967-10-04 | Serge Van Tuijn | Device for bending sheet-like or elongated material along various radii |
| US4232540A (en) * | 1979-03-19 | 1980-11-11 | Cain Jack C | Controlled variable radius roll forming apparatus |
| CN203330196U (en) * | 2013-05-29 | 2013-12-11 | 镇江科美机械制造有限公司 | Wheel rim locking ring rolling machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054789A (en) * | 2019-12-10 | 2020-04-24 | 王涛 | Three-roller plate bending machine |
| CN112875374A (en) * | 2021-02-18 | 2021-06-01 | 李明明 | Compression roller transmission device of non-woven fabric for mask machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108607904B (en) | 2020-04-24 |
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Effective date of registration: 20200325 Address after: Li Bao Zhen Jiang Zhuang Cun Gong Ye Zhong Qu, Hai'an City, Nantong City, Jiangsu Province Applicant after: NANTONG KANGHAI MACHINE TOOL Co.,Ltd. Address before: 200032 Fudan University medical school, 138 Medical College Road, Xuhui District, Shanghai Applicant before: Xu Tong |
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| GR01 | Patent grant |