CN220156649U - Winding device for high-power voice coil - Google Patents

Winding device for high-power voice coil Download PDF

Info

Publication number
CN220156649U
CN220156649U CN202222852647.XU CN202222852647U CN220156649U CN 220156649 U CN220156649 U CN 220156649U CN 202222852647 U CN202222852647 U CN 202222852647U CN 220156649 U CN220156649 U CN 220156649U
Authority
CN
China
Prior art keywords
plate
voice coil
fixed
groove
motor
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
CN202222852647.XU
Other languages
Chinese (zh)
Inventor
朱军琴
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.)
Henan Xinyilai Plastic And Rubber Technology Co ltd
Original Assignee
Henan Xinyilai Plastic And Rubber 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 Henan Xinyilai Plastic And Rubber Technology Co ltd filed Critical Henan Xinyilai Plastic And Rubber Technology Co ltd
Priority to CN202222852647.XU priority Critical patent/CN220156649U/en
Application granted granted Critical
Publication of CN220156649U publication Critical patent/CN220156649U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

The utility model provides a winding device for a high-power voice coil, which comprises a bottom plate, two vertical rods, a motor, a displacement plate, a fixed block and a stabilizing plate, wherein the top of the bottom plate is sequentially and fixedly connected with the vertical rods, the fixed block and the stabilizing plate, the displacement plate is slidably connected between the two vertical rods, the motor is fixedly arranged at the top of the displacement plate, the output end of the motor extends to the bottom of the displacement plate and is fixedly connected with a rotating plate, a bidirectional screw rod is rotatably connected to the bottom of the rotating plate, and an adjusting component is arranged on the outer side of the bidirectional screw rod. Through above-mentioned technical scheme, solved among the prior art because current clamping assembly generally fixes through the bolt, and can't adjust the size of different voice coil skeleton internal diameters to make the voice coil loudspeaker voice coil product of processing single, greatly increased the limitation of device, and complex operation has reduced work efficiency, through the bolt fastening, leads to easily smooth silk simultaneously, and then is unfavorable for practical application's problem.

Description

Winding device for high-power voice coil
Technical Field
The utility model relates to the technical field of voice coil winding devices, in particular to a winding device for a high-power voice coil.
Background
The current when carrying out the coiling to the voice coil loudspeaker voice coil processing, generally through the fixed voice coil loudspeaker voice coil skeleton of clamping component, then carry out the wire winding operation through wire winding component, but current clamping component is fixed through the bolt generally, and can't adjust the size of different voice coil loudspeaker voice coil skeletons internal diameter to make the voice coil loudspeaker voice coil product of processing single, greatly increased the limitation of device, and complex operation has reduced work efficiency, simultaneously through bolt fastening, lead to easily smooth silk, and then be unfavorable for practical application, for this reason, propose a coiling mechanism for high-power voice coil loudspeaker voice coil.
Disclosure of Invention
Accordingly, it is desirable to provide a winding device for a high-power voice coil, which solves or alleviates the technical problems of the prior art, and at least provides a beneficial choice.
The technical scheme of the embodiment of the utility model is realized as follows: including bottom plate, two pole settings, motor, displacement board, fixed block and stabilizer plate, bottom plate top fixedly connected with pole setting, fixed block and stabilizer plate in proper order, displacement board sliding connection is between two pole settings, and motor fixed mounting is at the top of displacement board, the output of motor extends to the bottom and the fixedly connected with revolving plate of displacement board, the bottom of revolving plate rotates and is connected with two-way lead screw, the outside of two-way lead screw is provided with adjusting part, two-way lead screw is used for driving adjusting part and opens, the inside of fixed block and stabilizer plate is provided with tensioning assembly.
Further preferred is: the adjusting component comprises two fixing plates, two rubber strips, two sliding blocks, four connecting rods, two unfolding plates and two through grooves, wherein the two fixing plates are respectively and fixedly connected to the bottom of the rotating plate and located at two sides of the bidirectional screw rod, the two through grooves are respectively formed in the fixing plates, the two sliding blocks are respectively and threadedly connected to the outer sides of the bidirectional screw rod, two sides of the two sliding blocks are respectively and slidably connected with one side, close to the fixing plates, of the two sliding blocks, four connecting rods are respectively and rotatably connected to two sides of the two sliding blocks, one ends, far away from the sliding blocks, of the two connecting rods are respectively and rotatably connected with the unfolding plates, and the two rubber strips are respectively and fixedly connected to one side, far away from the unfolding plates, of the two adjacent connecting rods;
further preferred is: the tensioning assembly comprises a second containing groove, two strip-shaped grooves, a threaded rod, a moving block and a tensioning roller, wherein the second containing groove is formed in the fixed block, the two strip-shaped grooves are formed in two sides of the fixed block and are communicated with the second containing groove respectively, the moving block is slidably connected in the second containing groove, the threaded rod is rotatably connected to the top of the moving block, one end, far away from the moving block, of the threaded rod extends to the top of the fixed block, and the tensioning roller is rotatably connected in the moving block;
further preferred is: the tensioning assembly further comprises a convex groove, a sliding plate, springs, two mounting plates and an auxiliary roller, wherein the convex groove is formed in the stabilizing plate, the sliding plate is connected between two sides of the inner wall of the convex groove in a sliding mode, the springs are fixedly connected between the bottom of the sliding plate and the bottom of the inner wall of the convex groove, the two mounting plates are fixedly connected at two ends of the top of the sliding plate, and the auxiliary roller is connected between the two mounting plates in a rotating mode;
further preferred is: two brush drums are rotatably connected between the fixed block and the vertical rod at the top of the bottom plate, a brush is arranged on the outer side of each brush drum, and brackets are fixedly connected to four corners of the bottom plate;
further preferred is: two first holding grooves are formed in the displacement plate, two rollers are rotatably connected between two sides of the inner wall of each first holding groove, one side, close to each roller, of each roller is in rolling connection with the outer side of a corresponding upright rod, an electric telescopic rod is fixedly installed on the top of the bottom plate and on one side of the upright rod, and the tops of piston rods of the two electric telescopic rods are fixedly connected with two ends of the bottom of the displacement plate respectively;
further preferred is: the utility model discloses a motor, including pole setting, bottom plate, electric telescopic rod, motor, feed roll, bottom plate, the one end fixedly connected with U template of pole setting is kept away from to the bottom plate, it is connected with the feed roll to rotate between the top and the bottom of U template inner wall, one side fixed mounting of bottom plate has the controller, electric telescopic rod and motor all with controller electric connection.
By adopting the technical scheme, the embodiment of the utility model has the following advantages:
when carrying out the wire winding to high-power voice coil loudspeaker voice coil, with voice coil loudspeaker voice coil skeleton cover in adjusting part's outside, then rotate two-way lead screw to drive adjusting part and open, and then can fix voice coil loudspeaker voice coil skeleton, and can adjust adjusting part open size according to the size because of voice coil loudspeaker voice coil skeleton internal diameter, make the limitation of device reduce greatly, can process not unidimensional voice coil loudspeaker voice coil, avoided bringing the trouble of smooth silk easily through the bolt fastening simultaneously, and easy operation, it is consuming time short, improved work efficiency, be favorable to actual application more.
The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will become apparent by reference to the drawings and the following detailed description.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a side cross-sectional view of the present utility model;
FIG. 3 is a front cross-sectional view of the present utility model;
fig. 4 is an enlarged view of the utility model at a in fig. 2.
Reference numerals: 1. a bottom plate; 2. a vertical rod; 3. a displacement plate; 4. a motor; 5. a first container; 6. a roller; 7. an electric telescopic rod; 8. a bracket; 9. a rotating plate; 10. a two-way screw rod; 11. a slide block; 12. a fixing plate; 13. a through groove; 14. a connecting rod; 15. unfolding the plate; 16. a rubber strip; 17. a brush cylinder; 18. a fixed block; 19. a second accommodating groove; 20. a bar-shaped groove; 21. a threaded rod; 22. a moving block; 23. a tension roller; 24. a stabilizing plate; 25. a convex groove; 26. a slide plate; 27. a mounting plate; 28. an auxiliary roller; 29. a spring; 30. a U-shaped plate; 31. a feed roller; 32. and a controller.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1-4, the embodiment of the utility model provides a winding device for a high-power voice coil, which comprises a base plate 1, two upright posts 2, a motor 4, a displacement plate 3, a fixed block 18 and a stabilizing plate 24, wherein the upright posts 2, the fixed block 18 and the stabilizing plate 24 are sequentially and fixedly connected to the top of the base plate 1, the displacement plate 3 is slidably connected between the two upright posts 2, the motor 4 is fixedly arranged at the top of the displacement plate 3, the output end of the motor 4 extends to the bottom of the displacement plate 3 and is fixedly connected with a rotating plate 9, the bottom of the rotating plate 9 is rotatably connected with a bidirectional screw rod 10, an adjusting component is arranged on the outer side of the bidirectional screw rod 10, the bidirectional screw rod 10 is used for driving the adjusting component to open, and a tensioning component is arranged inside the fixed block 18 and the stabilizing plate 24.
In this embodiment, when carrying out the wire winding to high-power voice coil loudspeaker voice coil, with voice coil loudspeaker voice coil skeleton cover in adjusting part's outside, then rotate two-way lead screw 10 to drive adjusting part and open, and then can fix voice coil loudspeaker voice coil skeleton, and can adjust adjusting part open size according to the size because of voice coil loudspeaker voice coil skeleton internal diameter, make the limitation of device reduce greatly, can process not unidimensional voice coil loudspeaker voice coil, avoided simultaneously bringing the trouble of smooth silk easily through the bolt fastening, and easy operation, it is consuming time short, work efficiency has been improved, more be favorable to actual application.
Example 2
As shown in fig. 1-4, based on the same concept as the above embodiment 1, this embodiment further proposes a winding device for a high-power voice coil, the adjusting assembly includes two fixing plates 12, two rubber strips 16, two sliders 11, four connecting rods 14, two unfolding plates 15 and two through grooves 13, the two fixing plates 12 are respectively fixedly connected at the bottom of the rotating plate 9 and are located at two sides of the bidirectional screw 10, the two through grooves 13 are respectively opened in the fixing plates 12, the two sliders 11 are respectively in threaded connection at the outer sides of the bidirectional screw 10, two sides of the two sliders 11 are respectively in sliding connection with one side close to the fixing plates 12, four connecting rods 14 are respectively connected at two sides of the two sliders 11 in a rotating manner and are respectively penetrated through the grooves 13 at one ends far away from the sliders 11, one ends of the two adjacent connecting rods 14 far away from the bidirectional screw 10 are rotatably connected with unfolding plates 15, the two rubber strips 16 are respectively fixedly connected at one sides far away from the unfolding plates 15, the bidirectional screw 10 is rotated, thereby driving the two sliders 11 to be mutually far away from each other, and further driving the two unfolding plates 15 through the connecting rods 14 to be in a sliding manner, the two adjacent connecting rods 15 are in a sliding manner, the two rolling plates 15 are separated from the two opposite sides of the two adjacent to each other, and the two adjacent connecting rods are separated from the two adjacent one another, and are separated from the two voice coil, and are easily separated from each other, and are easily and have a friction effect and are increased, and have the effect that the voice coil is achieved.
The tensioning assembly comprises a second containing groove 19, two strip-shaped grooves 20, a threaded rod 21, a moving block 22 and a tensioning roller 23, the second containing groove 19 is formed in the fixed block 18, the two strip-shaped grooves 20 are formed in two sides of the fixed block 18 and are communicated with the second containing groove 19, the moving block 22 is slidably connected in the second containing groove 19, the threaded rod 21 is rotatably connected to the top of the moving block 22 and is far away from one end of the moving block 22 to extend to the top of the fixed block 18, the tensioning roller 23 is rotatably connected in the moving block 22, the threaded rod 21 is rotated to drive the moving block 22 to move, and then the copper wire is kept in a tensioning state according to the tensioning degree of the copper wire during winding, so that the winding effect and the quality of a finished product are improved.
Wherein, tensioning assembly still includes protruding type groove 25, slide 26, spring 29, two mounting panels 27 and auxiliary roller 28, protruding type groove 25 is seted up in the inside of stabilizing plate 24, slide 26 sliding connection is between the both sides of protruding type groove 25 inner wall, spring 29 fixed connection is between the bottom of slide 26 and the bottom of protruding type groove 25 inner wall, two mounting panels 27 fixed connection is at the both ends at slide 26 top, auxiliary roller 28 rotates to be connected between two mounting panels 27, through setting up auxiliary roller 28 in the inside of protruding type groove 25, and set up spring 29 in the bottom of slide 26, thereby can carry out the tensioning to the copper line according to spring 29's elasticity.
Wherein, the top of bottom plate 1 just is located and rotates between fixed block 18 and the pole setting 2 and be connected with two brush barrels 17, and the outside of brush barrels 17 is provided with the brush, and the equal fixedly connected with support 8 in four corners of bottom plate 1 bottom can brush special self-adhesive in the outside of brush barrels 17 through setting up brush barrels 17 to can improve the bearing power of finished product.
Wherein, two first holding grooves 5 have been seted up to the inside of displacement board 3, all rotate between the both sides of first holding groove 5 inner wall and be connected with two gyro wheels 6, the outside roll connection of two gyro wheels 6 equal and corresponding pole setting 2 in one side that is close to mutually, the top of bottom plate 1 and the one side that is located pole setting 2 are equal fixed mounting have electric telescopic handle 7, the top of two electric telescopic handle 7 piston rods respectively with the both ends fixed connection of displacement board 3 bottom, through setting up the outside roll connection of two gyro wheels 6 and pole setting 2, thereby improve the stability of displacement board 3 in the removal in-process, drive displacement board 3 through setting up electric telescopic handle 7 simultaneously and remove, thereby make the copper line can evenly wind on the voice coil loudspeaker voice coil skeleton.
Wherein, the one end fixedly connected with U template 30 of pole setting 2 is kept away from to bottom plate 1, rotates between the top and the bottom of U template 30 inner wall and is connected with feed roll 31, and one side fixed mounting of bottom plate 1 has controller 32, and electric telescopic handle 7 and motor 4 all with controller 32 electric connection, through setting up controller 32 to can control electric telescopic handle 7 and motor 4, conveniently carry out the wire winding operation
In this embodiment, the specific present utility model is as follows: when the high-power voice coil is wound, the voice coil framework is sleeved on the outer side of the adjusting component, then the bidirectional screw rod 10 is rotated, so that the two sliding blocks 11 are driven to be away from each other, and meanwhile, the two unfolding plates 15 are driven to be unfolded through the connecting rod 14, so that the rubber strips 16 on the outer sides of the unfolding plates 15 are in contact with the inner wall of the voice coil framework, and the voice coil framework is fixed;
then one end of the copper wire sequentially passes through the convex groove 25, the strip-shaped groove 20, the second containing groove 19 and the two hairbrush drums 17 and is fixed on the outer side of the voice coil framework, the threaded rod 21 is rotated, so that the moving block 22 is driven to move, the copper wire of the copper wire is kept in a tensioning state, a special self-adhesive glue is brushed on the outer side of the hairbrush drum 17, the rotating plate 9 is driven to rotate through the motor 4, the voice coil framework is driven to rotate, and meanwhile, the displacement plate 3 is driven to move up and down through the electric telescopic rod 7, so that the copper wire is uniformly wound on the outer side of the voice coil framework, and winding operation is finished.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (7)

1. The utility model provides a winding device for high-power voice coil loudspeaker voice coil, includes bottom plate (1), two pole setting (2), motor (4), displacement board (3), fixed block (18) and stabilizer plate (24), its characterized in that: the utility model discloses a motor, including bottom plate (1), fixed block (18), stabilizing plate (24), displacement board (3) sliding connection is between two pole settings (2), and motor (4) fixed mounting is at the top of displacement board (3), the output of motor (4) extends to the bottom and the fixedly connected with revolving plate (9) of displacement board (3), the bottom rotation of revolving plate (9) is connected with two-way lead screw (10), the outside of two-way lead screw (10) is provided with adjusting part, two-way lead screw (10) are used for driving adjusting part and open, the inside of fixed block (18) and stabilizing plate (24) is provided with tensioning assembly.
2. A winding apparatus for a high power voice coil as claimed in claim 1, wherein: the utility model provides an adjusting part, including two fixed plates (12), two rubber strips (16), two slider (11), four connecting rods (14), two expansion board (15) and two logical groove (13), two fixed plate (12) are fixed connection respectively in the bottom of revolving plate (9) and are located the both sides of two-way lead screw (10), two logical groove (13) are seted up respectively in the inside of fixed plate (12), two slider (11) are threaded connection respectively in the outside of two-way lead screw (10), two the both sides of slider (11) all with one side sliding connection that fixed plate (12) are close to mutually, four connecting rod (14) are rotated respectively and are connected in the both sides of two slider (11) and are kept away from the one end of slider (11) and all run through groove (13), and two adjacent rotation between the one end that two bidirectional lead screw (10) were kept away from to connecting rod (14) is connected with expansion board (15), two rubber strips (16) are fixed connection respectively in expansion board (15) one side that keeps away from mutually.
3. A winding apparatus for a high power voice coil as claimed in claim 1, wherein: the tensioning assembly comprises a second containing groove (19), two strip-shaped grooves (20), a threaded rod (21), a moving block (22) and a tensioning roller (23), wherein the second containing groove (19) is formed in the fixing block (18), the two strip-shaped grooves (20) are formed in two sides of the fixing block (18) respectively and are communicated with the second containing groove (19), the moving block (22) is slidably connected in the second containing groove (19), the threaded rod (21) is rotatably connected at the top of the moving block (22) and is far away from one end of the moving block (22) to extend to the top of the fixing block (18), and the tensioning roller (23) is rotatably connected in the moving block (22).
4. A winding apparatus for a high power voice coil as claimed in claim 1, wherein: the tensioning assembly further comprises a convex groove (25), a sliding plate (26), springs (29), two mounting plates (27) and an auxiliary roller (28), wherein the convex groove (25) is formed in the stabilizing plate (24), the sliding plate (26) is slidably connected between two sides of the inner wall of the convex groove (25), the springs (29) are fixedly connected between the bottom of the sliding plate (26) and the bottom of the inner wall of the convex groove (25), the two mounting plates (27) are fixedly connected at two ends of the top of the sliding plate (26), and the auxiliary roller (28) is rotatably connected between the two mounting plates (27).
5. A winding apparatus for a high power voice coil as claimed in claim 1, wherein: the top of bottom plate (1) just is located and rotates between fixed block (18) and pole setting (2) and be connected with two brush pot (17), the outside of brush pot (17) is provided with the brush, the four corners of bottom plate (1) bottom is all fixedly connected with support (8).
6. A winding apparatus for a high power voice coil as claimed in claim 1, wherein: two first holding grooves (5) have been seted up to the inside of displacement board (3), all rotate between the both sides of first holding groove (5) inner wall and be connected with two gyro wheels (6), two one side that gyro wheel (6) are close to mutually all with the outside roll connection of corresponding pole setting (2), the top of bottom plate (1) just is located one side of pole setting (2) and all fixed mounting has electric telescopic handle (7), two the top of electric telescopic handle (7) piston rod respectively with the both ends fixed connection of displacement board (3) bottom.
7. A winding apparatus for a high power voice coil as claimed in claim 6, wherein: one end that pole setting (2) was kept away from to bottom plate (1) is fixedly connected with U template (30), rotate between the top and the bottom of U template (30) inner wall and be connected with feed roll (31), one side fixed mounting of bottom plate (1) has controller (32), electric telescopic handle (7) and motor (4) all with controller (32) electric connection.
CN202222852647.XU 2022-10-26 2022-10-26 Winding device for high-power voice coil Active CN220156649U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222852647.XU CN220156649U (en) 2022-10-26 2022-10-26 Winding device for high-power voice coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222852647.XU CN220156649U (en) 2022-10-26 2022-10-26 Winding device for high-power voice coil

Publications (1)

Publication Number Publication Date
CN220156649U true CN220156649U (en) 2023-12-08

Family

ID=89014504

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222852647.XU Active CN220156649U (en) 2022-10-26 2022-10-26 Winding device for high-power voice coil

Country Status (1)

Country Link
CN (1) CN220156649U (en)

Similar Documents

Publication Publication Date Title
CN209777914U (en) Cable winding device
CN210052641U (en) Winding device for transformer iron core
CN208378067U (en) A kind of transformer coil copper wire rewinding device facilitating adjusting
CN220156649U (en) Winding device for high-power voice coil
CN206580356U (en) The rolling-up mechanism of composite coating machine
CN209322096U (en) A kind of coil of strip unwinding device
CN208561307U (en) A kind of take-up and pay-off device of improvement
CN208976891U (en) A kind of end cover of automobile generator drilling equipment
CN220182405U (en) Wire winding device
CN213230798U (en) Conveniently change coiling mechanism of non-woven fabrics wind-up roll
CN216851701U (en) Winding machine with multiphase winding function
CN218983013U (en) Wire unwinding equipment for spring processing
CN211419112U (en) Winding frame for producing optical fiber cables
CN220412263U (en) Sponge rubber winding bracket
CN214031226U (en) Yarn winding machine with automatic adjusting function
CN219155704U (en) Plate turnover machine with structure for adjusting clamping size
CN209988871U (en) Yarn winding device
CN220033529U (en) Automatic finishing machine adjustment mechanism
CN220334268U (en) Cloth collecting device for dyeing and finishing
CN210944257U (en) Orderly winding device of pure cotton yarn
CN219823248U (en) Wire harness winding and arranging device
CN217577813U (en) Coiling mechanism is used in special type welding wire manufacturing
CN221140641U (en) Elastic band separator
CN216945462U (en) Cloth clamping structure of scroll machine
CN216945614U (en) Winding machine with anti-breaking structure for data line processing

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant