CN219967508U - Furnace tube outer wall rust removing device - Google Patents
Furnace tube outer wall rust removing device Download PDFInfo
- Publication number
- CN219967508U CN219967508U CN202321196337.5U CN202321196337U CN219967508U CN 219967508 U CN219967508 U CN 219967508U CN 202321196337 U CN202321196337 U CN 202321196337U CN 219967508 U CN219967508 U CN 219967508U
- Authority
- CN
- China
- Prior art keywords
- wall
- furnace tube
- groove
- rust
- rust removing
- 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
Links
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000000428 dust Substances 0.000 claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 10
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 238000005498 polishing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to the technical field of furnace tube outer wall rust removal, in particular to a furnace tube outer wall rust removal device, which comprises a workbench and a furnace tube, wherein a pushing component is arranged on the upper surface of the workbench, one side of the pushing component is provided with a horizontally placed furnace tube, the outer wall of one end of the furnace tube is contacted with the pushing component, the pushing component is used for pushing the furnace tube, a dust collector is arranged below the workbench, one side of the upper surface of the workbench is fixedly connected with an operation shell, a first through groove is formed in the operation shell, a U-shaped supporting block is fixedly connected to the position, located at the first through groove, of the outer wall of one side of the operation shell, which is far away from the pushing component, a rust removal component is arranged at one side, which is close to the U-shaped supporting block, of the first through groove, the other end of the furnace tube penetrates through the operation shell and the rust removal component, the rust removal component is driven to rotate by the arranged linkage component, and the furnace tube is pushed by the arranged pushing component, so that the rust removal component can remove rust on the outer wall of the furnace tube in an omnibearing way, the polishing effect of the furnace tube is improved, and the working strength is reduced.
Description
Technical Field
The utility model relates to the technical field of rust removal of outer walls of furnace tubes, in particular to a rust removal device for the outer walls of the furnace tubes.
Background
The application of the metal product brings great convenience to the life of people, however, the metal product of steel is exposed in the air and is easy to be oxidized by the air to rust, the service life of the metal product is reduced, the use of the metal product is seriously affected due to the generation of rust, various methods are searched for in order to solve the problem of oxidizing and rusting of the metal product, the problem of rusting can be fundamentally solved from the aspect of isolating air for spraying paint or plating, but the cost of the method is higher, and the problem of rusting frequently occurs for the steel pipe product with lower requirements, so that the rust removing work of the steel pipe needs to be completed by means of a rust removing device.
The existing rust removing device can polish and remove rust on the outer wall of the furnace tube through a hand-held rust remover of a worker, but the polishing efficiency is too low, the rust removal on the outer wall of the furnace tube is uneven, and therefore the polishing efficiency of the furnace tube is reduced while the workload is increased.
Disclosure of Invention
The utility model aims to provide a rust removing device for the outer wall of a furnace tube, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a boiler tube outer wall rust cleaning device, includes workstation and boiler tube, the workstation upper surface is equipped with pushing component, pushing component one side is equipped with the boiler tube that the level was placed, boiler tube one end outer wall contacts with pushing component, pushing component is used for promoting the boiler tube, the workstation below is equipped with the dust catcher, workstation upper surface one side fixedly connected with operation casing, be equipped with first logical groove in the operation casing, operation casing keeps away from pushing component one side outer wall and is located first logical groove department fixedly connected with U type riding block, one side that is close to U type riding block in the first logical groove is equipped with rust cleaning component, the boiler tube other end runs through operation casing and rust cleaning component, boiler tube outer wall contacts with U type riding block U type groove, rust cleaning component is used for carrying out the linkage to the boiler tube surface, the cavity has all been seted up to the operation casing in being located first logical groove both sides, two all be equipped with the linkage component in the cavity, two the output of assembly all is used for driving rust cleaning component and rotates.
Preferably, the rust removing assembly comprises a fixed ring, a rust removing steel wire is arranged on the inner wall of the fixed ring, an outer channel tooth is sleeved on the outer wall of the fixed ring, a second through groove communicated with the cavity is formed in the position of the first through groove located at the outer channel tooth, and the outer channel tooth penetrates through the second through groove and extends into the cavity.
Preferably, the fixed ring is fixedly connected with the rust removing steel wire, and the outer track teeth are fixedly connected with the fixed ring.
Preferably, the two linkage components comprise rotating motors, the two rotating motors are connected to the inner wall of the cavity through bolts, the output ends of the rotating motors are connected with rotating rods in a flange mode, the outer walls of one sides, far away from the rotating motors, of the rotating rods are fixedly connected with rotating wheels, and the rotating wheels are meshed with outer road teeth arranged in the rust removing components.
Preferably, the pushing assembly comprises an electric sliding rail, a sliding block is connected to the electric sliding rail in a sliding mode, a pneumatic cylinder is arranged on the upper surface of the sliding block, a fixing plate is connected to the telescopic end of the pneumatic cylinder through bolts, a fixing block is fixedly arranged on one side, close to the operation shell, of the fixing plate, and a U-shaped groove is formed in one end, far away from the fixing plate, of the fixing block.
Preferably, the electric slide rail is fixedly connected with the upper surface of the workbench, one end of the electric slide rail is contacted with the outer wall of the operation shell, and the sliding block is connected with the pneumatic cylinder through a bolt.
Preferably, the outer wall of one end of the furnace tube contacts with the U-shaped groove, the outer wall of the other end of the furnace tube passes through the first through groove to contact with the rust removing steel wire, the bottom of the operation shell is provided with a dust collection opening, the inside of the workbench is provided with a communicated dust collection groove below the dust collection opening, and the dust collection end of the dust collector is communicated with the dust collection groove through a pipeline.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the rust removing assembly is rotated through the arranged linkage assembly, and the furnace tube is pushed through the arranged pushing assembly, so that the rust removing assembly can remove rust on the outer wall of the furnace tube in all directions, the polishing efficiency of the furnace tube is increased, and the working strength is reduced.
Drawings
FIG. 1 is a side view of the overall structure of the present utility model;
FIG. 2 is a plan view of the overall cross-section of the present utility model;
FIG. 3 is a cross-sectional view of the rust removing assembly and linkage assembly of the present utility model;
FIG. 4 is a side view of the push assembly of the present utility model;
fig. 5 is an enlarged view of the utility model at a.
In the figure: 1. a work table; 101. placing a box; 102. a furnace tube; 103. a dust collection groove; 2. an operation housing; 201. a first through groove; 202. a second through slot; 203. a dust collection port; 204. a cavity; 205. u-shaped supporting blocks; 3. a dust collector; 4. a pushing assembly; 401. an electric slide rail; 402. a slide block; 403. a pneumatic cylinder; 404. a fixing plate; 405. a U-shaped groove; 406. a fixed block; 5. a linkage assembly; 501. a rotating electric machine; 502. a rotating lever; 503. a rotating wheel; 6. a rust removing component; 601. a fixing ring; 602. outer road teeth; 603. derusting steel wire.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-5, a furnace tube outer wall rust removing device comprises a workbench 1 and a furnace tube 102, wherein a pushing component 4 is arranged on the upper surface of the workbench 1, the pushing component 4 comprises an electric sliding rail 401, a sliding block 402 is connected to the electric sliding rail 401 in a sliding way, a pneumatic cylinder 403 is arranged on the upper surface of the sliding block 402, the initial state of the pneumatic cylinder 403 is in a completely contracted state, a fixing plate 404 is connected to a telescopic end bolt of the pneumatic cylinder 403, a fixing block 406 is fixedly arranged on one side of the fixing plate 404 close to an operation shell 2, a U-shaped groove 405 is arranged at one end of the fixing block 406 far away from the fixing plate 404, the electric sliding rail 401 is fixedly connected with the upper surface of the workbench 1, one end of the electric sliding rail 401 is contacted with the outer wall of the operation shell 2, the sliding block 402 is connected with the pneumatic cylinder 403 by a bolt, a furnace tube 102 horizontally arranged on one side of the pushing component 4, one end of the furnace tube 102 is contacted with the pushing component 4, the pushing component 4 is used for pushing the furnace tube 102, a dust collector 3 is arranged below the workbench 1, an operation shell 2 is fixedly connected to one side of the upper surface of the workbench 1, a dust collection opening 203 is formed in the bottom of the operation shell 2, a communicated dust collection groove 103 is formed in the workbench 1 and positioned below the dust collection opening 203, a dust collection bag is arranged in the dust collection groove 103, the polished rust is attached to the dust collection bag, the dust collection end of the dust collector 3 is communicated with the dust collection groove 103 through a pipeline, a placing box 101 is fixedly connected to one side of the workbench 1 close to the operation shell 2, a first through groove 201 is formed in the operation shell 2, a U-shaped supporting block 205 is fixedly connected to the outer wall of one side of the operation shell 2 far away from the pushing component 4 and positioned at the first through groove 201, a rust removing component 6 is arranged on one side of the first through groove 201 close to the U-shaped supporting block 205, the rust removing component 6 comprises a fixing ring 601, a rust removing steel wire 603 is arranged on the inner wall of the fixing ring 601, an outer wall of the fixing ring 601 is sleeved with an outer channel tooth 602, the first through groove 201 is located at the position of the outer channel tooth 602 and is provided with a second through groove 202 communicated with the cavity 204, the outer channel tooth 602 passes through the second through groove 202 and extends into the cavity 204, the fixed ring 601 is fixedly connected with a rust removing steel wire 603, the outer channel tooth 602 is fixedly connected with the fixed ring 601, the other end of the furnace tube 102 penetrates through the operating shell 2 and the rust removing assembly 6, the outer wall of the furnace tube 102 is contacted with the U-shaped groove 205U-shaped groove, the rust removing assembly 6 is used for removing rust on the surface of the furnace tube 102, the cavity 204 is formed in the operating shell 2 and is located at two sides of the first through groove 201, the linkage assembly 5 is arranged in the cavity 204, the linkage assembly 5 comprises a rotating motor 501, the rotating motor 501 is connected onto the inner wall of the cavity 204 through bolts, the output end of the rotating motor 501 is connected with a rotating rod 502 through bolts, one side outer wall of the rotating rod 502 far away from the rotating motor 501 is fixedly sleeved with a rotating wheel 503, the rotating wheel 503 is meshed with the outer channel tooth 602 arranged in the rust removing assembly 6, and the output end of the linkage assembly 5 is used for driving the rust removing assembly 6 to rotate.
When derusting the outer wall of the furnace tube 102, a worker places one end of the furnace tube 102 on a derusting steel wire 603 in the first through groove 201, the worker supports the furnace tube 102 until the outer wall of one end of the furnace tube 102 contacts with the U-shaped part of the U-shaped support block 205, at the moment, the pneumatic cylinder 403 is started by an external controller, the pneumatic cylinder 403 is started to work, the telescopic end of the working pneumatic cylinder 403 drives a fixed plate 404 to move upwards, the fixed plate 404 which moves upwards drives a fixed block 406 and the U-shaped groove 405 to move upwards until the U-shaped groove 405 contacts with the outer wall of the furnace tube 102, at the moment, the worker starts a linkage assembly 5 and a pushing assembly 4 by the external controller, a rotary motor 501 in the linkage assembly 5 starts to work, the output end of the rotary motor 501 drives a rotary rod 502 to rotate, the rotary rod 502 drives a rotary wheel 503 to rotate by meshing connection, and the rotary wheel 503 drives an external gear 602 to rotate, the rotating outer channel teeth 602 drive the rust removing steel wires 603 to rotate through the fixed ring 601, the linkage assembly 5 drives the rust removing assembly 6 to rotate, the rust removing steel wires 603 in the rust removing assembly 6 rotate the outer wall of the furnace tube 102 to remove rust, meanwhile, the electric sliding rail 401 in the pushing assembly 4 works, the working electric sliding rail 401 drives the sliding block 402 to move towards the operating shell 2, the moving sliding block 402 drives the pneumatic cylinder 403 to move, the pneumatic cylinder 403 drives the fixed plate 404 to move, the fixed plate 404 drives the fixed block 406 to move, the moving fixed block 406 pushes the furnace tube 102 to move towards the rust removing assembly 6, therefore, in the process of pushing the furnace tube 102 towards the rust removing assembly 6 through the pushing assembly 4, the outer wall of the furnace tube 102 can remove rust in all directions, meanwhile, the dust collector 3 is started to work by workers, the dust collector 3 adopts the prior art, the dust collection end of the working dust collector 3 generates suction force to the dust collection groove 103 through a pipeline, the dust collection groove 103 sucks rust residues after rust removal into a dust collection cloth bag in the dust collection groove 103 through the dust collection opening 203, so that the rust residues generated after rust removal are collected into the dust collection groove 103 through the dust collector 3, the rust residues are effectively prevented from polluting the air, and when the rust removal of the outer wall of the furnace tube 102 is completed, the furnace tube 102 is pushed into the feeding placement box 101 through the pushing component 4.
The working flow of the utility model is as follows: when the outer wall of the furnace tube 102 is derusted, a worker places one end of the furnace tube 102 on a derusting steel wire 603 in the first through groove 201, the worker supports the furnace tube 102 until the outer wall of one end of the furnace tube 102 is contacted with the U-shaped part of the U-shaped support block 205, at this time, the pneumatic cylinder 403 is started to operate through the external controller, the telescopic end of the pneumatic cylinder 403 drives the fixed plate 404 to move upwards, the fixed plate 404 moves the fixed block 406 and the U-shaped groove 405 to move upwards until the U-shaped groove 405 is contacted with the outer wall of the furnace tube 102, at this time, the worker starts the linkage assembly 5 and the pushing assembly 4 through the external controller, the rotary motor 501 in the linkage assembly 5 starts to operate, the output end of the rotary motor 501 drives the rotary rod 502 to rotate, the rotary wheel 503 drives the external channel tooth 602 to rotate through meshed connection, the rotary external channel tooth 602 drives the derusting steel wire 603 to rotate through the fixed ring 601, meanwhile, the electric slide 401 in the operating component 4 drives the slide block 402 to move upwards to the operating shell 2, the moving slide block 402 drives the movable block 403 to move upwards, until the U-shaped groove 405 contacts the outer wall of the furnace tube 102, at this time, the rotary motor 501 starts to operate through the rotary motor 501, the rotary motor 501 drives the rotary wheel 503 to rotate, the rotary wheel 503 to rotate through meshed connection, the rotary wheel 503 drives the rotary wheel 602, the rotary external channel tooth 602 rotates the rotary channel tooth, the electric slide rail 401 drives the electric slide rail 401 to drive the working, the working and the working slide rail 401, and the working slide block 403 of the working and the working of the working slide block 403, and the working slide block of the working and the working rail 403.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a boiler tube outer wall rust cleaning device, includes workstation (1) and boiler tube (102), its characterized in that: the utility model discloses a furnace tube furnace, including work bench (1), push subassembly (4) upper surface is equipped with furnace tube (102) that push subassembly (4) one side is equipped with the level and places, furnace tube (102) one end outer wall is contacted with push subassembly (4), push subassembly (4) are used for promoting furnace tube (102), work bench (1) below is equipped with dust catcher (3), work bench (1) upper surface one side fixedly connected with operation casing (2), be equipped with first logical groove (201) in operation casing (2), operation casing (2) keep away from push subassembly (4) one side outer wall and be located first logical groove (201) department fixedly connected with U type bracket (205), one side that is close to U type bracket (205) in first logical groove (201) is equipped with rust cleaning subassembly (6), the other end runs through operation casing (2) and rust cleaning subassembly (6), furnace tube (102) outer wall and U type bracket (205) U type groove are contacted, rust cleaning subassembly (6) are used for carrying out rust cleaning to furnace tube (102) surface, operation casing (2) are located first logical groove (201) department fixedly connected with U type bracket (205), both sides (204) are equipped with cavity (204) and are equipped with in two sides linkage cavity (204), the output ends of the two linkage assemblies (5) are used for driving the rust removing assemblies (6) to rotate.
2. The furnace tube outer wall rust removing device according to claim 1, wherein: the rust removal assembly (6) comprises a fixing ring (601), a rust removal steel wire (603) is arranged on the inner wall of the fixing ring (601), an outer channel tooth (602) is sleeved on the outer wall of the fixing ring (601), a second through groove (202) communicated with the cavity (204) is formed in the position of the first through groove (201) located at the outer channel tooth (602), and the outer channel tooth (602) penetrates through the second through groove (202) and extends into the cavity (204).
3. The furnace tube outer wall rust removing device according to claim 2, wherein: the fixed ring (601) is fixedly connected with the rust removing steel wire (603), and the outer track teeth (602) are fixedly connected with the fixed ring (601).
4. The furnace tube outer wall rust removing device according to claim 1, wherein: the two linkage components (5) comprise rotating motors (501), the two rotating motors (501) are all connected to the inner wall of the cavity (204) through bolts, the two output ends of the rotating motors (501) are all connected with rotating rods (502) in a flange mode, the other ends of the rotating rods (502) are connected with the inner wall of the cavity (204) in a rotating mode, the two rotating rods (502) are fixedly sleeved with rotating wheels (503) on the outer wall of one side, far away from the rotating motors (501), of each rotating rod, and the two rotating wheels (503) are connected with outer track teeth (602) arranged in the rust removing component (6) in a meshed mode.
5. The furnace tube outer wall rust removing device according to claim 1, wherein: the pushing assembly (4) comprises an electric sliding rail (401), a sliding block (402) is connected to the electric sliding rail (401) in a sliding mode, a pneumatic cylinder (403) is arranged on the upper surface of the sliding block (402), a fixing plate (404) is connected to the telescopic end of the pneumatic cylinder (403) through bolts, a fixing block (406) is fixedly arranged on one side, close to the operation shell (2), of the fixing plate (404), and a U-shaped groove (405) is formed in one end, far away from the fixing plate (404), of the fixing block (406).
6. The furnace tube outer wall rust removing device according to claim 5, wherein: the electric sliding rail (401) is fixedly connected with the upper surface of the workbench (1), one end of the electric sliding rail (401) is contacted with the outer wall of the operation shell (2), and the sliding block (402) is connected with the pneumatic cylinder (403) through bolts.
7. The furnace tube outer wall rust removing device according to claim 1, wherein: the dust collection device is characterized in that a placing box (101) is fixedly connected to one side, close to the operation shell (2), of the workbench (1), a dust collection opening (203) is formed in the bottom of the operation shell (2), a dust collection groove (103) which is communicated with the workbench (1) is formed in the workbench (1) and located below the dust collection opening (203), and a dust collection end of the dust collector (3) is communicated with the dust collection groove (103) through a pipeline.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202321196337.5U CN219967508U (en) | 2023-05-17 | 2023-05-17 | Furnace tube outer wall rust removing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202321196337.5U CN219967508U (en) | 2023-05-17 | 2023-05-17 | Furnace tube outer wall rust removing device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN219967508U true CN219967508U (en) | 2023-11-07 |
Family
ID=88581208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202321196337.5U Active CN219967508U (en) | 2023-05-17 | 2023-05-17 | Furnace tube outer wall rust removing device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN219967508U (en) |
-
2023
- 2023-05-17 CN CN202321196337.5U patent/CN219967508U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111014110B (en) | Motor dust and oil dirt cleaning equipment | |
CN108968788B (en) | Intelligent glass wiping robot | |
CN109877683A (en) | A kind of building steel tube polishing derusting device | |
CN210829983U (en) | Portable hydraulic power unit convenient to clearance greasy dirt | |
CN109848779B (en) | Wall polisher for building | |
CN111113229A (en) | Double-station type environment-friendly pipeline outer wall rust removing equipment for building field | |
CN219967508U (en) | Furnace tube outer wall rust removing device | |
CN214440315U (en) | Powder conveying and cleaning device for powder spraying room | |
CN211388224U (en) | Surface rust removal equipment for channel steel structure | |
CN212497154U (en) | Polishing mechanism in polishing machine for hardware production | |
CN211866052U (en) | Metal stamping workpiece manufacture equipment of portable dust absorption | |
CN219945259U (en) | Rotating device of horizontal machining center | |
CN110125750B (en) | Semi-automatic wall grinding device | |
CN213895229U (en) | Mechanical grating decontamination equipment | |
CN211762343U (en) | Aerated concrete bottom plate cleaning device | |
CN211565386U (en) | Deburring equipment for part machining | |
CN218837233U (en) | Channel steel rust cleaning mechanism | |
CN220178984U (en) | Steel pipe rust cleaning device | |
CN218904080U (en) | Slag inclusion welding platform is prevented to machinery spare part | |
CN218049430U (en) | Communication is dust collector for computer lab with raising and lowering ability | |
CN219005651U (en) | Dustproof effectual polishing equipment | |
CN215432978U (en) | Conveniently clear up wear-resisting material processing of sweeps and use lathe | |
CN210632616U (en) | Dust removal device of bushing rotary wear testing machine | |
CN216442322U (en) | Detachable polishing head and die table cleaning equipment | |
CN212947142U (en) | Steel pipe end internal surface clearance recovery unit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |