CN112444389A - Quality detection device for valve manufacturing - Google Patents
Quality detection device for valve manufacturing Download PDFInfo
- Publication number
- CN112444389A CN112444389A CN202011347161.XA CN202011347161A CN112444389A CN 112444389 A CN112444389 A CN 112444389A CN 202011347161 A CN202011347161 A CN 202011347161A CN 112444389 A CN112444389 A CN 112444389A
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- fixedly connected
- block
- plate
- sliding
- chutes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a quality detection device for valve manufacturing, which comprises an installation base, wherein one end of the installation base is fixedly connected with a limiting plate, a motor is fixedly arranged on the limiting plate, the other end of the installation base is fixedly connected with a fixing plate, one side of the fixing plate is fixedly provided with a cylinder, the other side of the fixing plate is fixedly provided with a fixing structure, the installation base is symmetrically provided with first chutes, guide shafts are fixedly connected in the first chutes, the installation base is provided with second chutes, the second chutes are positioned between the first chutes, threaded rods are rotatably arranged in the second chutes, one ends of the threaded rods are fixedly arranged at the output end of the motor, and sliding plates are arranged on the installation base in; compared with the prior art, can fix the valve fast through fixed knot constructs, be convenient for follow-up detect it, can improve operating personnel's work efficiency, and press from both sides the rubber pad on the tight piece and can prevent to press out the indentation or lead to valve connector deformation on the valve when pressing from both sides tight fixed, lead to the valve to become the defective products.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to a quality detection device for valve manufacturing.
Background
Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like. The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.
However, the existing valve detection device cannot be moved at will, and is complex to operate when the quality of the valve is detected, and a connector and the like need to be replaced, so that the working efficiency of an operator is low, and the detection efficiency is low.
Disclosure of Invention
The present invention is directed to a quality inspection apparatus for valve manufacturing, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a quality detection device for valve manufacturing comprises an installation base, wherein one end of the installation base is fixedly connected with a limiting plate, a motor is fixedly installed on the limiting plate, the other end of the installation base is fixedly connected with a fixing plate, an air cylinder is fixedly installed on one side of the fixing plate, a fixing structure is fixedly installed on the other side of the fixing plate, first chutes are symmetrically formed in the installation base, guide shafts are fixedly connected in the first chutes, second chutes are formed in the installation base, the second chutes are positioned between the first chutes, threaded rods are rotatably arranged in the second chutes, one end of each threaded rod is fixedly installed at the output end of the motor, sliding plates are slidably arranged on the installation base, the motor can drive the threaded rods to rotate, so that the sliding plates can be driven to move on the installation base, an air inlet is fixedly connected to one side of, the air inlet both ends fixedly connected with limit structure, slide opposite side fixedly connected with air inlet structure.
Preferably, the limiting structure comprises a limiting block, a fixed seat is fixedly connected to the bottom of the inner wall of the limiting block, a second spring is fixedly connected to the fixed seat, a connecting column is fixedly mounted on the second spring, second gear teeth are fixedly arranged on the connecting column, a key is fixedly connected to the connecting column, the key penetrates through the upper wall of the limiting block, a rotating shaft is rotatably arranged between the inner walls of the limiting block, a first gear is fixedly connected to the rotating shaft and is meshed with the second gear teeth, second gears are fixedly connected to two ends of the rotating shaft, a movable plate is arranged at the bottom of the second gear, a first gear tooth is fixedly arranged on the movable plate and is meshed with the second gear, a first connecting plate is fixedly connected to one end of the movable plate, a limiting plug is fixedly connected to the first connecting plate and penetrates through the limiting block and the side wall of the air inlet, the movable plate is characterized in that a second connecting plate is fixedly connected to the other end of the movable plate, a pair of first springs is fixedly connected to the second connecting plate, the other ends of the first springs are fixedly connected to the inner wall of the limiting block, the connecting column can be driven to move downwards by pressing down a key, the first springs can drive the first gears meshed with the second gears to rotate, a rotating shaft can be driven to rotate, the second gears can be driven to rotate, the movable plate can be moved, the first springs are compressed, the limiting plugs retract, the air inlet pipeline can be detached, replacement of gaskets on the air inlet is facilitated, aging caused by long-time use of the gaskets is avoided, and accordingly the detection result of the detection.
Preferably, the moving plate is fixedly connected with a convex block, the side wall of the limiting block is provided with a guide groove, the convex block is arranged in the guide groove in a sliding mode, and the convex block can play a role in guiding when the moving plate moves.
Preferably, the inlet structure is including linking flange, flange fixed mounting is on the slide lateral wall, flange bottom fixedly connected with fixed sleeve, a plurality of fixed blocks of fixedly connected with on the fixed sleeve lateral wall, fixed block bottom fixedly connected with telescopic link, the cover is equipped with the third spring on the telescopic link, the first sealing washer of telescopic link one end fixedly connected with, fixed sleeve bottom fixedly connected with seal port, first sealing washer movable sleeve is established on the seal port, third spring one end is supported on first sealing washer lateral wall, and the third spring can play the cushioning effect when slide removal speed is too fast, avoids inlet structure and valve connector to take place to collide with, leads to the valve damage to scrap.
Preferably, the fixing structure comprises a connecting seat, the connecting seat is fixedly connected to a fixing plate, a plurality of limiting holes are formed in the connecting seat, connecting rods are movably arranged in the limiting holes, one end of each connecting rod is fixedly connected with a connecting block, a movable rod is arranged on one side of the connecting block, the connecting block is hinged to the movable rod, one end of the movable rod is fixedly connected to the output end of the air cylinder, a plurality of supporting blocks are fixedly connected to the inner wall of the connecting seat, fixing rings are fixedly connected between the supporting blocks, the movable rods are movably inserted in the fixing rings, clamping rods are fixedly welded to one ends of the connecting rods, movable blocks are hinged to the clamping rods, a second sealing ring is fixedly connected to one side of the connecting seat, the movable rods can be driven to move through the air cylinder, so that the connecting rods hinged to the movable rods, so that the clamping blocks will fix the position of the valve.
Preferably, the last fixedly connected with of movable block presss from both sides tight piece, the last fixedly connected with rubber pad of pressing from both sides tight piece, the rubber pad can avoid the clamp force too big to lead to pressing out the indentation on the valve connector or lead to the valve connector deformation to form for the defective products.
Preferably, a plurality of mounting blocks are fixedly connected to the side wall of the mounting base, positioning holes are formed in the mounting blocks, mounting bolts are inserted into the positioning holes, and the mounting base can be detached and is convenient for moving the detection device.
Preferably, a first sliding block is arranged in the first sliding groove in a sliding mode, a guide hole is formed in the first sliding block, the guide shaft is inserted in the guide hole in a sliding mode, a second sliding block is arranged in the second sliding groove in a sliding mode, a threaded hole is formed in the second sliding block, the threaded rod is inserted in the threaded hole in a threaded mode, and the first sliding block and the second sliding block are fixedly connected to the bottom of the sliding plate.
The valve can be quickly fixed through the fixing structure, so that the valve can be conveniently detected subsequently, the working efficiency of operators can be improved, and the rubber pad on the clamping block can prevent the valve from being a defective product due to indentation or deformation of a valve connecting port when the valve is clamped and fixed;
the air inlet pipeline can be conveniently maintained regularly through the limiting structure, the air leakage caused by long-time use is avoided, the check result of the valve is influenced, and compared with threaded connection, the valve has smaller wear and longer service life;
through the third spring and the first sealing washer on the air inlet structure, the phenomenon that the air inlet structure and the valve connecting port collide with each other due to the fact that the moving speed of the sliding plate is too high can be avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the structure of the present invention;
FIG. 3 is a schematic view of a limiting structure of the present invention;
FIG. 4 is a schematic view of the air intake structure of the present invention;
FIG. 5 is a schematic view of a fastening structure of the present invention;
FIG. 6 is a top view of the fixing structure of the present invention.
In the figure: 1. installing a base; 2. a limiting structure; 3. an air intake structure; 4. a fixed structure; 11. mounting blocks; 111. positioning holes; 12. a motor; 13. a limiting plate; 14. a slide plate; 141. an air inlet; 15. a fixing plate; 16. a cylinder; 17. a first chute; 171. a guide shaft; 18. a second chute; 181. a threaded rod; 21. a fixed seat; 22. moving the plate; 221. a bump; 222. a first gear tooth; 23. a first connecting plate; 231. a limit plug; 24. connecting columns; 241. pressing a key; 242. a second gear tooth; 25. a rotating shaft; 251. a first gear; 252. a second gear; 26. a second connecting plate; 261. a first spring; 27. a second spring; 28. a limiting block; 31. a first seal ring; 32. fixing the sleeve; 33. a connecting flange; 34. a fixed block; 35. a telescopic rod; 351. a third spring; 41. a connecting seat; 411. a limiting hole; 42. a movable block; 421. a clamping block; 422. a rubber pad; 43. a second seal ring; 44. a clamping lever; 45. a movable rod; 451. connecting blocks; 46. a support block; 461. a fixing ring; 47. a connecting rod.
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.
Referring to fig. 1-6, the present invention provides a technical solution: a quality detection device for valve manufacturing comprises an installation base 1, one end of the installation base 1 is fixedly connected with a limit plate 13, a motor 12 is fixedly arranged on the limit plate 13, the other end of the installation base 1 is fixedly connected with a fixed plate 15, one side of the fixed plate 15 is fixedly provided with an air cylinder 16, the other side of the fixed plate 15 is fixedly provided with a fixed structure 4, the installation base 1 is symmetrically provided with first sliding grooves 17, the first sliding grooves 17 are internally and fixedly connected with guide shafts 171, the installation base 1 is provided with second sliding grooves 18, the second sliding grooves 18 are positioned between the first sliding grooves 17, a threaded rod 181 is rotatably arranged in the second sliding grooves 18, one end of the threaded rod 181 is fixedly arranged on the output end of the motor 12, the installation base 1 is provided with a sliding plate 14 in a sliding manner, the motor 12 can drive the threaded rod 181 to rotate, so that the sliding, the two ends of the air inlet 141 are fixedly connected with the limiting structures 2, and the other side of the sliding plate 14 is fixedly connected with the air inlet structure 3.
The limiting structure 2 comprises a limiting block 28, a fixed base 21 is fixedly connected to the bottom of the inner wall of the limiting block 28, a second spring 27 is fixedly connected to the fixed base 21, a connecting column 24 is fixedly installed on the second spring 27, second gear teeth 242 are fixedly arranged on the connecting column 24, a key 241 is fixedly connected to the connecting column 24, the key 241 penetrates through the upper wall of the limiting block 28, a rotating shaft 25 is rotatably arranged between the inner walls of the limiting block 28, a first gear 251 is fixedly connected to the rotating shaft 25, the first gear 251 is meshed with the second gear teeth 242, second gears 252 are fixedly connected to two ends of the rotating shaft 25, a moving plate 22 is arranged at the bottom of the second gear 252, a first gear tooth 222 is fixedly arranged on the moving plate 22, the first gear tooth 222 is meshed with the second gear 252, a first connecting plate 23 is fixedly connected to one end of the moving plate 22, a limiting plug 231, the other end of the movable plate 22 is fixedly connected with the second connecting plate 26, the pair of first springs 261 of the second connecting plate 26 are fixedly connected, the other end of the first spring 261 is fixedly connected to the inner wall of the limiting block 28, the connecting column 24 can be driven to move downwards by pressing the key 241, the first gear 251 meshed with the second gear teeth 242 can be driven to rotate, the rotating shaft 25 can be driven to rotate, the second gear 252 can be driven to rotate, the movable plate 22 can be moved, the first springs 261 are compressed, the limiting plug 231 can retract, the air inlet pipeline can be disassembled, the gasket on the air inlet 141 can be replaced conveniently, the gasket is prevented from being aged due to long-time use, and the detection result of the detection device is influenced.
The moving plate 22 is fixedly connected with a projection 221, the side wall of the limit block 28 is provided with a guide groove, the projection 221 is slidably arranged in the guide groove, and the projection 221 can play a guiding role when the moving plate 22 moves.
Air inlet structure 3 is including linking flange 33, flange 33 fixed mounting is on slide 14 lateral wall, flange 33 bottom fixedly connected with fixed sleeve 32, a plurality of fixed blocks of fixedly connected with 34 on the fixed sleeve 32 lateral wall, fixed block 34 bottom fixedly connected with telescopic link 35, the cover is equipped with third spring 351 on the telescopic link 35, the first sealing washer 31 of telescopic link 35 one end fixedly connected with, the fixedly connected with seal port in fixed sleeve 32 bottom, first sealing washer 31 movable sleeve is established on the seal port, third spring 351 one end is supported on first sealing washer 31 lateral wall, third spring 351 can play the cushioning effect when slide 14 translation rate is too fast, avoid air inlet structure 3 and valve connector to take place to collide with, lead to the valve damage to scrap.
The fixing structure 4 comprises a connecting seat 41, the connecting seat 41 is fixedly connected to the fixing plate 15, a plurality of limiting holes 411 are formed in the connecting seat 41, connecting rods 47 are movably arranged in the limiting holes 411, one end of each connecting rod 47 is fixedly connected with a connecting block 451, one side of each connecting block 451 is provided with a movable rod 45, each connecting block 451 is hinged to the corresponding movable rod 45, one end of each movable rod 45 is fixedly connected to the output end of the corresponding air cylinder 16, a plurality of supporting blocks 46 are fixedly connected to the inner wall of the connecting seat 41, fixing rings 461 are fixedly connected among the supporting blocks 46, each movable rod 45 is movably inserted into the corresponding fixing ring 461, one end of each connecting rod 47 is fixedly welded with a corresponding clamping rod 44, each clamping rod 44 is hinged with a movable block 42, a second sealing ring 43 is fixedly connected to one side of the connecting seat 41, the clamping bar 44 can be brought to move inside the box so that the clamping block 421 can fix the position of the valve.
The last fixedly connected with of movable block 42 presss from both sides tight piece 421, presss from both sides fixedly connected with rubber pad 422 on the tight piece 421, and rubber pad 422 can avoid the clamp force too big to lead to pressing out the indentation on the valve connector or lead to the valve connector deformation to form the defective products.
A plurality of installation blocks 11 are fixedly connected to the side wall of the installation base 1, positioning holes 111 are formed in the installation blocks 11, installation bolts are inserted into the positioning holes 111, and the installation base 1 can be detached and is convenient for moving the detection device.
First slide block is arranged in first chute 17 in a sliding manner, a guide hole is formed in the first slide block, guide shaft 171 is inserted in the guide hole in a sliding manner, second slide block is arranged in second chute 18 in a sliding manner, a threaded hole is formed in the second slide block, threaded rod 181 is inserted in the threaded hole in a threaded manner, and first slide block and second slide block are fixedly connected to the bottom of sliding plate 14.
The invention can drive the movable rod 45 to move through the cylinder 16, so as to drive the connecting rod 47 hinged on the movable rod 45 to move in the limiting hole 411 and drive the clamping rod 44 to move inside the box, so that the clamping block 421 can fix the position of the valve, and the rubber pad 422 can avoid that the clamping force is too large to cause the indentation on the valve connecting port or cause the deformation of the valve connecting port to form a defective product, the fixed structure 4 can quickly limit and fix the valve to improve the working efficiency of detection, then the motor 12 can drive the threaded rod 181 to rotate to drive the sliding plate 14 to move on the installation base 1, the third spring 351 and the first sealing ring 31 on the air inlet structure 3 can avoid the collision between the air inlet structure 3 and the valve caused by the too fast moving speed of the sliding plate 14, so that the valve can not be used, and finally the limiting structure 2 can be convenient for disassembling and installing the air inlet pipeline, be convenient for maintain air inlet 141, avoid long-time use to lead to the packing ring ageing and lead to the condition influence testing result that leaks gas appearing, it is littleer to compare threaded connection wear, has longer life, and installation base 1 can dismantle, is convenient for remove detection device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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 (8)
1. A quality detection device for valve manufacturing, includes installation base (1), its characterized in that: the mounting base is characterized in that one end of the mounting base (1) is fixedly connected with a limiting plate (13), a motor (12) is fixedly mounted on the limiting plate (13), the other end of the mounting base (1) is fixedly connected with a fixing plate (15), one side of the fixing plate (15) is fixedly mounted with a cylinder (16), the other side of the fixing plate (15) is fixedly mounted with a fixing structure (4), the mounting base (1) is symmetrically provided with first chutes (17), the first chutes (17) are internally and fixedly connected with guide shafts (171), the mounting base (1) is provided with second chutes (18), the second chutes (18) are positioned between the first chutes (17), a threaded rod (181) is rotatably arranged in the second chute (18), one end of the threaded rod (181) is fixedly mounted on the output end of the motor (12), and a sliding plate (14) is slidably arranged on the mounting base (1), slide (14) one side fixedly connected with air inlet (141), air inlet (141) both ends fixedly connected with limit structure (2), slide (14) opposite side fixedly connected with inlet structure (3).
2. A quality inspection apparatus for use in valve manufacturing according to claim 1, wherein: the limiting structure (2) comprises a limiting block (28), a fixing seat (21) is fixedly connected to the bottom of the inner wall of the limiting block (28), a second spring (27) is fixedly connected to the fixing seat (21), a connecting column (24) is fixedly mounted on the second spring (27), second gear teeth (242) are fixedly arranged on the connecting column (24), a key (241) is fixedly connected to the connecting column (24), the key (241) penetrates through the upper wall of the limiting block (28), a rotating shaft (25) is rotatably arranged between the inner walls of the limiting block (28), a first gear (251) is fixedly connected to the rotating shaft (25), the first gear (251) is meshed with the second gear teeth (242), second gears (252) are fixedly connected to the two ends of the rotating shaft (25), a moving plate (22) is arranged at the bottom of the second gear (252), and a first gear tooth (222) is fixedly arranged on the moving plate (22), first teeth of a cogwheel (222) and second gear (252) meshing, first connecting plate (23) of moving plate (22) one end fixedly connected with, fixedly connected with limit plug (231) on first connecting plate (23), limit plug (231) run through stopper (28) and air inlet (141) lateral wall, moving plate (22) other end fixedly connected with second connecting plate (26), a pair of first spring (261) of second connecting plate (26) fixedly connected with, first spring (261) other end fixed connection is on stopper (28) inner wall.
3. A quality inspection apparatus for valve manufacturing according to claim 2, wherein: the movable plate (22) is fixedly connected with a convex block (221), the side wall of the limiting block (28) is provided with a guide groove, and the convex block (221) is arranged in the guide groove in a sliding mode.
4. A quality inspection apparatus for use in valve manufacturing according to claim 1, wherein: air inlet structure (3) are including linking flange (33), flange (33) fixed mounting is on slide (14) lateral wall, flange (33) bottom fixedly connected with fixing sleeve (32), a plurality of fixed blocks of fixedly connected with (34) on fixing sleeve (32) lateral wall, fixed block (34) bottom fixedly connected with telescopic link (35), the cover is equipped with third spring (351) on telescopic link (35), the first sealing washer (31) of telescopic link (35) one end fixedly connected with, the fixedly connected with sealing port in fixing sleeve (32) bottom, first sealing washer (31) movable sleeve is established on the sealing port, third spring (351) one end is supported on first sealing washer (31) lateral wall.
5. A quality inspection apparatus for use in valve manufacturing according to claim 1, wherein: the fixing structure (4) comprises a connecting seat (41), the connecting seat (41) is fixedly connected onto a fixing plate (15), a plurality of limiting holes (411) are formed in the connecting seat (41), a connecting rod (47) is movably arranged in each limiting hole (411), one end of the connecting rod (47) is fixedly connected with a connecting block (451), a movable rod (45) is arranged on one side of the connecting block (451), the connecting block (451) is hinged onto the movable rod (45), one end of the movable rod (45) is fixedly connected onto the output end of the air cylinder (16), a plurality of supporting blocks (46) are fixedly connected onto the inner wall of the connecting seat (41), fixing rings (461) are fixedly connected among the supporting blocks (46), the movable rod (45) is movably inserted into the fixing rings (461), a clamping rod (44) is fixedly welded at one end of the connecting rod (47), and a movable block (42) is hinged onto the clamping rod (, and one side of the connecting seat (41) is fixedly connected with a second sealing ring (43).
6. A quality detection device for valve manufacturing according to claim 5, wherein: the movable block (42) is fixedly connected with a clamping block (421), and the clamping block (421) is fixedly connected with a rubber pad (422).
7. A quality inspection apparatus for use in valve manufacturing according to claim 1, wherein: the mounting base is characterized in that a plurality of mounting blocks (11) are fixedly connected to the side wall of the mounting base (1), positioning holes (111) are formed in the mounting blocks (11), and mounting bolts are inserted into the positioning holes (111).
8. A quality inspection apparatus for use in valve manufacturing according to claim 1, wherein: the sliding type sliding device is characterized in that a first sliding block is arranged in the first sliding groove (17) in a sliding mode, a guide hole is formed in the first sliding block, the guide shaft (171) is inserted in the guide hole in a sliding mode, a second sliding block is arranged in the second sliding groove (18) in a sliding mode, a threaded hole is formed in the second sliding block, a threaded rod (181) is inserted in the threaded hole in a threaded mode, and the first sliding block and the second sliding block are fixedly connected to the bottom of the sliding plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011347161.XA CN112444389A (en) | 2020-11-26 | 2020-11-26 | Quality detection device for valve manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011347161.XA CN112444389A (en) | 2020-11-26 | 2020-11-26 | Quality detection device for valve manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112444389A true CN112444389A (en) | 2021-03-05 |
Family
ID=74738370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011347161.XA Withdrawn CN112444389A (en) | 2020-11-26 | 2020-11-26 | Quality detection device for valve manufacturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112444389A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367784A (en) * | 2023-12-08 | 2024-01-09 | 湖南大用环保科技有限公司 | Multi-item valve performance comprehensive test system |
-
2020
- 2020-11-26 CN CN202011347161.XA patent/CN112444389A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117367784A (en) * | 2023-12-08 | 2024-01-09 | 湖南大用环保科技有限公司 | Multi-item valve performance comprehensive test system |
| CN117367784B (en) * | 2023-12-08 | 2024-03-01 | 湖南大用环保科技有限公司 | Multi-item valve performance comprehensive test system |
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Application publication date: 20210305 |
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| WW01 | Invention patent application withdrawn after publication |