CN112516610A - Temperature controller of concentration tower - Google Patents
Temperature controller of concentration tower Download PDFInfo
- Publication number
- CN112516610A CN112516610A CN202110034919.2A CN202110034919A CN112516610A CN 112516610 A CN112516610 A CN 112516610A CN 202110034919 A CN202110034919 A CN 202110034919A CN 112516610 A CN112516610 A CN 112516610A
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- shaft
- temperature controller
- gear
- display screen
- main body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0082—Regulation; Control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a concentration tower temperature controller which comprises a temperature controller main body, a display screen and a motor, wherein one end of the temperature controller main body is provided with a first connecting shaft, a first cylindrical gear and a movable door are respectively arranged on the surface of the first connecting shaft from outside to inside, one end of the first cylindrical gear is meshed with a second cylindrical gear, a second connecting shaft is arranged in the center of the second cylindrical gear, a wire connecting wheel is arranged at the middle end of the second connecting shaft, a connecting wire is arranged on the surface of the wire connecting wheel, and a first cleaning brush is arranged at the other end of the connecting wire. This concentration tower temperature controller through the setting of dodge gate, has made things convenient for and has protected the display screen, thereby avoids the display screen to expose for a long time and lead to taking place the phenomenon of damage outside, drives first clearance brush through the connecting wire and slides when the dodge gate is opened simultaneously for first clearance brush carries out defogging work to the display screen surface, avoids the display screen surface to adsorb the influence normal use of mist.
Description
Technical Field
The invention relates to the technical field of concentration towers, in particular to a temperature controller of a concentration tower.
Background
The concentration tower is a device for dehydrating dilute nitric acid in the tower to prepare concentrated nitric acid, along with the development of science and technology, the process technology of the concentration tower is continuously improved, and the temperature of the concentration tower needs to be controlled in the working process, so that a temperature controller of the concentration tower is needed, but the existing temperature controller of the concentration tower generally has the following problems in use;
1. the existing temperature controller is not beneficial to protection, so that a display screen on the surface of the existing temperature controller is easy to crack after long-time use, or is not beneficial to defogging work on the display screen after protection, so that when the existing temperature controller is opened for protection use, the surface of the existing temperature controller is easy to adsorb mist due to the temperature difference between the display screen and the outside, and the normal work of the display screen is influenced;
2. be unfavorable for dispelling the heat for the inside electrical components of temperature controller is the phenomenon that the high temperature leads to taking place to damage after long-time the use, thereby has reduced holistic life, and the too high temperature of electrical components can make the circuit take place the spontaneous combustion simultaneously, leads to arousing the conflagration, and then has reduced holistic security.
We have therefore proposed a thickening column thermostat to address the problems set out above.
Disclosure of Invention
The invention aims to provide a concentration tower temperature controller, which solves the problems that the conventional temperature controller provided by the background technology is not beneficial to protection, so that a display screen on the surface of the temperature controller is easy to crack after long-time use, or is not beneficial to defogging work on the display screen after protection, when the temperature controller is opened for use, the surface of the temperature controller is easy to adsorb mist due to the temperature difference between the display screen and the outside, so that the normal work of the display screen is influenced, the heat dissipation is not facilitated, and the phenomenon that electric elements in the temperature controller are damaged due to overhigh temperature after long-time use is caused, so that the service life of the whole temperature controller is shortened, and meanwhile, spontaneous combustion of a circuit is caused due to overhigh temperature of the electric elements, so that fire disasters are caused, and the safety of.
In order to achieve the purpose, the invention provides the following technical scheme: a concentration tower temperature controller comprises a temperature controller main body, a display screen and a motor, wherein one end of the temperature controller main body is provided with a first connecting shaft, the surface of the first connecting shaft is provided with a first cylindrical gear and a movable door from outside to inside respectively, one end of the first cylindrical gear is meshed with a second cylindrical gear, the center of the second cylindrical gear is provided with a second connecting shaft, the middle end of the second connecting shaft is provided with a wire connecting wheel, the surface of the wire connecting wheel is provided with a connecting wire, the other end of the connecting wire is provided with a first cleaning brush, two ends of the first cleaning brush are provided with lantern rings, a supporting rod is arranged inside the lantern rings, the surface of the supporting rod is sleeved with a telescopic spring, the upper end surface of the temperature controller main body is provided with the display screen, the lower end surface of the temperature controller main body is provided with a vent, and one end of the movable door far away, a volute spring is sleeved on the surface of the fixed shaft, a positioning rod is sleeved on the surface of the volute spring, a fixed block is connected to one end, away from the volute spring, of the positioning rod, the fixed block is fixed to the outer side of one end of the temperature controller main body, a motor is arranged inside the lower end of the temperature controller main body, a driving shaft is arranged inside the motor, a driving gear is arranged at one end, extending out of the motor, of the driving shaft, a driven gear is meshed with the surface of the driving gear, a first supporting shaft is arranged at the center of the driven gear, a fixed gear ring is meshed with the surface of the driven gear, a first bevel gear penetrates through the planet carrier at one end, away from the driven gear, of the first supporting shaft and is connected with the first bevel gear, a second bevel gear is meshed with the surface of the first bevel gear, a, and the other end of the second supporting shaft is provided with a second cleaning brush, and the middle end of the second supporting shaft is provided with radiating blades.
Preferably, be sliding connection between lantern ring and the bracing piece, and the bracing piece symmetry is provided with two to the interval between two bracing pieces is greater than the width of display screen.
Preferably, the lantern ring forms extending structure through expanding spring and bracing piece, and the lantern ring symmetry sets up the upper and lower both ends at first cleaning brush.
Preferably, the positioning rod and the fixed shaft form a rotating structure through a volute spiral spring, one end of the positioning rod is in an L shape in a plan view, and the inner side of one end of the L shape of the positioning rod is attached to the surface of the fixed block.
Preferably, the driven gear is disposed at an equal angle with respect to an axial center line of the driving gear, and the driven gear and the driving gear form a rotating structure through the fixed ring gear.
Preferably, the driven gear is rotationally connected with the planet carrier through the first support shaft, and the planet carrier is in a cross shape in a plan view.
Preferably, the first support shaft and the second support shaft are vertically distributed, and the second support shaft and the first support shaft form a linkage structure through a first bevel gear and a second bevel gear.
Preferably, the second support shaft is connected with one end of the positioning shaft in a rotating mode, the other end of the positioning shaft is fixedly connected with the planet carrier, and the positioning shaft and the driven gears are consistent in number.
Preferably, the second cleaning brush is attached to the inner side of the ventilation opening, and the ventilation opening is of a mesh structure.
Compared with the prior art, the invention has the beneficial effects that: the temperature controller of the concentration tower;
1. through the arrangement of the movable door, the display screen is conveniently protected, the phenomenon that the display screen is damaged due to long-term exposure is avoided, and meanwhile, when the movable door is opened, the first cleaning brush is driven to slide through the connecting wire, so that the first cleaning brush performs defogging work on the surface of the display screen, and the situation that the normal use is influenced by the adsorption of mist on the surface of the display screen is avoided;
2. through the setting of fixed ring gear for when the driving gear drove driven gear rotation, driven gear revolves around the driving gear simultaneously, thereby is favorable to follow-up radiator vane to revolve around the axle center of driving gear when the rotation, is favorable to having improved holistic radiating effect, avoids the damage phenomenon that the inside high temperature of integrated device leads to.
Drawings
FIG. 1 is a schematic view of the overall front cross-sectional structure of the present invention;
FIG. 2 is a schematic view of the front view of the connecting structure between the driving shaft and the driving gear;
FIG. 3 is a schematic view of a top-view connection structure of a driving gear and a driven gear of the present invention;
FIG. 4 is a schematic top view of the connection structure of the first support shaft and the planet carrier according to the present invention;
FIG. 5 is a schematic view of the overall top cross-sectional structure of the present invention;
FIG. 6 is an enlarged view of the structure at A in FIG. 5 according to the present invention;
FIG. 7 is an enlarged view of the structure at B in FIG. 5 according to the present invention;
fig. 8 is a schematic view of an elevation connection structure of the first connecting shaft and the first cylindrical gear according to the present invention.
In the figure: 1. a temperature controller main body; 2. a first connecting shaft; 3. a first cylindrical gear; 4. a movable door; 5. a second cylindrical gear; 6. a second connecting shaft; 7. a wire connecting wheel; 8. a connecting wire; 9. a first cleaning brush; 10. a collar; 11. a support bar; 12. a tension spring; 13. a display screen; 14. a fixed shaft; 15. a volute spiral spring; 16. positioning a rod; 17. a fixed block; 18. a motor; 19. a drive shaft; 20. a driving gear; 21. a driven gear; 22. a first support shaft; 23. fixing the gear ring; 24. a planet carrier; 25. a first bevel gear; 26. a second bevel gear; 27. positioning the shaft; 28. a second support shaft; 29. a second cleaning brush; 30. a heat dissipating fin; 31. and a vent.
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. 1-8, the present invention provides a technical solution: a concentration tower temperature controller comprises a temperature controller main body 1, a display screen 13 and a motor 18, wherein one end of the temperature controller main body 1 is provided with a first connecting shaft 2, a first cylindrical gear 3 and a movable door 4 are respectively arranged on the surface of the first connecting shaft 2 from outside to inside, one end of the first cylindrical gear 3 is meshed with a second cylindrical gear 5, a second connecting shaft 6 is arranged at the center of the second cylindrical gear 5, a wire connecting wheel 7 is arranged at the middle end of the second connecting shaft 6, a connecting wire 8 is arranged on the surface of the wire connecting wheel 7, a first cleaning brush 9 is arranged at the other end of the connecting wire 8, two ends of the first cleaning brush 9 are provided with lantern rings 10, a supporting rod 11 is arranged inside the lantern rings 10, a telescopic spring 12 is sleeved on the surface of the supporting rod 11, the display screen 13 is arranged on the upper end surface of the temperature controller main body 1, and a vent 31 is arranged on the, a fixed shaft 14 is arranged at one end of the movable door 4 far away from the first connecting shaft 2, a volute spring 15 is sleeved on the surface of the fixed shaft 14, a positioning rod 16 is sleeved on the surface of the volute spring 15, a fixed block 17 is connected at one end of the positioning rod 16 far away from the volute spring 15, the fixed block 17 is fixed on the outer side of one end of the temperature controller main body 1, a motor 18 is arranged inside the lower end of the temperature controller main body 1, a driving shaft 19 is arranged inside the motor 18, a driving gear 20 is arranged at one end of the driving shaft 19 extending out of the motor 18, a driven gear 21 is meshed on the surface of the driving gear 20, a first supporting shaft 22 is arranged at the center of the driven gear 21, a fixed gear ring 23 is meshed on the surface of the driven gear 21, one end of the first supporting shaft 22 far away from the driven gear 21 penetrates, the top surface of the planet carrier 24 is provided with a positioning shaft 27, the upper end of the positioning shaft 27 is provided with a second supporting shaft 28, one end of the second supporting shaft 28 is connected with the second bevel gear 26, the other end of the second supporting shaft 28 is provided with a second cleaning brush 29, and the middle end of the second supporting shaft 28 is provided with a heat radiating blade 30.
Be sliding connection between lantern ring 10 and the bracing piece 11, and the bracing piece 11 symmetry is provided with two to the interval between two bracing pieces 11 is greater than the width of display screen 13, has made things convenient for stable the sliding that slides on bracing piece 11 of lantern ring 10.
The lantern ring 10 forms a telescopic structure through the telescopic spring 12 and the supporting rod 11, the lantern ring 10 is symmetrically arranged at the upper end and the lower end of the first cleaning brush 9, and the telescopic spring 12 drives the first cleaning brush 9 to reset and slide through the lantern ring 10.
The positioning rod 16 and the fixed shaft 14 form a rotating structure through the volute spiral spring 15, one end of the positioning rod 16 is in an L shape in a depression mode, the inner side of one end of the L shape of the positioning rod 16 is attached to the surface of the fixed block 17, the volute spiral spring 15 drives the positioning rod 16 to reset and rotate through elasticity, and therefore the positioning rod 16 and the fixed block 17 are located through one end of the L shape of the positioning rod 16.
The driven gear 21 is distributed at equal angles with respect to the axial center line of the driving gear 20, and the driven gear 21 and the driving gear 20 form a rotating structure through the fixed gear ring 23, so that the driving gear 20 drives the driven gear 21 to rotate, and meanwhile, the driven gear 21 revolves around the driving gear 20.
Driven gear 21 is connected for rotating between first support shaft 22 and planet carrier 24, and planet carrier 24 overlook for "ten" font, has guaranteed that driven gear 21 can effectually carry out the rotation, has made things convenient for driven gear 21 to drive planet carrier 24 through first support shaft 22 to rotate simultaneously.
The first support shaft 22 and the second support shaft 28 are vertically distributed, and the second support shaft 28 and the first support shaft 22 form a linkage structure through the first bevel gear 25 and the second bevel gear 26, so that the first support shaft 22 is convenient to rotate, and the second support shaft 28 is driven to rotate through the first bevel gear 25 and the second bevel gear 26.
Second back shaft 28 is connected for rotating with the one end of location axle 27, and is fixed connection between the other end of location axle 27 and planet carrier 24 to quantity between location axle 27 and the driven gear 21 is unanimous, has made things convenient for location axle 27 to carry out the location support to second back shaft 28, thereby makes the effectual rotation that carries on of second back shaft 28, and planet carrier 24 can drive second back shaft 28 and revolve round simultaneously.
The inboard of second clearance brush 29 and vent 31 is laminated each other, and vent 31 is the mesh column structure, is favorable to dispelling the heat and dustproof work through vent 31, has made things convenient for second clearance brush 29 to clear up vent 31 simultaneously, avoids vent 31 to take place to block up and influences the radiating effect.
The working principle of the embodiment is as follows: according to the illustration in fig. 1-4, firstly, the temperature controller main body 1 is placed at a proper position by the worker, then the motor 18 is started after being connected with an external power supply, so that the motor 18 drives the driving shaft 19 to rotate, the driving shaft 19 drives the driving gear 20 to rotate when rotating, the driving gear 20 drives the driven gear 21 to rotate, the driven gear 21 drives the first supporting shaft 22 to rotate when rotating, the first supporting shaft 22 drives the second supporting shaft 28 to rotate through the meshing of the first bevel gear 25 and the second bevel gear 26, so that the second supporting shaft 28 drives the second cleaning brush 29 and the heat dissipation blades 30 to rotate respectively, the heat dissipation blades 30 perform heat dissipation work through the vent 31 when rotating, meanwhile, the dustproof work is facilitated through the mesh shape of the vent 31, and the second cleaning brush 29 performs dredging and cleaning work on the meshes of the vent 31 when rotating, thereby preventing the meshes from being blocked to affect the heat dissipation effect, meanwhile, the driven gear 21 revolves around the driving gear 20 by being meshed with the fixed gear ring 23 when rotating, so that the driven gear 21 drives the planet carrier 24 to revolve through the first support shaft 22, the planet carrier 24 revolves while driving the second support shaft 28 to revolve through the positioning shaft 27, and the second support shaft 28 drives the second cleaning brush 29 and the radiating blades 30 to revolve respectively, so that the radiating effect of the radiating blades 30 is improved, the second cleaning brush 29 is beneficial to cleaning the ventilation opening 31 more thoroughly, the integral radiating performance is further improved, the damage phenomenon caused by overhigh internal temperature of the temperature controller main body 1 is avoided, and the service life of the whole temperature controller is prolonged;
according to fig. 1 and 5-8, when the temperature controller main body 1 needs to be used, a worker shifts one end of the positioning rod 16, so that the positioning rod 16 drives the volute spring 15 on the surface of the fixed shaft 14 to deform (which is beneficial to the subsequent volute spring 15 to drive the positioning rod 16 to reset and rotate), and simultaneously the other end of the positioning rod 16 is separated from the fixed block 17, so as to release the positioning of the movable door 4, and then shifts the movable door 4, so that the movable door 4 drives the first connecting shaft 2 to rotate, so that the first connecting shaft 2 drives the first cylindrical gear 3 to rotate, the first cylindrical gear 3 drives the second cylindrical gear 5 to rotate when rotating, so that the second cylindrical gear 5 drives the wire connecting wheel 7 to rotate through the second connecting shaft 6, so that the wire connecting wheel 7 drives the first cleaning brush 9 to slide through the connecting wire 8, so that the first cleaning brush 9 performs defogging work on the surface of the display screen 13, avoided 13 surface adsorption mist of display screen to lead to influencing the phenomenon of normally watching and using, driven lantern ring 10 when first cleaning brush 9 slides simultaneously and slided on the surface of bracing piece 11, made things convenient for lantern ring 10 extrusion expanding spring 12 to contract deformation, when being favorable to follow-up dodge gate 4 of closing to protect, expanding spring 12 drives first cleaning brush 9 through lantern ring 10 and slides that resets to accomplish a series of work.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a concentration tower temperature controller, includes temperature controller main part (1), display screen (13) and motor (18), its characterized in that: one end of the temperature controller main body (1) is provided with a first connecting shaft (2), the surface of the first connecting shaft (2) is respectively provided with a first cylindrical gear (3) and a movable door (4) from outside to inside, one end of the first cylindrical gear (3) is meshed with a second cylindrical gear (5), the center of the second cylindrical gear (5) is provided with a second connecting shaft (6), the middle end of the second connecting shaft (6) is provided with a wire connecting wheel (7), the surface of the wire connecting wheel (7) is provided with a connecting wire (8), the other end of the connecting wire (8) is provided with a first cleaning brush (9), two ends of the first cleaning brush (9) are provided with lantern rings (10), a supporting rod (11) is arranged inside the lantern rings (10), a telescopic spring (12) is sleeved on the surface of the supporting rod (11), the upper end surface of the temperature controller main body (1) is provided with a display screen (13), a vent (31) is arranged on the surface of the lower end of the temperature controller main body (1), a fixed shaft (14) is arranged at one end, away from the first connecting shaft (2), of the movable door (4), a volute spring (15) is sleeved on the surface of the fixed shaft (14), a positioning rod (16) is sleeved on the surface of the volute spring (15), a fixed block (17) is connected to one end, away from the volute spring (15), of the positioning rod (16), the fixed block (17) is fixed to the outer side of one end of the temperature controller main body (1), a motor (18) is arranged inside the lower end of the temperature controller main body (1), a driving shaft (19) is arranged inside the motor (18), a driving gear (20) is arranged at one end, extending out of the motor (18), of the driving shaft (19), a driven gear (21) is meshed with the surface of the driving gear (20), a first, and the surface meshing of driven gear (21) has fixed ring gear (23), the one end that driven gear (21) was kept away from in first supporting shaft (22) runs through planet carrier (24) and is connected with first bevel gear (25), and the surface meshing of first bevel gear (25) has second bevel gear (26), the top surface of planet carrier (24) is provided with location axle (27), and the upper end of location axle (27) is provided with second back shaft (28), the one end of second back shaft (28) is connected with second bevel gear (26), and the other end of second back shaft (28) is provided with second cleaning brush (29) to the middle-end of second back shaft (28) is provided with radiator vane (30).
2. The concentrating tower temperature controller of claim 1, wherein: the lantern ring (10) is connected with the supporting rods (11) in a sliding mode, the two supporting rods (11) are symmetrically arranged, and the distance between the two supporting rods (11) is larger than the width of the display screen (13).
3. The concentrating tower temperature controller of claim 2, wherein: the lantern ring (10) and the supporting rod (11) form a telescopic structure through a telescopic spring (12), and the lantern ring (10) is symmetrically arranged at the upper end and the lower end of the first cleaning brush (9).
4. The concentrating tower temperature controller of claim 1, wherein: the positioning rod (16) and the fixed shaft (14) form a rotating structure through a volute spiral spring (15), one end of the positioning rod (16) is seen to be L-shaped in a plan view, and the inner side of the L-shaped end of the positioning rod (16) is attached to the surface of the fixed block (17).
5. The concentrating tower temperature controller of claim 1, wherein: the driven gear (21) is distributed in an equal angle mode relative to the axial center line of the driving gear (20), and the driven gear (21) and the driving gear (20) form a rotating structure through a fixed gear ring (23).
6. The concentrating tower temperature controller of claim 5, wherein: the driven gear (21) is in rotary connection with the planet carrier (24) through a first support shaft (22), and the planet carrier (24) is in a cross shape in plan view.
7. The concentrating tower temperature controller of claim 6, wherein: the first support shaft (22) and the second support shaft (28) are vertically distributed, and the second support shaft (28) and the first support shaft (22) form a linkage structure through a first bevel gear (25) and a second bevel gear (26).
8. The concentrating tower temperature controller of claim 7, wherein: the second supporting shaft (28) is rotatably connected with one end of the positioning shaft (27), the other end of the positioning shaft (27) is fixedly connected with the planet carrier (24), and the positioning shaft (27) and the driven gears (21) are consistent in number.
9. The concentrating tower temperature controller of claim 1, wherein: the inner sides of the second cleaning brush (29) and the ventilation opening (31) are mutually attached, and the ventilation opening (31) is of a mesh structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110034919.2A CN112516610A (en) | 2021-01-12 | 2021-01-12 | Temperature controller of concentration tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110034919.2A CN112516610A (en) | 2021-01-12 | 2021-01-12 | Temperature controller of concentration tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112516610A true CN112516610A (en) | 2021-03-19 |
Family
ID=74977342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110034919.2A Withdrawn CN112516610A (en) | 2021-01-12 | 2021-01-12 | Temperature controller of concentration tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112516610A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108447414A (en) * | 2018-05-14 | 2018-08-24 | 马鞍山景翔电子科技有限公司 | A kind of temperature control LCD screen |
| CN109493914A (en) * | 2018-11-01 | 2019-03-19 | 郑州福禄源电子科技有限公司 | A kind of instrument and meter display screen panel protective device and its method |
| CN211047717U (en) * | 2019-12-22 | 2020-07-17 | 恩平市科华电子有限公司 | Self-cleaning efficient heat dissipation power amplifier |
| CN211455135U (en) * | 2019-12-12 | 2020-09-08 | 怀化职业技术学院 | Electronic screen for indoor design effect picture display |
-
2021
- 2021-01-12 CN CN202110034919.2A patent/CN112516610A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108447414A (en) * | 2018-05-14 | 2018-08-24 | 马鞍山景翔电子科技有限公司 | A kind of temperature control LCD screen |
| CN109493914A (en) * | 2018-11-01 | 2019-03-19 | 郑州福禄源电子科技有限公司 | A kind of instrument and meter display screen panel protective device and its method |
| CN211455135U (en) * | 2019-12-12 | 2020-09-08 | 怀化职业技术学院 | Electronic screen for indoor design effect picture display |
| CN211047717U (en) * | 2019-12-22 | 2020-07-17 | 恩平市科华电子有限公司 | Self-cleaning efficient heat dissipation power amplifier |
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Application publication date: 20210319 |
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| WW01 | Invention patent application withdrawn after publication |