CN111022898A - Comprehensive lubricating device for bearing balls - Google Patents
Comprehensive lubricating device for bearing balls Download PDFInfo
- Publication number
- CN111022898A CN111022898A CN202010019589.5A CN202010019589A CN111022898A CN 111022898 A CN111022898 A CN 111022898A CN 202010019589 A CN202010019589 A CN 202010019589A CN 111022898 A CN111022898 A CN 111022898A
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- China
- Prior art keywords
- cavity
- rotating
- driven
- lifting
- sliding
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
Abstract
The invention discloses a comprehensive lubricating device for bearing balls, which comprises a machine shell, wherein a transmission cavity is arranged at the lower end in the machine shell, a bearing rotating mechanism for rotating a bearing is arranged in the transmission cavity, a lubricating liquid spraying mechanism for adding lubricating liquid is arranged at the upper end in the machine shell, and a spray head lifting mechanism for descending a lubricating spray head is also arranged at the upper end in the machine shell.
Description
Technical Field
The invention relates to the field of lubrication, in particular to a bearing ball comprehensive lubricating device.
Background
The bearing is an important apparatus in mechanical equipment, and the function of the bearing is to reduce the friction coefficient when the machine runs in rotation, so that the bearing needs to be lubricated after a period of time to reduce the friction coefficient when the bearing works.
At the present stage, when the bearing needs to be lubricated, the bearing is usually lubricated in an artificial mode, the artificial mode not only has lower lubrication efficiency, but also can spray lubricating oil to the outside to cause the waste of the lubricating oil.
Disclosure of Invention
The invention aims to solve the technical problem of providing a bearing ball comprehensive lubricating device, which solves the problems of low working efficiency, incapability of precise lubrication and the like and improves the lubricating efficiency and the lubricating precision.
The invention is realized by the following technical scheme.
The invention relates to a bearing ball comprehensive lubricating device which comprises a machine shell, wherein a transmission cavity is arranged at the lower end in the machine shell, a bearing rotating mechanism of a rotating bearing is arranged in the transmission cavity, a lubricating liquid spraying mechanism for adding lubricating liquid is arranged at the upper end in the machine shell, and a spray head lifting mechanism for descending a lubricating spray head is further arranged at the upper end in the machine shell;
the bearing rotating mechanism comprises a motor fixed on the lower cavity wall of the transmission cavity, the upper end of the motor is in power connection with a driving shaft, the lower end of the driving shaft is provided with a first driving belt wheel, a second driving belt wheel and a third driving belt wheel which are positioned in the transmission cavity, the upper end surface of the driving shaft is provided with a rotating block, two displacement cavities with left and right openings are arranged in the rotating block, inner ring clamping blocks capable of sliding left and right in the cavity are arranged in the displacement cavities, a compression spring is connected between one end surface of each inner ring clamping block and the cavity wall of the displacement cavity, a bearing to be lubricated is sleeved on the two inner ring clamping blocks and fixes the inner ring of the bearing, a collection cavity with an upward opening is arranged on the upper side of the transmission cavity, moving cavities with right and left openings are arranged in the cavity walls of the left side and the right side of the rotating block, and a moving cavity capable, the outer clamping block end face with it is equipped with extension spring to remove to be connected between the chamber wall in chamber, it is equipped with the lower extreme and stretches into to remove chamber upper chamber wall rotation the driven shaft in the transmission intracavity, the driven shaft up end be equipped with the rotatory gear that the end surface meshing is connected before the outer clamping block, two the driven shaft lower extreme all is equipped with a second driven pulleys, two the second driven pulleys respectively through be equipped with the second belt with second driving pulley and third driving pulley rotate to be connected, left the driven shaft lower extreme still is equipped with the rope winding wheel, the winding is equipped with the stay cord on the rope winding wheel.
Beneficially, the lubricating liquid spraying mechanism comprises a driven cavity located on the upper side of the transmission cavity, a rotating shaft is rotatably arranged between the upper cavity wall of the driven cavity and the lower cavity wall of the transmission cavity, a first driven belt wheel is arranged at the lower end of the rotating shaft, a first belt is connected between the first driven belt wheel and the first driving belt wheel, a sliding bevel gear located in the driven cavity is connected to the upper end of the rotating shaft through a spline, a sliding cavity with a downward opening is arranged in the sliding bevel gear, a sliding block capable of sliding in the cavity is arranged in the sliding cavity, the lower end face of the sliding block is connected with the pull rope, a rotating plate located on the upper side of the sliding bevel gear is arranged at the upper end of the rotating shaft, two reset springs are connected between the lower end face of the rotating plate and the upper end face of the sliding bevel gear, a liquid storage cavity is arranged on the right side of the, the improved lubricating device is characterized in that a driven bevel gear located in the driven cavity is arranged at the left end of the rotating shaft, a rotating gear located in the liquid storage cavity is arranged at the right end of the rotating shaft, a push plate capable of sliding up and down in the cavity is arranged in the liquid storage cavity, a rack which is meshed and connected with the front end face and the rotating gear is fixedly arranged on the upper end face of the push plate, a tension spring is connected between the upper end face of the push plate and the upper cavity wall of the liquid storage cavity, and lubricating liquid is filled in the.
Advantageously, the spray head lifting mechanism comprises a lifting cavity which is positioned at the lower side of the liquid storage cavity and is provided with a downward opening, a lifting spray head capable of sliding up and down in the lifting cavity is arranged in the lifting cavity, a fixed block is fixedly arranged on the right end face of the lifting spray head, an elastic spring is connected between the lower end surface of the fixed block and the lower cavity wall of the lifting cavity, an inner hole is arranged in the lifting spray head, a fixed block extending into the inner hole is arranged on the lower cavity wall of the liquid storage cavity, a rotating cavity with a right opening is arranged on the left side of the lifting cavity, a rotating rod is rotatably arranged on the front cavity wall and the rear cavity wall of the rotating cavity, a driven gear in meshed connection with the left end surface of the lifting spray head is arranged at the front end of the rotating rod, the dwang rear end is equipped with first reel, the winding is equipped with the rope made of hemp on the first reel, the rotation axis upper end is equipped with and is located from the second reel of intracavity, the winding has on the second reel the rope made of hemp.
Advantageously, the elastic force of said elastic spring is greater than the sum of the friction force to which said lift jet slides in said lift chamber and the weight of said lift jet.
Advantageously, the tension of the two return springs is greater than the sum of the friction force experienced by the sliding bevel gear when sliding on the rotating shaft and the weight of the sliding bevel gear.
The invention has the beneficial effects that: the bearing lubricating device is simple in structure and convenient and fast to operate, can be suitable for bearings with different inner diameters in a working process, clamps and fixes the bearings, automatically lowers the spray head for spraying lubricating liquid to the parts to be lubricated of the bearings for accurate lubrication, and lubricates the bearings in all aspects through rotation of the bearings in a lubricating process, so that the lubricating efficiency is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the structure at B in FIG. 1 according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram at C-C in FIG. 1 according to an embodiment of the present invention.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The comprehensive bearing ball lubricating device described in conjunction with the attached figures 1-4 comprises a casing 10, a transmission cavity 35 is arranged at the lower end in the casing 10, a bearing rotating mechanism 28 of a rotating bearing is arranged in the transmission cavity 35, a lubricating liquid spraying mechanism 12 for adding lubricating liquid is arranged at the upper end in the casing 10, a nozzle lifting mechanism 23 for descending a lubricating nozzle is further arranged at the upper end in the casing 10, the bearing rotating mechanism 28 comprises a motor 30 fixed on the lower cavity wall of the transmission cavity 35, the upper end of the motor 30 is in power connection with a driving shaft 65, the lower end of the driving shaft 65 is provided with a first driving pulley 31, a second driving pulley 29 and a third driving pulley 66 which are positioned in the transmission cavity 35, the upper end face of the driving shaft 65 is provided with a rotating block 27, two displacement cavities 24 which are respectively opened leftwards and rightwards are arranged in the rotating block 27, an inner ring clamping block 25 which can slide leftwards and rightwards in, a compression spring 60 is connected and arranged between one end face of the inner ring clamping block 25 and one cavity wall of the displacement cavity 24, a bearing sleeve to be lubricated can be sleeved on the two inner ring clamping blocks 25 and the inner ring of the bearing is fixed, a collection cavity 26 with an upward opening is arranged on the upper side of the transmission cavity 35, a moving cavity 42 with a right opening and a left opening is respectively arranged in the cavity walls on the left side and the right side of the rotation block 27, a moving cavity 42 capable of sliding left and right in the cavity is arranged in the moving cavity 42, an extension spring 41 is connected between one end face of the outer clamping block 43 and one cavity wall of the moving cavity 42, a driven shaft 39 with a lower end extending into the transmission cavity 35 is arranged on the upper cavity wall of the moving cavity 42 in a rotating mode, a rotating gear 40 connected with the front end face of the outer clamping block 43 in a meshing mode is arranged on the upper end face of the driven shaft 39, a second driven belt pulley 34 is arranged at the lower end of the driven shaft 39, and the second driven belt The third driving pulley 66 is rotatably connected, a rope winding wheel 37 is further arranged at the lower end of the driven shaft 39 on the left side, and a pulling rope 38 is wound on the rope winding wheel 37.
Advantageously, the lubricating liquid spraying mechanism 12 comprises a driven cavity 48 located on the upper side of the transmission cavity 35, a rotating shaft 45 is rotatably arranged between the upper cavity wall of the driven cavity 48 and the lower cavity wall of the transmission cavity 35, a first driven pulley 36 is arranged at the lower end of the rotating shaft 45, a first belt 33 is connected between the first driven pulley 36 and the first driving pulley 31, a sliding bevel gear 50 located in the driven cavity 48 is splined at the upper end of the rotating shaft 45, a sliding cavity 49 with a downward opening is arranged in the sliding bevel gear 50, a sliding block 53 capable of sliding in the sliding cavity is arranged in the sliding cavity 49, the pull rope 38 is connected to the lower end face of the sliding block 53, a rotating plate 52 located on the upper side of the sliding bevel gear 50 is arranged at the upper end of the rotating shaft 45, two return springs 51 are connected between the lower end face of the rotating plate 52 and the upper end face of the sliding bevel, driven cavity 48 right side is equipped with stock solution chamber 13, driven cavity 48 right side chamber wall rotates and is equipped with the right-hand member and stretches into pivot 11 in the stock solution chamber 13, 11 left ends in pivot are equipped with and are located driven bevel gear 54 in the driven cavity 48, 11 right-hand members in pivot are equipped with and are located rotating gear 14 in the stock solution chamber 13, be equipped with in the stock solution chamber 13 and can be at intracavity gliding push pedal 17 from top to bottom, the fixed preceding terminal surface that is equipped with of push pedal 17 up end with rack 15 that rotating gear 14 meshing is connected, push pedal 17 up end with it is equipped with tension spring 16 to connect between the cavity wall in the stock solution chamber 13, lubricated liquid 18 is equipped with in the stock solution chamber 13.
Beneficially, shower nozzle elevating system 23 is including being located stock solution chamber 13 downside and the decurrent lift chamber 21 of opening, it can be at the intracavity gliding lift shower nozzle 22 from top to bottom to be equipped with in the lift chamber 21, lift shower nozzle 22 right end face is fixed and is equipped with fixed block 19, fixed block 19 lower extreme terminal surface with it is equipped with elasticity spring 20 to go up and down to connect between the chamber 21 lower chamber wall, be equipped with hole 63 in the lift shower nozzle 22, stock solution chamber 13 lower chamber wall is equipped with and stretches into fixed block 67 in the hole 63, lift chamber 21 left side is equipped with opening right rotation chamber 56, it is equipped with dwang 58 to rotate chamber 56 front and back chamber wall rotation, dwang 58 front end be equipped with the driven gear 55 that lift shower nozzle 22 left end face meshing is connected, dwang 58 rear end is equipped with first reel 57, the winding is equipped with twine 47 on the first reel 57, rotation axis 45 upper end is equipped with and is located second reel, the hemp rope 47 is wound around the second reel 46.
Advantageously, the elastic force of the elastic spring 20 is greater than the sum of the friction force to which the lift nozzle 22 slides within the lift chamber 21 and the weight of the lift nozzle 22.
Advantageously, the tension of the two return springs 51 is greater than the sum of the friction force received by the sliding bevel gear 50 when sliding on the rotating shaft 45 and the gravity of the sliding bevel gear 50.
In the initial state, the sliding bevel gear 50 is disengaged from the driven bevel gear 54, and the lifting nozzle 22 is located in the lifting chamber 21.
During working, a bearing to be lubricated is sleeved on the two inner ring clamping blocks 25, the motor 30 is started, the motor 30 works to drive the driving shaft 65 to rotate, so as to drive the first driving belt wheel 31, the second driving belt wheel 29, the third driving belt wheel 66 and the rotating block 27 to rotate, the second driving belt wheel 29 and the third driving belt wheel 66 rotate to respectively drive the two second driven belt wheels 34 to rotate, the second driven belt wheel 34 rotates to drive the driven shaft 39 to rotate, so as to drive the rotating gear 40 to rotate, the rotating gear 40 rotates to drive the two outer clamping blocks 43 which are in meshed connection with the rotating gear 40 to move, the two outer clamping blocks 43 move towards the bearing and clamp the outer ring of the bearing, after the outer clamping blocks 43 clamp the bearing, the outer clamping blocks 43 stop moving, the two rotating gears 40 slide on the driven shaft 39 to complete clamping of the bearing, and the rotating block 27 rotates to drive the inner ring of;
when the sprayer is lowered, the first driving belt wheel 31 rotates to drive the first driven belt wheel 36 connected with the first driving belt wheel through the first belt 33 to rotate, so that the rotating shaft 45, the second reel 46 and the sliding bevel gear 50 on the rotating shaft 45 are driven to rotate, the second reel 46 rotates to tighten the hemp rope 47, the hemp rope 47 tightens to drive the first reel 57 to rotate, so that the rotating rod 58 and the driven gear 55 at the front end of the rotating rod 58 are driven to rotate, so that the lifting sprayer 22 meshed with the driven gear 55 is driven to move downwards, and the lifting sprayer 22 moves downwards to a bearing lubricating part;
when the lubricating liquid is sprayed, the rope winding wheel 37 rotates to tighten the pulling rope 38, the sliding bevel gear 50 moves downwards under the action of the pulling force of the pulling rope 38 and is meshed with the driven bevel gear 54, the pulling rope 38 stops continuing to be tensioned after the sliding bevel gear 50 is meshed with the driven bevel gear 54, the rope winding wheel 37 slips on the driven shaft 39, the sliding bevel gear 50 rotates to drive the driven bevel gear 54 meshed with the sliding bevel gear to rotate, so that the rotating shaft 11 and the rotating gear 14 at the right end of the rotating shaft 11 are driven to rotate, the rack 15 meshed with the rotating gear 14 is driven to move downwards, the push plate 17 is driven to move downwards to push the lubricating liquid in the liquid storage cavity 13 downwards, and finally the lubricating liquid is sprayed into the bearing through the inner hole 63 in the lifting spray head 22, the inside of the bearing is comprehensively lubricated through the rotation of the bearing, and redundant lubricating liquid falls.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a comprehensive lubricating arrangement of bearing ball, includes the casing, its characterized in that: a transmission cavity is arranged at the lower end in the machine shell, a bearing rotating mechanism of a rotating bearing is arranged in the transmission cavity, a lubricating liquid spraying mechanism for adding lubricating liquid is arranged at the upper end in the machine shell, and a spray head lifting mechanism for descending a lubricating spray head is also arranged at the upper end in the machine shell;
the bearing rotating mechanism comprises a motor fixed on the lower cavity wall of the transmission cavity, the upper end of the motor is in power connection with a driving shaft, the lower end of the driving shaft is provided with a first driving belt wheel, a second driving belt wheel and a third driving belt wheel which are positioned in the transmission cavity, the upper end surface of the driving shaft is provided with a rotating block, two displacement cavities with left and right openings are arranged in the rotating block, inner ring clamping blocks capable of sliding left and right in the cavity are arranged in the displacement cavities, a compression spring is connected between one end surface of each inner ring clamping block and the cavity wall of the displacement cavity, a bearing to be lubricated is sleeved on the two inner ring clamping blocks and fixes the inner ring of the bearing, a collection cavity with an upward opening is arranged on the upper side of the transmission cavity, moving cavities with right and left openings are arranged in the cavity walls of the left side and the right side of the rotating block, and a moving cavity capable, the outer clamping block end face with it is equipped with extension spring to remove to be connected between the chamber wall in chamber, it is equipped with the lower extreme and stretches into to remove chamber upper chamber wall rotation the driven shaft in the transmission intracavity, the driven shaft up end be equipped with the rotatory gear that the end surface meshing is connected before the outer clamping block, two the driven shaft lower extreme all is equipped with a second driven pulleys, two the second driven pulleys respectively through be equipped with the second belt with second driving pulley and third driving pulley rotate to be connected, left the driven shaft lower extreme still is equipped with the rope winding wheel, the winding is equipped with the stay cord on the rope winding wheel.
2. The device for fully lubricating a bearing ball according to claim 1, wherein: the lubricating liquid spraying mechanism comprises a driven cavity positioned on the upper side of the transmission cavity, a rotating shaft is rotatably arranged between the upper cavity wall of the driven cavity and the lower cavity wall of the transmission cavity, a first driven belt wheel is arranged at the lower end of the rotating shaft, a first belt is connected between the first driven belt wheel and the first driving belt wheel, a sliding bevel gear positioned in the driven cavity is connected to the upper end of the rotating shaft through a spline, a sliding cavity with a downward opening is arranged in the sliding bevel gear, a sliding block capable of sliding in the cavity is arranged in the sliding cavity, the lower end face of the sliding block is connected with the pull rope, a rotating plate positioned on the upper side of the sliding bevel gear is arranged at the upper end of the rotating shaft, two reset springs are connected between the lower end face of the rotating plate and the upper end face of the sliding bevel gear, a liquid storage cavity is arranged on the right side of the, the improved lubricating device is characterized in that a driven bevel gear located in the driven cavity is arranged at the left end of the rotating shaft, a rotating gear located in the liquid storage cavity is arranged at the right end of the rotating shaft, a push plate capable of sliding up and down in the cavity is arranged in the liquid storage cavity, a rack which is meshed and connected with the front end face and the rotating gear is fixedly arranged on the upper end face of the push plate, a tension spring is connected between the upper end face of the push plate and the upper cavity wall of the liquid storage cavity, and lubricating liquid is filled in the.
3. The device for fully lubricating a bearing ball according to claim 1, wherein: the spray head lifting mechanism comprises a lifting cavity which is positioned at the lower side of the liquid storage cavity and has a downward opening, a lifting spray head which can slide up and down in the lifting cavity is arranged in the lifting cavity, a fixed block is fixedly arranged on the right end face of the lifting spray head, an elastic spring is connected between the lower end face of the fixed block and the lower cavity wall of the lifting cavity, an inner hole is arranged in the lifting spray head, a fixed block extending into the inner hole is arranged on the lower cavity wall of the liquid storage cavity, a rotating cavity with a right opening is arranged at the left side of the lifting cavity, rotating rods are rotatably arranged on the front cavity wall and the rear cavity wall of the rotating cavity, the front end of the rotating rod is provided with a driven gear which is meshed and connected with the left end surface of the lifting spray head, the rear end of the rotating rod is provided with a first reel, the winding is equipped with the rope made of hemp on the first reel, the rotation axis upper end is equipped with and is located from the second reel of intracavity, the winding has on the second reel the rope made of hemp.
4. A full lubrication device for a bearing ball according to claim 3, wherein: the elasticity of the elastic spring is larger than the sum of the friction force borne by the lifting spray head when the lifting spray head slides in the lifting cavity and the gravity of the lifting spray head.
5. The device for fully lubricating a bearing ball according to claim 2, wherein: the tension of the two return springs is larger than the sum of the friction force borne by the sliding bevel gear when the sliding bevel gear slides on the rotating shaft and the gravity of the sliding bevel gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010019589.5A CN111022898A (en) | 2020-01-08 | 2020-01-08 | Comprehensive lubricating device for bearing balls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010019589.5A CN111022898A (en) | 2020-01-08 | 2020-01-08 | Comprehensive lubricating device for bearing balls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111022898A true CN111022898A (en) | 2020-04-17 |
Family
ID=70202460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010019589.5A Withdrawn CN111022898A (en) | 2020-01-08 | 2020-01-08 | Comprehensive lubricating device for bearing balls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111022898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228755A (en) * | 2020-10-19 | 2021-01-15 | 项红梅 | Universal bearing grease injector structure |
| CN112696604A (en) * | 2021-01-14 | 2021-04-23 | 广州浩恙科技有限公司 | Motor capable of automatically adding and replacing lubricant |
-
2020
- 2020-01-08 CN CN202010019589.5A patent/CN111022898A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228755A (en) * | 2020-10-19 | 2021-01-15 | 项红梅 | Universal bearing grease injector structure |
| CN112696604A (en) * | 2021-01-14 | 2021-04-23 | 广州浩恙科技有限公司 | Motor capable of automatically adding and replacing lubricant |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20200417 |