CN108455406A - A kind of elevator guide shoe - Google Patents
A kind of elevator guide shoe Download PDFInfo
- Publication number
- CN108455406A CN108455406A CN201810428537.6A CN201810428537A CN108455406A CN 108455406 A CN108455406 A CN 108455406A CN 201810428537 A CN201810428537 A CN 201810428537A CN 108455406 A CN108455406 A CN 108455406A
- Authority
- CN
- China
- Prior art keywords
- guide
- groove
- shoe
- wall
- oil
- 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.)
- Withdrawn
Links
- 238000003475 lamination Methods 0.000 claims description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000314 lubricant Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 64
- 239000010687 lubricating oil Substances 0.000 description 17
- 230000001050 lubricating effect Effects 0.000 description 8
- 239000002699 waste material Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
- B66B7/04—Riding means, e.g. Shoes, Rollers, between car and guiding means, e.g. rails, ropes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
- B66B7/1253—Lubricating means
- B66B7/1269—Lubricating means specially adapted for guides
Abstract
The invention discloses a kind of elevator guide shoe, including ontology and the shoe guide for being placed in body interior, the shoe guide matches with cage guide surface, and the both sides of the ontology are respectively equipped with an oil box holder, and the oil box holder is equipped with oil box, it is characterised in that:A groove is respectively equipped on the both sides inner wall of the shoe guide, the groove is in contact with the surface of cage guide;The both sides of the ontology are respectively equipped with a through-hole, and the through-hole is connected with groove described in respective side and oil box respectively, and each one oil box of through-hole face setting, the corresponding oil box is connected with the through-hole;It is respectively equipped with an oil suction sponge in each groove.The present invention improves the lubricant effect of guide shoe, reduces cost, ensure that the safety that elevator uses.
Description
Technical field
The present invention relates to a kind of elevator more particularly to a kind of elevator guide shoes.
Background technology
Guide shoe is the nylon block that can be slided between cage guide and car, and car can be fixed on guide rail by it,
Car may only be moved up and down, there be lubricating cup on guide shoe top, reduces the frictional force of shoe guide and guide rail.
Wherein, although having some guide shoes without lubricating cup, using the material of self-lubricating, in actual use, from
The material abrasion of lubrication is very fast, and the repair replacement frequency of such elevator guide shoe can be very high, and the dimension of elevator guide shoe
It is very inconvenient to repair replacement, while comparatively cost can higher.And just frequently with the structure of lubricating cup, it is polluted to ask
Topic.
Wherein, if using cup structure of extraction guide shoe, oil supply mode is fixed amount of oil, that is to say, that can not basis
Actual conditions carry out oil supply, may result in the waste for lubricating inadequate or lubricating oil, while operating personnel also must be regularly
It refuels, it is very inconvenient.Therefore, how above-mentioned technical problem is solved, is that those skilled in the art need the side made great efforts
To.
Invention content
It is an object of the present invention to provide a kind of elevator guide shoes to improve the stabilization that cage guide uses by using the structure
Property, the waste of lubricating oil is effectively reduced, ensure that lubricant effect of the guide shoe to elevator.
In order to achieve the above objectives, the technical solution adopted by the present invention is:A kind of elevator guide shoe, including ontology and it is placed in ontology
Internal shoe guide, the shoe guide match with cage guide surface, and the both sides of the ontology are respectively equipped with an oil box holder, described
Oil box holder is equipped with oil box, and a groove, the table of the groove and cage guide are respectively equipped on the both sides inner wall of the shoe guide
Face is in contact;The both sides of the ontology are respectively equipped with a through-hole, and the through-hole is connected with groove described in respective side and oil box respectively
Logical, each one oil box of through-hole face setting, the corresponding oil box is connected with the through-hole;It is set respectively in each groove
There is an oil suction sponge.
In above-mentioned technical proposal, the groove is T-type structure, and the groove includes interconnected vertical groove and transverse direction
Groove, the width of the vertical groove are more than the width of the transverse concave groove, the end face of the vertical groove and the through-hole phase
Connection, the end face of the transverse concave groove is connected with the inner wall of the shoe guide.
In above-mentioned technical proposal, the oil suction sponge is T-type structure, and the inner face of the oil suction sponge exposes to the boots
The inner wall of lining.
In above-mentioned technical proposal, an arc spring lamination, the both ends installation of the arc spring lamination are installed in each groove
In in the groove, exposing to the inner wall of the shoe guide in the middle part of the arc spring lamination, and it is butted in the middle part of the arc spring lamination
On the surface of cage guide;The arc spring lamination is equipped with a plurality of oil permeable holes, and the inner face of the oil suction sponge is butted on described
On the inner wall of arc spring lamination.
In above-mentioned technical proposal, the both ends of the arc spring lamination are respectively equipped with an extension board, and the extension board is inserted in institute
It states in vertical groove, and the end face of the extension board is butted on the inner wall of the vertical groove.
In above-mentioned technical proposal, the groove is set to the middle part of the shoe guide inner wall, the shoe guide inner wall top and bottom
The both sides in portion are respectively equipped with a swipe, and the end face of the swipe is butted on the surface of the cage guide.
In above-mentioned technical proposal, at the top of the shoe guide inner wall and both sides of bottom are respectively equipped with a slot, the swipe pair
It should be inserted in one of slot.
In above-mentioned technical proposal, the front end face of the slot is connected with the front end face of the shoe guide.
In above-mentioned technical proposal, the inner wall of the slot is equipped with magnet, and one end of the swipe is butted on the elevator and leads
On the surface of rail, the other end is equipped with a card, and the end of the brush head is inserted in through the card in the slot, and the card
Piece is made of iron plate.
Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art:
1. by the way that groove is arranged on the inner wall of shoe guide both sides in the present invention, oil suction sponge is set in groove, due to recessed
Slot is contacted with the surface of cage guide, while being connected to oil box, and the lubricating oil in such oil box can directly be dropped in oil suction sponge
On, using oil suction sponge oil suction, such ontology can squeeze oil suction sponge, make suction when being moved on cage guide surface
Lubricating oil in oily sponge is infected on the surface of cage guide, in this way and can ensure that ontology imitates the lubrication of cage guide
Fruit, meanwhile, it is capable to prevent lubricating oil is excessive to be dropped on cage guide and cause to waste, effectively save cost prevents from lubricating
The pollution of oil;
2. arc spring lamination is installed in the present invention in groove, inner wall of the arc spring lamination due to being exposed at shoe guide, that is,
During use, cage guide can squeeze arc spring lamination, that is, squeeze oil suction sponge, in this way being capable of squeezing by arc spring lamination
Pressure, the lubricating oil in oil suction sponge is expressed on the inner wall of shoe guide, plays lubricating action, while can also prevent lubricating oil
Waste;
3. by the way that swipe is respectively set at the top of shoe guide both sides and bottom in the present invention, so when in use, swipe energy
It is enough that the surface of cage guide is cleaned, it can ensure the normal use of guide shoe, ensure using effect.
Description of the drawings
Fig. 1 is the structural schematic diagram in the embodiment of the present invention one;
Fig. 2 is the partial enlarged view of Fig. 1.
Wherein:1, ontology;2, shoe guide;3, oil box holder;4, oil box;5, groove;6, through-hole;7, oil suction sponge;8, vertical
Groove;9, transverse concave groove;10, card;11, arc spring lamination;12, oil permeable hole;13, extension board;14, swipe;15, slot.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment one:Shown in Fig. 1,2, a kind of elevator guide shoe, including ontology 1 and the shoe guide 2 that is placed in inside ontology 1,
The shoe guide 2 matches with cage guide surface, and the both sides of the ontology 1 are respectively equipped with an oil box holder 3, the oil box holder
3 are equipped with oil box 4, and a groove 5, the surface phase of the groove 5 and cage guide are respectively equipped on the both sides inner wall of the shoe guide 2
Contact;The both sides of the ontology 1 are respectively equipped with a through-hole 6, and the through-hole 6 is connected with groove described in respective side 5 and oil box 4 respectively
Logical, 6 face of each through-hole, one oil box 4 is arranged, and the corresponding oil box 4 is connected with the through-hole 6;In each groove 5
It is respectively equipped with an oil suction sponge 7.
Shown in Fig. 1,2, the groove 5 is T-type structure, and the groove includes interconnected vertical groove 8 and cross
To groove 9, the width of the vertical groove 8 is more than the width of the transverse concave groove 9, the end face of the vertical groove 8 with it is described
Through-hole 6 is connected, and the end face of the transverse concave groove 9 is connected with the inner wall of the shoe guide 2.The oil suction sponge is T-type structure,
The inner face of the oil suction sponge exposes to the inner wall of the shoe guide.
In the present embodiment, in use, oil box memory removal of lubricant, lubricating oil directly can be flowed into groove by through-hole
It is interior, pass through oil suction sponge oil suction, wherein due to the presence of oil suction sponge, after lubricating oil is saturated in oil suction sponge, oil suction sea
Continuous no longer oil suction, meanwhile, oil suction sponge will make the lubricating oil in oil box not continue to flow out, wherein to lead by through-hole to blocking
During boots move up and down on cage guide, since the inner face of oil suction sponge exposes to the inner wall of shoe guide, that is,
Cage guide can squeeze oil suction sponge, by the lubricating oil extrusion coated in oil suction sponge on the surface of cage guide, thus
It can ensure that guide shoe normally lubricates cage guide, additionally it is possible to prevent the waste of lubricating oil.Meanwhile if profit in oil box
After lubricating oil all discharges, the lubricating oil in oil suction sponge can also use a period of time, and this makes it possible to staff one
The fixed time is replaced, and can either ensure the convenience of operating personnel's operation, meanwhile, it can also ensure guide shoe and cage guide
Between lubricant effect.
Shown in Fig. 1,2, an arc spring lamination 11, the both ends of the arc spring lamination 11 are installed in each groove 5
It is installed in the groove 5, the middle part of the arc spring lamination 11 exposes to the inner wall of the shoe guide 2, and the arc spring lamination 11
Middle part be butted on the surface of cage guide;The arc spring lamination 11 is equipped with a plurality of oil permeable holes 12, the oil suction sponge
Inner face is butted on the inner wall of the arc spring lamination.
The both ends of the arc spring lamination 11 are respectively equipped with an extension board 13, and the extension board is inserted in the vertical groove
It is interior, and the end face of the extension board is butted on the inner wall of the vertical groove.
In the present embodiment, it if oil suction sponge directly contacts with the surface of cage guide, uses for a long time in this way, pole
It is easy to make oil suction sponge to wear, and causes oil suction sponge that can not be contacted with the surface of cage guide, needs staff often more
It changes, therefore, by the way that arc spring lamination is arranged, oil permeable hole is set on the surface of arc spring lamination, so when in use, cage guide can squeeze
Arc spring lamination is pressed, arc spring lamination is squeezed towards inside grooves, squeezes oil suction sponge using arc spring lamination, this makes it possible to will inhale
Lubricating oil inside oily sponge squeezes out, and on the surface by oil permeable hole runner cage guide, plays lubricating action.Simultaneously as
The setting of arc spring lamination and extension board, such arc spring lamination and extension board and the contact area of oil suction sponge are big, and such elevator is led
For rail when squeezing arc spring lamination, arc spring lamination and extension board large area can squeeze oil suction sponge as far as possible, will inhale
Lubricating oil in oily sponge squeezes out, and ensures lubricant effect and lubricating quality.If cage guide surface lubrication oil is excessive, still
It can directly directly be sucked by oil suction sponge by groove and oil permeable hole, prevent the waste of lubricating oil.
Shown in Fig. 1,2, the groove 5 is set to the middle part of the shoe guide inner wall, 2 inner wall of shoe guide top and bottom
The both sides in portion are respectively equipped with a swipe 14, and the end face of the swipe is butted on the surface of the cage guide.
In the present embodiment, it since cage guide is set up directly on inside elevator, and is not done inside elevator dust-proof
Equal measures, so when in use, dust and other impurities, the process slided up and down in this way in guide shoe are easily infected in cage guide surface
In, easily to the base liner abrasion inside guide shoe, by the setting of swipe, such guide shoe is during moving up and down, swipe meeting
It first to the removing surface of cage guide, that is, can ensure the cleannes on cage guide surface, ensure the normal movement of guide shoe,
It prevents the vibration in running process of elevator from occurring, prevents the abrasion of guide shoe, prolong the service life, ensure safety when elevator uses
Property.
Shown in Fig. 1,2, at the top of 2 inner wall of the shoe guide and both sides of bottom are respectively equipped with a slot 15, the swipe
14 corresponding inserteds are in one of slot 15.
The front end face of the slot is connected with the front end face of the shoe guide.
The inner wall of the slot is equipped with magnet, and one end of the swipe is butted on the surface of the cage guide, another
End is equipped with a card 10, and the end of the brush head is inserted in through the card in the slot, and the card is made of iron plate.
Wherein, it by the setting of slot and magnet, so when in use, if swipe is worn, can carry out quickly
Replacement, it is only necessary to card is pulled out out of slot, you can swipe is taken out, is directly replaced, when installation, passes through magnetic
Card is sucked in iron, this makes it possible to prevent swipe from being fallen out of slot, ensures use quality.
In the present embodiment, swipe is made of elastic rubber, and such swipe just has certain elasticity, cleaning effect
It is good, and service life is long, and wear extent is small.
Claims (9)
1. a kind of elevator guide shoe, including ontology and the shoe guide for being placed in body interior, the shoe guide match with cage guide surface,
The both sides of the ontology are respectively equipped with an oil box holder, and the oil box holder is equipped with oil box, it is characterised in that:The shoe guide
A groove is respectively equipped on the inner wall of both sides, the groove is in contact with the surface of cage guide;The both sides of the ontology are set respectively
There are a through-hole, the through-hole to be connected respectively with groove described in respective side and oil box, each one oil box of through-hole face setting,
The corresponding oil box is connected with the through-hole;It is respectively equipped with an oil suction sponge in each groove.
2. elevator guide shoe according to claim 1, it is characterised in that:The groove is T-type structure, and the groove includes phase
Intercommunicated vertical groove and transverse concave groove, the width of the vertical groove is more than the width of the transverse concave groove, described vertical
The end face of groove is connected with the through-hole, and the end face of the transverse concave groove is connected with the inner wall of the shoe guide.
3. elevator guide shoe according to claim 2, it is characterised in that:The oil suction sponge is T-type structure, the oil suction sea
Continuous inner face exposes to the inner wall of the shoe guide.
4. elevator guide shoe according to claim 2, it is characterised in that:An arc spring lamination is installed in each groove,
The both ends of the arc spring lamination are installed in the groove, and the inner wall of the shoe guide is exposed in the middle part of the arc spring lamination, and
It is butted on the surface of cage guide in the middle part of the arc spring lamination;The arc spring lamination is equipped with a plurality of oil permeable holes, the suction
The inner face of oily sponge is butted on the inner wall of the arc spring lamination.
5. elevator guide shoe according to claim 4, it is characterised in that:The both ends of the arc spring lamination are respectively equipped with an extension
Plate, the extension board are inserted in the vertical groove, and the end face of the extension board is butted on the inner wall of the vertical groove.
6. elevator guide shoe according to claim 1, it is characterised in that:The groove is set in the shoe guide inner wall
The both sides of portion, the shoe guide inner wall top and bottom are respectively equipped with a swipe, and the end face of the swipe is butted on the cage guide
Surface on.
7. elevator guide shoe according to claim 6, it is characterised in that:At the top of the shoe guide inner wall and both sides of bottom difference
Equipped with a slot, the swipe corresponding inserted is in one of slot.
8. elevator guide shoe according to claim 7, it is characterised in that:The front end of the front end face of the slot and the shoe guide
Face is connected.
9. elevator guide shoe according to claim 8, it is characterised in that:The inner wall of the slot is equipped with magnet, the brush
One end of item is butted on the surface of the cage guide, and the other end is equipped with a card, and the end of the brush head is inserted through the card
In the slot, and the card is made of iron plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810428537.6A CN108455406A (en) | 2018-05-07 | 2018-05-07 | A kind of elevator guide shoe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810428537.6A CN108455406A (en) | 2018-05-07 | 2018-05-07 | A kind of elevator guide shoe |
Publications (1)
Publication Number | Publication Date |
---|---|
CN108455406A true CN108455406A (en) | 2018-08-28 |
Family
ID=63214910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201810428537.6A Withdrawn CN108455406A (en) | 2018-05-07 | 2018-05-07 | A kind of elevator guide shoe |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108455406A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109879137A (en) * | 2019-03-18 | 2019-06-14 | 克莱斯电梯(中国)有限公司 | A kind of elevator roller guide shoe |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201190067Y (en) * | 2008-01-14 | 2009-02-04 | 康力电梯股份有限公司 | Elevator guide shoe |
CN204251143U (en) * | 2014-11-27 | 2015-04-08 | 日立电梯(中国)有限公司 | A kind of cage guide clean-up device |
CN204823577U (en) * | 2015-07-23 | 2015-12-02 | 江西莱茵电梯有限公司 | Elevator car's guide system |
CN204917543U (en) * | 2015-08-14 | 2015-12-30 | 湖州中合蒂森电梯有限公司 | Boots are led to elevator |
CN106263699A (en) * | 2016-08-22 | 2017-01-04 | 海宁金茂五金有限公司 | The quiet slide rail of tool lubricating function |
CN206108627U (en) * | 2016-10-17 | 2017-04-19 | 浙江西奥电梯有限公司 | Durable elevator guiding shoe |
CN206857910U (en) * | 2017-06-16 | 2018-01-09 | 张家港市兴隆达机械有限公司 | High-precision cage guide |
CN206886476U (en) * | 2017-06-28 | 2018-01-16 | 苏州新达电扶梯部件有限公司 | Automatic cleaning device for guide rail of elevator |
CN208327036U (en) * | 2018-05-07 | 2019-01-04 | 克莱斯电梯(中国)有限公司 | A kind of elevator guide shoe |
-
2018
- 2018-05-07 CN CN201810428537.6A patent/CN108455406A/en not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201190067Y (en) * | 2008-01-14 | 2009-02-04 | 康力电梯股份有限公司 | Elevator guide shoe |
CN204251143U (en) * | 2014-11-27 | 2015-04-08 | 日立电梯(中国)有限公司 | A kind of cage guide clean-up device |
CN204823577U (en) * | 2015-07-23 | 2015-12-02 | 江西莱茵电梯有限公司 | Elevator car's guide system |
CN204917543U (en) * | 2015-08-14 | 2015-12-30 | 湖州中合蒂森电梯有限公司 | Boots are led to elevator |
CN106263699A (en) * | 2016-08-22 | 2017-01-04 | 海宁金茂五金有限公司 | The quiet slide rail of tool lubricating function |
CN206108627U (en) * | 2016-10-17 | 2017-04-19 | 浙江西奥电梯有限公司 | Durable elevator guiding shoe |
CN206857910U (en) * | 2017-06-16 | 2018-01-09 | 张家港市兴隆达机械有限公司 | High-precision cage guide |
CN206886476U (en) * | 2017-06-28 | 2018-01-16 | 苏州新达电扶梯部件有限公司 | Automatic cleaning device for guide rail of elevator |
CN208327036U (en) * | 2018-05-07 | 2019-01-04 | 克莱斯电梯(中国)有限公司 | A kind of elevator guide shoe |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109879137A (en) * | 2019-03-18 | 2019-06-14 | 克莱斯电梯(中国)有限公司 | A kind of elevator roller guide shoe |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN208327036U (en) | A kind of elevator guide shoe | |
CN108455406A (en) | A kind of elevator guide shoe | |
JP2006266357A (en) | Linear guide unit | |
TW201723353A (en) | Ball screw with maintenance device comprising a fixing cover having a collection trough in communication with a through hole and connected with a suction tube or a grease supply tube for cleaning and re-filling of grease | |
CN207033986U (en) | A kind of lubricating type guide pillar structure | |
JP6072823B2 (en) | Linear guide with lubricating device | |
CN210371661U (en) | Can long-time dirt-proof linear guide | |
CN112195868A (en) | Flashboard for hydraulic engineering | |
CN204509614U (en) | The sword belt guide rail of Rapier looms | |
CN204122386U (en) | A kind of device clean for wire | |
TWI415989B (en) | Leakage prevention device for upper hook mechanism | |
CN210423434U (en) | Slider for miniature linear guide rail | |
CN208467739U (en) | A kind of guide rail on lathe | |
CN108626111B (en) | Five-plunger high-pressure pump | |
CN218509977U (en) | Linear guide rail noise reduction type sliding block structure | |
CN207962057U (en) | A kind of novel double dust-proof the linear guide oil-scrapping sheets | |
CN208887371U (en) | Side Seal on Sintering Pallet | |
CN212840625U (en) | Novel lubricating oil way of horizontal forging machine | |
CN210919824U (en) | Linear guide rail with good wear resistance | |
CN202848804U (en) | Automatically-adjusted lubrication device for elevator guide rail | |
CN217633466U (en) | Linear guide rail with locking structure | |
CN211138032U (en) | Copper lubricating arrangement of injection molding machine movable mould board | |
CN217355229U (en) | Linear guide rail with external oil storage box convenient to maintain | |
CN104192161A (en) | Railway brake valve with automatic lubricating oil circulating function | |
CN212156591U (en) | Slide rail with connect drive arrangement |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
Application publication date: 20180828 |
|
WW01 | Invention patent application withdrawn after publication |