CN101190114A - Vacuum cleaner with mobile blade - Google Patents
Vacuum cleaner with mobile blade Download PDFInfo
- Publication number
- CN101190114A CN101190114A CNA2007101025082A CN200710102508A CN101190114A CN 101190114 A CN101190114 A CN 101190114A CN A2007101025082 A CNA2007101025082 A CN A2007101025082A CN 200710102508 A CN200710102508 A CN 200710102508A CN 101190114 A CN101190114 A CN 101190114A
- Authority
- CN
- China
- Prior art keywords
- blade
- frictional force
- described blade
- cleaner
- cleaner according
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
- A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/02—Floor surfacing or polishing machines
- A47L11/20—Floor surfacing or polishing machines combined with vacuum cleaning devices
- A47L11/204—Floor surfacing or polishing machines combined with vacuum cleaning devices having combined drive for brushes and for vacuum cleaning
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/02—Nozzles
- A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
- A47L9/0666—Nozzles with fixed, e.g. adjustably fixed brushes or the like with tilting, floating or similarly arranged brushes, combs, lips or pads
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2201/00—Robotic cleaning machines, i.e. with automatic control of the travelling movement or the cleaning operation
- A47L2201/06—Control of the cleaning action for autonomous devices; Automatic detection of the surface condition before, during or after cleaning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
A vacuum cleaner with a rotatable blade is disclosed. The vacuum cleaner includes a body, a blade attached to a lower end of the body, and a rotating unit attached to the body so as to rotate the blade.
Description
The cross reference of related application
The rights and interests of the application advocates the korean patent application of filing an application in Korea S Department of Intellectual Property respectively on November 28th, 2006 and on November 30th, 2006 10-2006-0118340 number and 10-2006-0119837 number, the whole disclosure content of these two applications is merged in this paper by reference.
Technical field
This disclosure content relates in general to a kind of vacuum cleaner, more specifically, relates to a kind of mobile blade that is connected to the lower end of cleaner.
Background technology
Usually, the lower surface place of vacuum cleaner has the inlet and the blade of suction dust or dirt, and described blade is outstanding downwards with dust or dirt near the collection inlet, thereby improves cleaning efficiency.
Fig. 1 is the perspective view of the lower surface of conventional vacuum cleaner (robotic vacuum cleaner particularly).
As shown in fig. 1, robot cleaner comprises cleaner body 1, driving wheel 2, inlet 3, vibrator 4 and blade 5.For from wanting the clean Surface suction and remove dust or dirt, cleaner body 1 has disc-type electric motor (pan motor) and the filter that is installed in it.Driving wheel 2 is positioned on the lower surface of cleaner body 1 so that cleaner moves.Inlet 3 is formed near the driving wheel 2, with from wanting clean Surface suction dust or dirt.Vibrator 4 is placed in the inlet 3 with rotary way, sticks to dust or the dirt of wanting on the clean Surface to wipe, and therefore makes inlet suction dust or dirt at an easy rate.Near the to collect dust or dirt towards Way in of inlet 36 given prominence to and be arranged on to blade 5.
Aforesaid robot cleaner by being placed in sensor 6 sensing clear area and the barriers in the cleaner, and moves on the clear area of institute's sensing under the control of controller (not shown) everywhere.At this moment, when vibrator 4 rotates, attach to and want most dust on the clean Surface or dirt via 3 suction that enter the mouth in the clear area of institute's sensing.Dust that all the other do not remove or dirt are caught by blade 5, and therefore collect towards Way in, thereby for the second time via the inlet suction.
Yet in this case, if clean Surface has high frictional force, as on carpet or analog, the problem of appearance is that the blade given prominence to produces friction with wanting clean Surface, and so in cleaner moves as sizable load.
Summary of the invention
An aspect of this disclosure content is to address the above problem at least and/or shortcoming, and the advantage of the following stated is provided at least.Therefore, an aspect of this disclosure content provides a kind of cleaner, described cleaner can optionally make blade towards wanting clean Surface to stretch out when wanting clean Surface to have low-frictional force, thereby raising cleaning efficiency, and when wanting clean Surface to have high frictional force, described blade is rotated towards the body direction, thereby reduce the moving load of described cleaner.
In order to obtain the above aspect of this disclosure content, a kind of cleaner is provided, described cleaner comprises body, near the blade the lower end of described body is connected inlet and the rotating unit that is used to make described blade rotation of described cleaner.
At this moment, preferably, but not necessarily, when the frictional force of wanting clean Surface during less than first frictional force between described blade and the carpet, described rotating unit makes described blade towards wanting clean Surface to rotate, and described blade is rotated during greater than described first frictional force towards the body direction when the frictional force of wanting clean Surface.
Described first frictional force can be confirmed as in a plurality of friction force value between a plurality of carpets and the described blade mean value of less 20% friction force value.
In addition, spatial accommodation can be formed in the described body, makes described blade insert in the described spatial accommodation.Protuberance can be formed in the described spatial accommodation to limit the rotation of described blade.
Described rotating unit can comprise the turning cylinder that is formed on the described blade, be formed at connecting hole and elastic component in the described body, the described turning cylinder of described blade inserts in the described connecting hole, and described elastic component has an end that is connected on the described blade and is connected to the other end on the described body.
Preferably, but not necessarily, described elastic component has elastic force, described elastic force less than first frictional force between described blade and the carpet greater than second frictional force between described blade and the floor.
Described second frictional force can be confirmed as in a plurality of friction force value between a plurality of floors and the described blade mean value of bigger 20% friction force value.
More preferably, but not necessarily, the described elastic force of described elastic component is first frictional force between described blade and the carpet.
Preferably, but not necessarily, described elastic component is a helical spring.
Groove can be formed on the described blade, makes a described helical spring end insert in the described groove.
Alternatively, described rotating unit can comprise with rotary way and is connected to turning cylinder, framework and elastic component on the described body, wherein said frame shape becomes to be made described blade be connected on it and has the end that is fixed on the described turning cylinder, and described elastic component has an end that is connected on the described framework and is connected to the other end on the described body.
At this moment, preferably, but not necessarily, described elastic component comprises spring.
Provide a kind of cleaner on the other hand according to this disclosure content, described cleaner comprises the body and the blade of described cleaner, described blade makes described blade and want the angle of clean Surface and to want the size of the frictional force between the clean Surface to regulate according to described blade near the lower end of described body is connected inlet.
At this moment, preferably, but not necessarily, when the frictional force of wanting clean Surface during less than first frictional force between described blade and the carpet, described blade is towards rotating perpendicular to the direction of wanting clean Surface, and when the frictional force of wanting clean Surface during greater than described first frictional force, described blade rotates towards the body direction.
Spatial accommodation can be formed in the described body, makes described blade insert in the described spatial accommodation.
In addition, preferably, but not necessarily, protuberance can be formed in the described spatial accommodation to limit the rotation of described blade.
Description of drawings
Above-mentioned aspect of this disclosure content and further feature describe its exemplary embodiments in detail by the reference accompanying drawing will become clearer, wherein:
Fig. 1 is the perspective view of lower surface of the cleaner (robot cleaner particularly) of prior art;
Fig. 2 A is the perspective view that illustration is installed a vaned part, and wherein blade is installed on the lower surface according to the cleaner of the exemplary embodiments of this disclosure content;
Fig. 2 B is the perspective view that only amplifies the blade of illustration Fig. 2 A;
Fig. 3 A is the perspective view of the operation of blade when wanting clean Surface to have less friction of illustration Fig. 2 A;
Fig. 3 B is the perspective view of the operation of blade when wanting clean Surface to have big frictional force of illustration Fig. 2 A;
Fig. 4 A is the part cut view of detailed illustration according to the vaned part of installation of another exemplary embodiments of this disclosure content; And
Fig. 4 B is the cut view of part of the operation of blade when wanting clean Surface to have big frictional force of illustration Fig. 4 A.
Identical Reference numeral will be understood to be in represents components identical, feature and structure among all figure.
The specific embodiment
Hereinafter, describe cleaner with reference to the accompanying drawings in detail according to exemplary embodiments of the present invention.
Fig. 2 A is the perspective view that illustration is installed a vaned part, and wherein blade is installed on the lower surface according to the cleaner of the exemplary embodiments of this disclosure content; Fig. 2 B is the perspective view that only amplifies the blade of illustration Fig. 2 A.With reference to Fig. 2 A, comprise blade 23, rotating unit 24 and spatial accommodation 25 according to the cleaner of the exemplary embodiments of this disclosure content.Blade 23 is connected near the inlet 22, in order at the lower end of the body 21 of cleaner from wanting clean Surface suction dust or dirt.Rotating unit 24 rotates blade 23.Spatial accommodation 25 is formed in the body, makes blade 23 be contained in the described spatial accommodation.
Rotating unit 24 is provided with turning cylinder 23a, connecting hole 21a and helical spring 26.Turning cylinder 23a is formed at the two ends of blade 23.Connecting hole 21a is formed in the body 21, makes the turning cylinder 23a of blade 23 insert in the described connecting hole.Have an end that is connected on the blade 23 and be connected to the other end on the body 21 as the helical spring 26 of elastic component.Insert an end in the groove 23b be formed on the blade 23 and be connected to the other end on the body 21 because helical spring 26 has, therefore described helical spring applies rotatory force to blade 23.In addition, protuberance 25a (see figure 3) is formed on the spatial accommodation 25 that inserts blade 23, with the rotation of limit blade 23.
The elastic force of helical spring 26 is configured to less than first frictional force between blade 23 and the carpet greater than second frictional force between blade 23 and the floor (for example, floorboards of wood or similar floor).
Therefore, when the frictional force of wanting clean Surface during less than first frictional force, rotating unit 24 makes blade 23 towards wanting clean Surface to rotate, and blade 23 is being rotated during greater than first frictional force on the direction of body 21 when the frictional force of wanting clean Surface.
Fig. 3 A is an illustration blade 23 at the perspective view of the operation of the frictional force of wanting clean Surface during less than first frictional force, and for example, clean Surface is smooth floor 31.When wanting clean Surface to have less friction, as in smooth floor 31, blade 23 is rotating on the direction on smooth floor 31 by the rotatory force of helical spring 26.At this moment, blade 23 remains under the state that is approximately perpendicular to floor 31 by protuberance 25a.According to this state, blade 23 is 31 collection dust or dirts from the floor.
Fig. 3 B is an illustration blade 23 at the perspective view of the operation of the frictional force of wanting clean Surface during greater than first frictional force, and for example, clean Surface is carpet 32.In this case, because the rotatory force that the frictional force between blade 23 and the carpet 32 is produced greater than helical spring 26, so blade 23 rotating on the direction of body 21, and so is contained at least in part in the spatial accommodation 25.
According to this situation, blade 23 forms sloped contact to reduce the moving load of cleaner with carpet 32.
Fig. 4 A is the part cut view of detailed illustration according to the vaned part of installation in the cleaner of another exemplary embodiments of this disclosure content.
With reference to Fig. 4 A, comprise blade 112 and rotating unit 113 according to the cleaner of another exemplary embodiments of this disclosure content.Blade 112 is connected near the inlet (not shown), in order at the lower end of the body 111 of cleaner from wanting clean Surface suction dust or dirt.Rotating unit 113 makes blade 112 rotate around the turning cylinder 117 that is connected on the body 111.In order to hold rotating unit 112, spatial accommodation 114 is formed in the body 111.Protuberance 114a is formed into spatial accommodation 114a and goes up to limit the rotation of rotating unit 113.
Fig. 4 A illustrates blade 112 as mentioned above in the operation of the frictional force of wanting clean Surface during less than first frictional force between blade and the carpet, and for example, clean Surface is smooth floor 118.When wanting clean Surface to have less friction, as in smooth floor 118, rotating frame 115 is rotating on the direction on floor 118 by the tension force of spring 116.At this moment, rotating frame 115 remains on floor 118 by protuberance 114a and is under the horizontal state.According to this state, be connected to blade 112 on the rotating frame 115 and 118 collect dust or dirts from the floor.
Fig. 4 B is an illustration blade 112 at the view of the operation of the frictional force of wanting clean Surface during greater than first frictional force, and for example, clean Surface is carpet 121.In this case, owing to the rotatory force of the frictional force between blade 112 and the carpet 121 greater than rotating frame 115, so spring 116 is compressed.As a result, rotating frame 115 is rotating on the direction of body 111, and therefore is contained at least in part in the spatial accommodation 114.According to this situation, the blade 112 that is connected on the rotating frame 115 also forms sloped contact to reduce the moving load of cleaner with carpet 121.
The size of first frictional force determines that by the frictional force between the carpet of selling on employed blade in the illustrative embodiments of measuring this disclosure content and a plurality of market wherein blade 113 rotates by described first frictional force.That is, after the friction force value of measuring between a plurality of carpets and the blade, for example, the mean value of less 20% friction force value can be confirmed as first frictional force in a plurality of friction force value between a plurality of carpets and the blade.If determine first frictional force in aforesaid mode, then blade can rotate on most of carpets of being sold on the market.
In addition, can by measure friction force value between the floor of being sold on blade and a plurality of market, and the mean value of following the friction force value of 20% (for example) bigger in a plurality of friction force value between a plurality of floors and the blade be defined as the size that second frictional force is set second frictional force.If determine second frictional force in mode as mentioned above, then blade can keep plumbness on most of floors of being sold on the market.
After determining first and second frictional force, the elastic force of spring be configured to make its less than first frictional force greater than second frictional force.More preferably, but not necessarily, the elastic force of spring is configured to and first frictional force keeps balance.
Present from above stated specification is clear, exemplary embodiments according to this disclosure content, when wanting clean Surface to have low-frictional force, cleaner makes blade towards wanting clean Surface to rotate with from wanting clean Surface collection dust or dirt, thereby raising cleaning efficiency, and when wanting clean Surface to have high frictional force, described cleaner makes blade rotate reducing friction towards the body direction, thereby reduces the moving load of cleaner.
Although for the principle of this disclosure content of illustration has shown and illustrated the representative illustration embodiment of this disclosure content, yet this disclosure content is not limited to concrete exemplary embodiments.Will be understood that those of ordinary skills can carry out various modifications and changes under the prerequisite of essence that does not depart from disclosure content defined by the appended claims and scope.Therefore, should be appreciated that this modification, change and equivalents thereof include in the scope of this disclosure content.
Claims (18)
1. cleaner comprises:
The body of described cleaner;
Near the lower end of described body is connected inlet blade; And
Be used to make the rotating unit of described blade rotation.
2. cleaner according to claim 1, wherein, when the frictional force of wanting clean Surface during less than first frictional force between described blade and the carpet, described rotating unit makes described blade towards wanting clean Surface to rotate, and when the frictional force of wanting clean Surface during greater than described first frictional force, described rotating unit makes described blade rotate towards the body direction.
3. cleaner according to claim 2, wherein said first frictional force are confirmed as in a plurality of friction force value between a plurality of carpets and the described blade mean value of less 20% friction force value.
4. cleaner according to claim 1 further comprises being formed at described intrinsic spatial accommodation, makes that described blade is contained in the described spatial accommodation at least in part when described rotating unit makes described blade towards described body direction rotation.
5. cleaner according to claim 4 further comprises the protuberance that is formed in the described spatial accommodation, limits the rotation of described blade when wanting the clean Surface rotation to make described blade at described rotating unit.
6. cleaner according to claim 1, wherein said rotating unit comprises:
Be formed at the turning cylinder on the described blade;
Be formed at the connecting hole in the described body, make the described turning cylinder of described blade insert in the described connecting hole; And
Elastic component, described elastic component have an end that is connected on the described blade and are connected to the other end on the described body.
7. cleaner according to claim 6, wherein said elastic component has elastic force, described elastic force less than first frictional force between described blade and the carpet greater than second frictional force between described blade and the floor.
8. cleaner according to claim 7, wherein said second frictional force are confirmed as in a plurality of friction force value between a plurality of floors and the described blade mean value of bigger 20% friction force value.
9. cleaner according to claim 6, wherein said elastic component have the elastic force less than first frictional force between described blade and the carpet.
10. cleaner according to claim 9, wherein said elastic component comprises helical spring.
11. cleaner according to claim 10, wherein said blade comprises groove formed thereon, makes a described helical spring end insert in the described groove.
12. cleaner according to claim 1, wherein said rotating unit comprises:
Be connected to turning cylinder on the described body with rotary way;
Framework, described frame shape become to be made described blade be connected on it and has the end that is fixed on the described turning cylinder; And
Elastic component, described elastic component have an end that is connected on the described framework and are connected to the other end on the described body.
13. cleaner according to claim 12, wherein said elastic component comprises spring.
14. a vacuum cleaner comprises:
The body of described cleaner; And
Blade, described blade make described blade and want the angle of clean Surface and to want the size of the frictional force between the clean Surface to regulate according to described blade near the lower end of described body is connected inlet.
15. cleaner according to claim 14, wherein, when the frictional force of wanting clean Surface during less than first frictional force between described blade and the carpet, described blade is towards rotating perpendicular to the direction of wanting clean Surface, and when the frictional force of wanting clean Surface during greater than described first frictional force, described blade rotates towards the body direction.
16. cleaner according to claim 14 further comprises the spatial accommodation that is formed in the described body, make when described blade when the body direction is rotated, described blade is contained in the described spatial accommodation at least in part.
17. cleaner according to claim 16 further comprises the protuberance that is formed in the described spatial accommodation, to limit the rotation of described blade towards perpendicular to the direction rotation of wanting clean Surface the time at described blade.
18. cleaner according to claim 14, wherein said cleaner are robotic vacuum cleaner.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060118340A KR100809737B1 (en) | 2006-11-28 | 2006-11-28 | Cleaner |
| KR1020060118340 | 2006-11-28 | ||
| KR1020060119837 | 2006-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101190114A true CN101190114A (en) | 2008-06-04 |
Family
ID=39103019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101025082A Pending CN101190114A (en) | 2006-11-28 | 2007-05-14 | Vacuum cleaner with mobile blade |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1927310A1 (en) |
| KR (1) | KR100809737B1 (en) |
| CN (1) | CN101190114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767621A (en) * | 2012-10-17 | 2014-05-07 | 科沃斯机器人科技(苏州)有限公司 | Floor cleaning device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2010201002B2 (en) | 2009-03-20 | 2014-06-26 | Bissell Inc. | Vacuum accessory tool |
| DE102015105224A1 (en) * | 2015-04-07 | 2016-10-13 | Vorwerk & Co. Interholding Gmbh | Device for a suction fan having a cleaning device |
| KR101908421B1 (en) | 2016-12-30 | 2018-10-16 | 엘지전자 주식회사 | Cleaner |
| KR101935946B1 (en) | 2017-01-19 | 2019-01-07 | 엘지전자 주식회사 | Cleaner |
| KR102448087B1 (en) | 2017-01-19 | 2022-09-28 | 엘지전자 주식회사 | Cleaner |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3270248B2 (en) * | 1993-10-22 | 2002-04-02 | シャープ株式会社 | Electric vacuum cleaner |
| FR2729842B1 (en) * | 1995-01-27 | 1997-04-18 | Olivier Ets Georges | VACUUM CLEANER |
| KR20000000913U (en) * | 1998-06-18 | 2000-01-15 | 전주범 | vacuum cleaner |
| KR100531825B1 (en) * | 2003-10-21 | 2005-12-01 | 엘지전자 주식회사 | Vacuum cleaner suction head having join/unjoin type brush |
| KR100544480B1 (en) * | 2004-05-12 | 2006-01-24 | 삼성광주전자 주식회사 | Automatic cleaning apparatus |
| KR100582519B1 (en) * | 2004-07-09 | 2006-05-23 | 삼성광주전자 주식회사 | A suction brush assembly of a vacuum cleaner |
| KR100677276B1 (en) * | 2005-04-28 | 2007-02-02 | 엘지전자 주식회사 | Apparatus for cleaning the front portion of the driving wheel of a robot-cleaner |
-
2006
- 2006-11-28 KR KR1020060118340A patent/KR100809737B1/en not_active IP Right Cessation
-
2007
- 2007-05-14 CN CNA2007101025082A patent/CN101190114A/en active Pending
- 2007-07-30 EP EP07014911A patent/EP1927310A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767621A (en) * | 2012-10-17 | 2014-05-07 | 科沃斯机器人科技(苏州)有限公司 | Floor cleaning device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1927310A1 (en) | 2008-06-04 |
| KR100809737B1 (en) | 2008-03-06 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |