EP1806239A1 - Eraser - Google Patents
Eraser Download PDFInfo
- Publication number
- EP1806239A1 EP1806239A1 EP05774465A EP05774465A EP1806239A1 EP 1806239 A1 EP1806239 A1 EP 1806239A1 EP 05774465 A EP05774465 A EP 05774465A EP 05774465 A EP05774465 A EP 05774465A EP 1806239 A1 EP1806239 A1 EP 1806239A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- receptacle
- chamber
- dust
- compartment
- board eraser
- 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- Withdrawn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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
- B43L19/0006—Erasers, rubbers, or erasing devices; Holders therefor motor-driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
- B43L19/0037—Eraser cleaners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
- B43L19/0056—Holders for erasers
- B43L19/0068—Hand-held holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
- B43L19/04—Fibrous erasers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/04—Wiper holders
Definitions
- the invention relates to a board eraser including a compact structure and a light weight.
- Typical board erasers comprise the following kinds:
- the inventor is to overcome the drawbacks and to develop the vacuum board eraser of the invention.
- the invention is to provide a vacuum board eraser including a compact structure and a light weight.
- the invention provides a vacuum board eraser comprising a receptacle including a chamber and a compartment formed on the upper portion and communicating with the chamber, a brush engaged into the chamber of the receptacle and disposed beside the communicating portion of the chamber and the compartment; a frame secured in the chamber of the receptacle, and including two rollers, and a rubbing cloth engaged around the rollers and engageable with the brush; a fan device engaged into the compartment and a motor coupled to the fan device for driving the fan device; a container attached to the receptacle and disposed between the chamber and the compartment, and the fan device draws the dust from the chamber of the receptacle into the container.
- the receptacle includes two rails, the container includes two side tracks for engaging with the rails and for detachably attaching the container to the receptacle, and a dust net engaged into the container for collecting the dust.
- a cover is disposed on top of the compartment of the receptacle and a switch disposed on the cover, and a battery disposed in the compartment of the receptacle.
- One or more conductors are disposed on the receptacle and coupled to the battery for electrically coupling to a charging base.
- the frame includes two flaps each having an oblong hole for slidably receiving end blocks of spindles of the rollers, and a spring engaged with the end blocks of the spindles
- the receptacle includes a rim attached to the peripheral portion of the chamber of the receptacle and made of soft materials.
- the invention is to improve the Chinese Patent Application No. ZL03236805.X , entitled "board eraser”.
- a vacuum board eraser comprises a receptacle 10, a brush 20, four rollers 40, a frame 60, a rubbing cloth 30, a rim 70, a fan device 80 and a container 90, wherein:
- rollers 40 and the spindles 50 may then be assembled and engaged into the frame 60 as shown in FIG. 3.
- the rubbing cloth 30 may erase the dust from the blackboard and may be moved into the chamber 11 of the receptacle 10, and the brush 20 may scrub the rubbing cloth 30 to remove the dust.
- the switch 24 may be actuated to operate the fan device 80 which may draw the air and the dust through the opening 110 of the receptacle 10 and into the container 90, and the dust net 91 may block the dust to allow the dust to be collected in the container 90, and the container 90 may be easily disengaged from the receptacle 10 for dumping the dust.
- the springs 51 may bias the end blocks 500 of the outer spindle 50 of the roller 40 at one end of the frame 60 to allow the roller 40 to be moved to straighten the rubbing cloth 30.
- the board eraser may be engaged into the charging base A which may charge the batteries 82 that are engaged in the compartment 13 of the receptacle 10.
- the cover 16 may be disposed on top of the compartment 13 of the receptacle 10, and the batteries 82 may be changed with the new ones by opening the cover 16, after the batteries 82 have been consumed.
- the receptacle 10 may include an electric cable coupled to the batteries 82 for energizing the batteries 82.
- the board eraser is not limited to the embodiment as shown in the drawings, but include the changing of the invention.
Abstract
A board eraser includes a receptacle having a chamber, a brush engaged into the chamber of the receptacle, a frame secured in the chamber of the receptacle, and having two or more rollers, and a rubbing cloth engaged around the rollers and engageable with the brush, a container attached to the receptacle and having a dust net, and a fan device for drawing the dust into the container, the dust may be collected in the receptacle for preventing from being breathed by people.
Description
- The invention relates to a board eraser including a compact structure and a light weight.
- Typical board erasers comprise the following kinds:
- First,
Taiwanese Patent Application No. 83213896 - 1. the rollers include a curved structure and include a line-contact with the rubbing cloth and the rubbing cloth may be curved into the rollers such that the rubbing cloth may not be easily cleaned by the dust loosening brush.
- 2. the rubbing cloth may be curved and engaged into the curved rollers and may have a small contact area with the blackboard and thus may not suitably erase the dust from the blackboard.
- 3. the dust removed from the rubbing cloth will be collected in a casing, but the dust may flow into the air when moving the board eraser such that the dust may be breathed by people.
- Second,
Taiwanese Patent Application No. 87206860 - 1. the dust may be sticked onto the rubbing cloth such that the rubbing cloth may not be used to suitably erase the blackboard.
- 2. the dust may be sticked onto the rubbing cloth and may not be suitably vacuumed by the vacuum device unless the vacuum device includes a stronger power.
- 3. the vacuum device is coupled to the board eraser with a hose which may increase the weight of the board eraser and may interfere the erasing operation of the board eraser.
- Third, Taiwanese Patent Application No. 91221547 is entitled "improved board eraser" and includes the following drawbacks:
- 1. the dust may be sticked onto the rubbing cloth and may flow into the air when moving the board eraser such that the dust may be breathed by people.
- 2. the board eraser includes a vacuum device coupled to a hose for drawing and collecting the dust into the vacuum device, however, the hose may increase the weight of the board eraser and may interfere the erasing operation of the board eraser.
- The inventor is to overcome the drawbacks and to develop the vacuum board eraser of the invention.
- The invention is to provide a vacuum board eraser including a compact structure and a light weight.
- The invention provides a vacuum board eraser comprising a receptacle including a chamber and a compartment formed on the upper portion and communicating with the chamber, a brush engaged into the chamber of the receptacle and disposed beside the communicating portion of the chamber and the compartment; a frame secured in the chamber of the receptacle, and including two rollers, and a rubbing cloth engaged around the rollers and engageable with the brush; a fan device engaged into the compartment and a motor coupled to the fan device for driving the fan device; a container attached to the receptacle and disposed between the chamber and the compartment, and the fan device draws the dust from the chamber of the receptacle into the container.
- The receptacle includes two rails, the container includes two side tracks for engaging with the rails and for detachably attaching the container to the receptacle, and a dust net engaged into the container for collecting the dust. A cover is disposed on top of the compartment of the receptacle and a switch disposed on the cover, and a battery disposed in the compartment of the receptacle. One or more conductors are disposed on the receptacle and coupled to the battery for electrically coupling to a charging base. The frame includes two flaps each having an oblong hole for slidably receiving end blocks of spindles of the rollers, and a spring engaged with the end blocks of the spindles The receptacle includes a rim attached to the peripheral portion of the chamber of the receptacle and made of soft materials.
- FIGS. 1, 2 are partial exploded views of a board eraser;
- FIG. 3 is a perspective view of a roller supporting device,
- FIG. 4 is a bottom perspective view of the board eraser;
- FIG. 5 is a cross sectional view;
- FIG. 6 is a side plan view of the vacuum board eraser; and
- FIG. 7 is a partial exploded view of the vacuum board eraser.
-
- 10
- receptacle
- 11
- chamber
- 110
- opening
- 12
- space
- 120
- rail
- 13
- compartment
- 130
- entrance
- 14
- conductor
- 15
- orifice
- 16
- cover
- 17
- switch
- 20
- brush
- 30
- rubbing cloth
- 40
- roller
- 50
- spindle
- 500
- end block
- 51
- spring
- 52
- fastener
- 60
- frame
- 61
- gap
- 62
- flap
- 63
- oblong hole
- 70
- rim
- 80
- fan deice
- 81
- motor
- 82
- battery
- 90
- container
- 900
- side track
- 901
- space
- 902
- inlet
- 903
- open end
- 91
- dust bag or net
- 910
- coupler
- A
- charging base
- The invention is to improve the
Chinese Patent Application No. ZL03236805.X - Referring to FIGS. 1-4, a vacuum board eraser comprises a
receptacle 10, abrush 20, fourrollers 40, aframe 60, a rubbingcloth 30, arim 70, afan device 80 and acontainer 90, wherein: - the
receptacle 10 includes achamber 11 opened downwardly, aspace 12 and acompartment 13 formed on the upper portion, anopening 110 communicating with thespace 12, two sets oforifices 15 formed in two sides, tworails 120 disposed on two sides of thespace 12, anentrance 130 communicating thecompartment 13 with thespace 12,conductors 14 disposed on one side of thecompartment 13, acover 16 disposed on top of thereceptacle 10 and having aswitch 17; - the
brush 20 is planar and attached in thechamber 11 of thereceptacle 10 and disposed beside theopening 110 for contacting with one side of the rubbingcloth 30; - the
rollers 40 are rotatably disposed in theframe 60 withspindles 50, and theouter spindle 50 has twoend blocks 500 each engaged with aspring 51; - the
frame 60 includes twoflaps 62 for securing to theorifices 15 of thereceptacle 10 withfasteners 52, and fourgaps 61 for receiving therollers 40, theflaps 62 each include anoblong hole 63 for slidably receiving the end blocks 500 of theouter spindle 50 and for receiving thespring 51; - the rubbing
cloth 30 is engaged around therollers 40 and confined between theflaps 62 of theframe 60 for preventing the rubbingcloth 30 from being disengaged from therollers 40; - the
rim 70 is made of soft materials for attaching to the peripheral portion of thechamber 11 of thereceptacle 10, and therim 70 may prevent the blackboard from being scratched by the board eraser; - the
fan device 80 is disposed in thecompartment 13 and coupled to amotor 81 which may actuate thefan device 80 to draw the air and the dust through theentrance 130, fourbatteries 82 disposed in thecompartment 13 for energizing themotor 81 and coupled to theconductors 14 for electrically coupling to a charging base A (FIG. 7); - the
container 90 includes twoside tracks 900 for engaging with therails 120 and for detachably attaching thecontainer 90 to thereceptacle 10, and includes aspace 901 and aninlet 902 communicating with theopening 110 of thereceptacle 10 for communicating with thechamber 11 of thereceptacle 10, and includes anopen end 903 for communicating with theentrance 130 of thereceptacle 10, a dust bag or net 91 is engaged into thespace 901 of thecontainer 90 and includes acoupler 910 secured to theopen end 903 of thespace 901 of thecontainer 90. - The
rollers 40 and thespindles 50 may then be assembled and engaged into theframe 60 as shown in FIG. 3. - As shown in FIG. 4, the rubbing
cloth 30 may erase the dust from the blackboard and may be moved into thechamber 11 of thereceptacle 10, and thebrush 20 may scrub the rubbingcloth 30 to remove the dust. - The switch 24 may be actuated to operate the
fan device 80 which may draw the air and the dust through theopening 110 of thereceptacle 10 and into thecontainer 90, and thedust net 91 may block the dust to allow the dust to be collected in thecontainer 90, and thecontainer 90 may be easily disengaged from thereceptacle 10 for dumping the dust. - As shown in FIGS. 5 and 6, the
springs 51 may bias the end blocks 500 of theouter spindle 50 of theroller 40 at one end of theframe 60 to allow theroller 40 to be moved to straighten the rubbingcloth 30. - As shown in FIG. 7, the board eraser may be engaged into the charging base A which may charge the
batteries 82 that are engaged in thecompartment 13 of thereceptacle 10. - The
cover 16 may be disposed on top of thecompartment 13 of thereceptacle 10, and thebatteries 82 may be changed with the new ones by opening thecover 16, after thebatteries 82 have been consumed. - The
receptacle 10 may include an electric cable coupled to thebatteries 82 for energizing thebatteries 82. - The invention has the following advantages:
- 1. the rubbing
cloth 30 is supported by theframe 60 and engageable with thebrush 20 for allowing the rubbingcloth 30 to have a greater contact area with the blackboard. - 2. the dust removed from the rubbing
cloth 30 by thebrush 20 may be collected within thecontainer 90 by thefan device 80. - 3. the
fan device 80 is disposed in thereceptacle 10 and will not interfere the operation of the board eraser. - The board eraser is not limited to the embodiment as shown in the drawings, but include the changing of the invention.
Claims (6)
- A board eraser characterized in that, comprising:a receptacle includes a chamber and a compartment formed on the upper portion and communicating with the chamber;a brush engaged into the chamber of the receptacle and disposed beside the communicating portion of the chamber and the compartment;a frame secured in the chamber of the receptacle, and including two rollers, and a rubbing cloth engaged around the rollers and engageable with the brush;a fan device engaged into the compartment and a motor coupled to the fan device for driving the fan device;a container attached to the receptacle and disposed between the chamber and the compartment, and the fan device draws the dust from the chamber of the receptacle into the container.
- The board eraser as claimed in claim 1, wherein the receptacle includes two rails, the container includes two side tracks for engaging with the rails and for detachably attaching the container to the receptacle, and a dust net engaged into the container for collecting the dust.
- The board eraser as claimed in claim 1, wherein a cover is disposed on top of the compartment of the receptacle and a switch disposed on the cover, and a battery disposed in the compartment of the receptacle.
- The board eraser as claimed in claim 3, wherein conductors are disposed on the receptacle and coupled to the battery for electrically coupling to a charging base.
- The board eraser as claimed in claim 1, wherein the frame includes two flaps each having an oblong hole for slidably receiving end blocks of spindles of the rollers, and a spring engaged with the end blocks of the spindles.
- The board eraser as claimed in claim 1, wherein the receptacle includes a rim attached to the peripheral portion of the chamber of the receptacle and made of soft materials.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2004100742258A CN100418792C (en) | 2004-09-03 | 2004-09-03 | Blackboard eraser |
PCT/CN2005/001282 WO2006024219A1 (en) | 2004-09-03 | 2005-08-18 | Eraser |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1806239A1 true EP1806239A1 (en) | 2007-07-11 |
EP1806239A4 EP1806239A4 (en) | 2009-11-25 |
Family
ID=35999697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05774465A Withdrawn EP1806239A4 (en) | 2004-09-03 | 2005-08-18 | Eraser |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1806239A4 (en) |
KR (1) | KR20070038117A (en) |
CN (1) | CN100418792C (en) |
WO (1) | WO2006024219A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100843278B1 (en) * | 2006-07-05 | 2008-07-08 | (주)베이온 | Usb memory having cleaner |
CN103317917A (en) * | 2012-03-25 | 2013-09-25 | 上海华师京城高新技术开发有限公司 | Multifunctional electronic blackboard eraser |
CN105818587A (en) * | 2016-06-13 | 2016-08-03 | 辛顺强 | Dust-free blackboard eraser |
CN106821143A (en) * | 2017-01-17 | 2017-06-13 | 湖州佳星电机有限公司 | A kind of dust suction flat board with air-cleaning function is wiped |
CN107053913B (en) * | 2017-05-04 | 2019-02-19 | 聊城职业技术学院 | A kind of teaching intelligent electric blackboard eraser |
CN111993821A (en) * | 2019-11-10 | 2020-11-27 | 孟庆龙 | Wrapping sleeve special for round eraser for removing dandruff and using method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2108434A (en) * | 1981-10-23 | 1983-05-18 | Hua Yu Wen | Electric blackboard eraser |
US4941225A (en) * | 1989-11-13 | 1990-07-17 | Liao Su Land | Automatic chalk-powder collecting device for blackboard eraser |
US5216776A (en) * | 1992-01-27 | 1993-06-08 | Dennison Daniel C | Automatic blackboard eraser apparatus |
US20030000042A1 (en) * | 2001-06-29 | 2003-01-02 | Wang Yu Long | Eraser having selectively openable and closable aperatures |
US20030037404A1 (en) * | 2001-08-23 | 2003-02-27 | Wu Tung Ming | Electronic blackboard eraser |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2186670Y (en) * | 1994-04-17 | 1995-01-04 | 阮忠卫 | Electric dust-absorbing blackboard eraser |
JPH08267995A (en) * | 1995-03-30 | 1996-10-15 | Shinji Inoue | Blackboard eraser equipped with vacuum cleaner |
US5537711A (en) * | 1995-05-05 | 1996-07-23 | Tseng; Yu-Che | Electric board cleaner |
CN2226536Y (en) * | 1995-06-28 | 1996-05-08 | 黄昌艺 | Electric dust collecting blackboard eraser |
CN2238748Y (en) * | 1995-08-17 | 1996-10-30 | 陈镜尧 | Eraser cleaner cabable of feeling chalk dust capacity |
JP2001039089A (en) * | 1999-07-29 | 2001-02-13 | Servo Technos:Kk | Erasing device |
CN2435247Y (en) * | 2000-06-23 | 2001-06-20 | 王黔川 | Chalk dust absorbing eraser |
CN2501699Y (en) * | 2001-09-29 | 2002-07-24 | 孟胜贤 | Electric dust-absorption blackboard eraser |
CN2519738Y (en) * | 2001-10-12 | 2002-11-06 | 张大龙 | Dust suction type blackboard eraser |
CN2609776Y (en) * | 2003-01-28 | 2004-04-07 | 赖锡璜 | Eraser structure |
CN2741792Y (en) * | 2004-09-03 | 2005-11-23 | 赖锡璜 | Blackboard eraser |
-
2004
- 2004-09-03 CN CNB2004100742258A patent/CN100418792C/en not_active Expired - Fee Related
-
2005
- 2005-08-18 WO PCT/CN2005/001282 patent/WO2006024219A1/en active Application Filing
- 2005-08-18 KR KR1020077001667A patent/KR20070038117A/en not_active Application Discontinuation
- 2005-08-18 EP EP05774465A patent/EP1806239A4/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2108434A (en) * | 1981-10-23 | 1983-05-18 | Hua Yu Wen | Electric blackboard eraser |
US4941225A (en) * | 1989-11-13 | 1990-07-17 | Liao Su Land | Automatic chalk-powder collecting device for blackboard eraser |
US5216776A (en) * | 1992-01-27 | 1993-06-08 | Dennison Daniel C | Automatic blackboard eraser apparatus |
US20030000042A1 (en) * | 2001-06-29 | 2003-01-02 | Wang Yu Long | Eraser having selectively openable and closable aperatures |
US20030037404A1 (en) * | 2001-08-23 | 2003-02-27 | Wu Tung Ming | Electronic blackboard eraser |
Non-Patent Citations (1)
Title |
---|
See also references of WO2006024219A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006024219A1 (en) | 2006-03-09 |
EP1806239A4 (en) | 2009-11-25 |
CN100418792C (en) | 2008-09-17 |
KR20070038117A (en) | 2007-04-09 |
CN1743186A (en) | 2006-03-08 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 20070403 |
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DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20091026 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Effective date: 20100105 |