WO2004045782A3 - An electromotive chalk eraser - Google Patents

An electromotive chalk eraser Download PDF

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Publication number
WO2004045782A3
WO2004045782A3 PCT/KR2003/000097 KR0300097W WO2004045782A3 WO 2004045782 A3 WO2004045782 A3 WO 2004045782A3 KR 0300097 W KR0300097 W KR 0300097W WO 2004045782 A3 WO2004045782 A3 WO 2004045782A3
Authority
WO
WIPO (PCT)
Prior art keywords
chalk
electromotive
eraser
chalk eraser
present
Prior art date
Application number
PCT/KR2003/000097
Other languages
French (fr)
Other versions
WO2004045782A2 (en
Inventor
Keum Yun Seo
Original Assignee
Smc Korea Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Smc Korea Co Ltd filed Critical Smc Korea Co Ltd
Priority to AU2003302032A priority Critical patent/AU2003302032A1/en
Publication of WO2004045782A2 publication Critical patent/WO2004045782A2/en
Publication of WO2004045782A3 publication Critical patent/WO2004045782A3/en

Links

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
    • B43L21/00—Blackboard or slate cleaning devices
    • B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust

Abstract

The present invention relates to an electromotive chalk eraser which can prevent harmful influence of the chalk dust generated while erasing the blackboard on students and teachers. The electromotive chalk eraser of the present invention can easily and simply remove the adsorbed chalk dust therefrom to reduce the inconveniences caused in the course of re-using the chalk eraser, and it can be repeatedly used for a long time without being worn out, thus eliminating costs for exchanging old chalk erasers for new ones.
PCT/KR2003/000097 2002-11-19 2003-01-16 An electromotive chalk eraser WO2004045782A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003302032A AU2003302032A1 (en) 2002-11-19 2003-01-16 An electromotive chalk eraser

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2002-0071986 2002-11-19
KR1020020071986A KR20040043619A (en) 2002-11-19 2002-11-19 Electromotion Board Eraser

Publications (2)

Publication Number Publication Date
WO2004045782A2 WO2004045782A2 (en) 2004-06-03
WO2004045782A3 true WO2004045782A3 (en) 2005-03-31

Family

ID=32322253

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2003/000097 WO2004045782A2 (en) 2002-11-19 2003-01-16 An electromotive chalk eraser

Country Status (4)

Country Link
KR (1) KR20040043619A (en)
CN (1) CN1502481A (en)
AU (1) AU2003302032A1 (en)
WO (1) WO2004045782A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100735055B1 (en) * 2006-06-08 2007-07-06 서금윤 An electromotive chalk eraser enabling remote control
CN102390203A (en) * 2011-09-23 2012-03-28 山东理工大学 Automatic charging dust-collection blackboard eraser
CN105150728A (en) * 2015-10-06 2015-12-16 刘书廷 Novel blackboard eraser
CN108065876A (en) * 2016-11-13 2018-05-25 青岛世纪云帆实业有限公司 Electric dust absorption sweeps up dust whisk
CN107774601B (en) * 2017-12-01 2023-12-15 滁州学院 Dust-free cleaning device for blackboard eraser

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB935807A (en) * 1962-05-02 1963-09-04 Kwan Shu Min A combined eraser and suction cleaner for blackboards
GB2108434A (en) * 1981-10-23 1983-05-18 Hua Yu Wen Electric blackboard eraser

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5418331A (en) * 1977-07-09 1979-02-10 Saito Takeshi Blackboard wiper with dust collector
JP2617275B2 (en) * 1994-05-19 1997-06-04 営 筒井 Blackboard eraser
JP2810848B2 (en) * 1994-06-27 1998-10-15 政美 本間 Erasing device
KR200256716Y1 (en) * 2001-08-30 2001-12-24 홍기선 Rechargeable blackboard eraser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB935807A (en) * 1962-05-02 1963-09-04 Kwan Shu Min A combined eraser and suction cleaner for blackboards
GB2108434A (en) * 1981-10-23 1983-05-18 Hua Yu Wen Electric blackboard eraser

Also Published As

Publication number Publication date
AU2003302032A1 (en) 2004-06-15
AU2003302032A8 (en) 2004-06-15
CN1502481A (en) 2004-06-09
WO2004045782A2 (en) 2004-06-03
KR20040043619A (en) 2004-05-24

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