BG49303A1 - Blackboard - Google Patents

Blackboard

Info

Publication number
BG49303A1
BG49303A1 BG9025889A BG9025889A BG49303A1 BG 49303 A1 BG49303 A1 BG 49303A1 BG 9025889 A BG9025889 A BG 9025889A BG 9025889 A BG9025889 A BG 9025889A BG 49303 A1 BG49303 A1 BG 49303A1
Authority
BG
Bulgaria
Prior art keywords
bath
wiping
endless tape
wiping sponge
operable walls
Prior art date
Application number
BG9025889A
Inventor
Margarita G Chokoeva
Zhivko N Chokoev
Biljana Zh Chokoeva
Original Assignee
Tekhn Ind Khim D Mendeleev
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 Tekhn Ind Khim D Mendeleev filed Critical Tekhn Ind Khim D Mendeleev
Priority to BG9025889A priority Critical patent/BG49303A1/en
Publication of BG49303A1 publication Critical patent/BG49303A1/en

Links

Landscapes

  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The black board is intended for use at schools and universities. It has a simplified construction and may be cleaned very effectively, which improves hygienic conditions. It includes a frame (1) with two rolls (4), around which is stretched a flexible endless tape (5), actuated by a motor-reductor group (7). The bottom roll (4) is enveloped by a bath (10) with a cleaning liquid. The bath (10) has a borne wiping cylinder, consisting of a shaft (11) with an attached to it wiping sponge (12) with a profile of irregular hexagon, formed by three short operable walls and three long non-operable walls. It also has a fixator (13) for situating the wiping sponge (12) in various positions toward the endless tape (5). The washing liquid contains water with solved in it citric acid and a conservant. The top front end of the bath (10) is affixed motively to a cleaning plate (14).
BG9025889A 1989-11-03 1989-11-03 Blackboard BG49303A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BG9025889A BG49303A1 (en) 1989-11-03 1989-11-03 Blackboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG9025889A BG49303A1 (en) 1989-11-03 1989-11-03 Blackboard

Publications (1)

Publication Number Publication Date
BG49303A1 true BG49303A1 (en) 1991-10-15

Family

ID=3922448

Family Applications (1)

Application Number Title Priority Date Filing Date
BG9025889A BG49303A1 (en) 1989-11-03 1989-11-03 Blackboard

Country Status (1)

Country Link
BG (1) BG49303A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102616065A (en) * 2012-04-02 2012-08-01 张春平 Remote control type dustless blackboard eraser
CN103253046A (en) * 2013-05-24 2013-08-21 东北大学 Wet-type and dust-free blackboard cleaner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102616065A (en) * 2012-04-02 2012-08-01 张春平 Remote control type dustless blackboard eraser
CN103253046A (en) * 2013-05-24 2013-08-21 东北大学 Wet-type and dust-free blackboard cleaner
CN103253046B (en) * 2013-05-24 2015-01-28 东北大学 Wet-type and dust-free blackboard cleaner

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