JPS6464899A - Self-propelling automatic type eraser device - Google Patents

Self-propelling automatic type eraser device

Info

Publication number
JPS6464899A
JPS6464899A JP22274187A JP22274187A JPS6464899A JP S6464899 A JPS6464899 A JP S6464899A JP 22274187 A JP22274187 A JP 22274187A JP 22274187 A JP22274187 A JP 22274187A JP S6464899 A JPS6464899 A JP S6464899A
Authority
JP
Japan
Prior art keywords
chalk
blackboard
dust
wiping
self
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.)
Pending
Application number
JP22274187A
Other languages
Japanese (ja)
Inventor
Kunito Nishisako
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP22274187A priority Critical patent/JPS6464899A/en
Publication of JPS6464899A publication Critical patent/JPS6464899A/en
Pending legal-status Critical Current

Links

Landscapes

  • Drawing Aids And Blackboards (AREA)
  • Cleaning In General (AREA)

Abstract

PURPOSE: To prevent spread of dust into air and make it possible to automatically wipe chalk attached to blackboard as required by installing suction mouth or chalk dust in the direction that chalk dust is scattered when chalk erasing means makes contact with blackboard and at a position nearby. CONSTITUTION: Chalk wiping means 1 employs artificial fibers or sponge that has been processed so as to be fit for wiping chalk stuck on surface of blackboard 3. This is mounted on the outer face of two cylindrical rotors 2 and 12 through mounting/demounting device 13 for the chalk wiping means so as to make these rotors come close to each other and contact with the blackboard surface. And power transmission means 14 is connected to each rotating shaft, so as to synchronously rotate them in reverse directions, which is further linked with power generation means 15. Dust suction mouth 4 is provided at inside of the portion that the chalk wiping means 1 makes contact with the blackboard surface 3, being connected to negative pressure chamber 5 and further to negative pressure generating and dust collecting means 6. This device is connected to self-propelling means 9 and guiding means 8.
JP22274187A 1987-09-04 1987-09-04 Self-propelling automatic type eraser device Pending JPS6464899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22274187A JPS6464899A (en) 1987-09-04 1987-09-04 Self-propelling automatic type eraser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22274187A JPS6464899A (en) 1987-09-04 1987-09-04 Self-propelling automatic type eraser device

Publications (1)

Publication Number Publication Date
JPS6464899A true JPS6464899A (en) 1989-03-10

Family

ID=16787176

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22274187A Pending JPS6464899A (en) 1987-09-04 1987-09-04 Self-propelling automatic type eraser device

Country Status (1)

Country Link
JP (1) JPS6464899A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07309099A (en) * 1994-05-19 1995-11-28 Ei Tsutsui Eraser for blackboard
CN105818585A (en) * 2016-04-13 2016-08-03 周玮奕 Automatic dust-free backboard eraser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07309099A (en) * 1994-05-19 1995-11-28 Ei Tsutsui Eraser for blackboard
CN105818585A (en) * 2016-04-13 2016-08-03 周玮奕 Automatic dust-free backboard eraser
CN105818585B (en) * 2016-04-13 2017-02-15 周玮奕 Automatic dust-free backboard eraser

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