CA2121663A1 - Blackboard - Google Patents

Blackboard

Info

Publication number
CA2121663A1
CA2121663A1 CA2121663A CA2121663A CA2121663A1 CA 2121663 A1 CA2121663 A1 CA 2121663A1 CA 2121663 A CA2121663 A CA 2121663A CA 2121663 A CA2121663 A CA 2121663A CA 2121663 A1 CA2121663 A1 CA 2121663A1
Authority
CA
Canada
Prior art keywords
longitudinally extending
lowermost
shaped
cross
section
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.)
Granted
Application number
CA2121663A
Other languages
French (fr)
Other versions
CA2121663C (en
Inventor
Gwo-Nan Tsuar
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.)
TSUAR GWO NAN
Original Assignee
TSUAR GWO NAN
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 TSUAR GWO NAN filed Critical TSUAR GWO NAN
Priority to CA002121663A priority Critical patent/CA2121663C/en
Publication of CA2121663A1 publication Critical patent/CA2121663A1/en
Application granted granted Critical
Publication of CA2121663C publication Critical patent/CA2121663C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04—Blackboards
    • 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

Landscapes

  • Drawing Aids And Blackboards (AREA)

Abstract

A blackboard includes a rectangular board member, a protective frame member provided on each side of the board member, and a tray connected to a lowermost one of the frame members and movable between an unfolded position for receiving erasers and writing implements and a folded position. The lowermost one of the frame members has a front side which is formed with a longitudinally extending retaining portion that confines a longitudinally extending space which is substantially L-shaped in cross-section. The tray has a rear side wall which is formed with a transversely and longitudinally extending rearward anchor projection that is substantially T-shaped in cross-section and that has a head portion which extends into the space.
CA002121663A 1994-04-19 1994-04-19 Blackboard Expired - Fee Related CA2121663C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002121663A CA2121663C (en) 1994-04-19 1994-04-19 Blackboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002121663A CA2121663C (en) 1994-04-19 1994-04-19 Blackboard

Publications (2)

Publication Number Publication Date
CA2121663A1 true CA2121663A1 (en) 1995-10-20
CA2121663C CA2121663C (en) 1997-11-04

Family

ID=4153409

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002121663A Expired - Fee Related CA2121663C (en) 1994-04-19 1994-04-19 Blackboard

Country Status (1)

Country Link
CA (1) CA2121663C (en)

Also Published As

Publication number Publication date
CA2121663C (en) 1997-11-04

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed