Drawing board type amusement device

Details Drawing board type amusement device Drawing board type amusement device

1986-05-27

1988-08-02

Murtagh, John E.

Education and demonstration

Means for demonstrating apparatus, product, or surface...

Chalkboard or equivalent means having easily erasable surface

434426, B43L 112

Patent

active

047611391

ABSTRACT:
A drawing board type amusement device, comprises a rigid board, a backing sheet overlying the board, and a masking member overlying the backing sheet and including a masking layer of opaque material which flows under the localized pressure of a stylus or finger to expose the underlying backing sheet along the areas in which the localized pressure is applied. The backing sheet is of longer length than the rigid board and is wound between a pair of rotatable spools at the ends of the board to permit different sections of the sheet to be aligned with the masking member.

REFERENCES:
patent: 611545 (1898-09-01), Yarnall
patent: 1891414 (1932-12-01), Hahn
patent: 3279100 (1966-10-01), Knott
patent: 3284924 (1966-11-01), Parmenter
patent: 3497970 (1970-03-01), Padowicz
patent: 4208809 (1980-06-01), Schwartz
patent: 4427387 (1984-01-01), Tomita

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