Pneumatic structure

Details Pneumatic structure Pneumatic structure

1987-12-01

1988-08-23

Yu, Mickey

Card, picture, or sign exhibiting

Display with special effects

Fluid operated

40412, 446178, 446199, G09F 1900, G09F 1908

Patent

active

047650796

ABSTRACT:
A pneumatic structure a part or the whole of which can desirably be put in motion when the pneumatic structure is shaped into, for example, outlines of living things or the like. A spare portion having at least a pair of bending fulcra is formed on the structure main body on the opposite side to a bending direction of the structure, and a length of arc between the respective fulcra of the spare portion is made shorter than 1/2 outer circumferential length of the pneumatic structure containing a set of the respective fulcra, whereby the structure can positively be maintained in a desired state under normal conditions and bending operation thereof can be promptly effected at a large angle by means of small external force.

REFERENCES:
patent: 2041737 (1936-05-01), Beal
patent: 2047377 (1936-07-01), Liwschutz
patent: 2348250 (1944-05-01), Gardner et al.
patent: 3071892 (1963-01-01), Clark
patent: 3159935 (1964-12-01), Rubens
patent: 3377627 (1968-08-01), Madnick
patent: 3918180 (1975-11-01), Chamberlin
patent: 4271620 (1981-06-01), Vicino et al.

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