Gas pressure motor for model airplane

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Description

FIG. 1 is a side view of the gas pressure motor for model airplane showing my new design;

FIG. 2 is a front view of the gas pressure motor for model airplane;

FIG. 3 is a top plan view of the gas pressure motor for model airplane; and

FIG. 4 is a rear view of the gas pressure motor for model airplane.

Referenced Cited
U.S. Patent Documents
D119337 March 1940 Shaw
2715445 August 1955 Williamson
2943417 July 1960 Greenspan et al.
3120632 February 1964 Hopt et al.
3317765 May 1967 Cone
Patent History
Patent number: D256142
Type: Grant
Filed: Jul 27, 1977
Date of Patent: Jul 29, 1980
Assignee: Harden Associates Limited (Bury)
Inventor: Roy Lever (Tildesley)
Primary Examiner: Susan J. Lucas
Attorney: Kenwood Ross
Application Number: 5/819,266
Classifications
Current U.S. Class: D21/91
International Classification: D2101;