Motor controlled focussing attachment for telescopes

Description

FIG. 1 is a perspective view of a motor controlled focussing attachment for telescopes showing my new design with a telescope shown in broken lines for illustrative purposes only;

FIG. 2 is an enlarged side elevation view thereof;

FIG. 3 is an enlarged top plan view thereof;

FIG. 4 is an enlarged front elevation view thereof;

FIG. 5 is an enlarged rear elevation view thereof.

Referenced Cited
U.S. Patent Documents
D175503 September 1955 Gottschalk et al.
D175706 October 1955 Bednarz
D178767 September 1956 Degrave, Jr.
1792171 February 1931 Kruening
Foreign Patent Documents
463245 February 1914 FRX
Patent History
Patent number: D286644
Type: Grant
Filed: Apr 5, 1984
Date of Patent: Nov 11, 1986
Inventor: James D. Burr (Evergreen, CO)
Primary Examiner: Susan J. Lucas
Assistant Examiner: C. E. Heflin
Attorney: Robert E. Harris
Application Number: 6/597,081
Classifications