Attitude director indicator

Description

FIG. 1 is a front elevational view of an attitude director indicator showing our new design;

FIG. 2 is a typical side elevational view thereof, the broken-line showing of the instrument housing being environmental and forming no part of the claimed design.

The drawing is lined to indicate contrasting colors. The rear of the indicator not shown, is substantially plain and unornamented.

Referenced Cited
U.S. Patent Documents
D179443 December 1956 Dayton
D194191 December 1962 Schweighofer
D205791 September 1966 Harding
D237594 November 1975 Vetter
D256678 September 2, 1980 Schmidt
2027808 January 1936 Carlson
2821695 January 1958 Strock
3525159 August 1970 Mills
3967236 June 29, 1976 Dietrich
4044975 August 30, 1977 Blechen
4138661 February 6, 1979 McAdams
Foreign Patent Documents
1094398 December 1954 FRX
1335741 July 1963 FRX
580671 August 1958 ITX
Patent History
Patent number: D274047
Type: Grant
Filed: Jan 27, 1982
Date of Patent: May 29, 1984
Assignee: Rockwell International Corporation (El Segundo, CA)
Inventors: Donald F. Schmidt (Cedar Rapids, IA), Siegfried Knemeyer, deceased (late of Yellow Springs, OH)
Primary Examiner: Nelson C. Holtje
Attorneys: Terry M. Blackwood, George A. Montanye, H. Fredrick Hamann
Application Number: 6/343,070
Classifications