Attitude director indicator

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

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

FIG. 2 is a front perspective view thereof.

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
D180812 August 1957 Schweighofer
D190763 June 1961 Varner
D190968 July 1961 Andres
D194191 December 1962 Schweighofer
D205791 September 1966 Harding
3852710 December 1974 Hernandez
3967236 June 29, 1976 Dietrich
4044709 August 30, 1977 Green
Patent History
Patent number: D256678
Type: Grant
Filed: May 22, 1978
Date of Patent: Sep 2, 1980
Assignee: Rockwell International Corporation (Dallas, TX)
Inventors: Donald F. Schmidt (Cedar Rapids, IA), Siegfried Knemeyer (Yellow Springs, OH)
Primary Examiner: Nelson C. Holtje
Attorney: Richard A. Bachand
Application Number: 5/908,025
Classifications
Current U.S. Class: Aircraft Instrument (D10/67)
International Classification: D1004;