Pneumatic actuator for an electrical switch

- Tridelta Industries
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Description

FIG. 1 is a top plan view of a pneumatic actuator for an electrical switch showing our new design;

FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image;

FIG. 3 is a right side elevational view thereof, the left side elevational view thereof being a mirror image; and,

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D31892 November 1899 Downey
D69040 December 1925 Loomis
D86627 March 1932 Newton
D219028 October 1970 Miller et al.
D301332 May 30, 1989 Schwartz
2755132 July 1956 Croce
2779628 January 1957 Croce
2864367 December 1958 Mende
4496811 January 29, 1985 Irwin
Other references
  • Oval shaped key chain ornaments on p. 395 of Hong Kong Enterprise, Oct. 1989.
Patent History
Patent number: D329424
Type: Grant
Filed: Nov 29, 1990
Date of Patent: Sep 15, 1992
Assignee: Tridelta Industries (Mentor, OH)
Inventors: Raymond J. Niemczura (Mentor, OH), Victor M. Selig (Cleveland Heights, OH), Karen A. Davis (Mentor, OH)
Primary Examiner: Wallace R. Burke
Assistant Examiner: J. Sincavage
Attorneys: D. Peter Hochberg, Mark Kusner, Louis J. Weisz
Application Number: 7/619,717
Classifications
Current U.S. Class: Actuator (e.g., Button, Slide, Etc.) (D13/174)