Main circuit breaker

- Square D Company
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Description

FIG. 1 is a perspective view of a main circuit breaker showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right end elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a left end elevational view thereof.

Referenced Cited
U.S. Patent Documents
D221953 September 1971 Zecca
D246851 January 3, 1978 Tarchalski et al.
2922004 January 1960 Miller et al.
3098902 July 1963 Meyer
Other references
  • Breaker on p. 3 of FPE Catalog, 9-63. Federal Pacific 2 Pole Main Breaker on p. 94 of Bennett Brass and Copper Catalog, 1987.
Patent History
Patent number: D317004
Type: Grant
Filed: Jul 19, 1989
Date of Patent: May 21, 1991
Assignee: Square D Company (Palatine, IL)
Inventors: Jeffrey O. Sharp (Lexington, KY), Edward P. Dessert (Lincoln, NE), Michael R. Harris (Winchester, KY)
Primary Examiner: Susan J. Lucas
Assistant Examiner: Joel Sincavage
Attorneys: Jose W. Jimenez, Thomas K. Stine
Application Number: 7/384,934