Residual current operated circuit-breaker

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Description

FIG. 1 is a front and upper right perspective view of residual current operated-circuit breaker showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a left side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D315333 March 12, 1991 Barbier et al.
D321169 October 29, 1991 Bouteiller
D326844 June 9, 1992 Bouteiller
4595812 June 17, 1986 Tamaru et al.
Other references
  • Mitsubishi circuit breaker on p. 761 of Elektrotechinsche Zeitschrift, Jul. 1985. Circuit breakers on p. 240 of Westinghouse Consulting Application Guide, Mar. 1989. Group of four circuit breakers on p. 620 of Elektrotechinsche Zeitschrift, Jun. 1989. Super NV, published by Mitsubishi Denki Kabushiki Kaisha, Mar. 1987.
Patent History
Patent number: D334174
Type: Grant
Filed: Oct 9, 1991
Date of Patent: Mar 23, 1993
Assignee: Mitsubishi Denki Kabushiki Kaisha (Chiyoda)
Inventors: Setsuo Hosogai (Fukuyama), Hiroshi Fujii (Fukuyama), Yoshiaki Matsumoto (Fukuyama), Kazuyoshi Sugihara (Fukuyama), Shingo Maeda (Fukuyama), Shinji Yokota (Fukuyama), Masakatsu Suzuki (Kamakura)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Joel Sincavage
Law Firm: Burns, Doane, Swecker & Mathis
Application Number: 7/774,284