Frequency inverter

- Hitachi, Ltd.
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Description

FIG. 1 is a front, top and right side perspective view of a frequency inverter showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a left side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D290694 July 7, 1987 Shimizu et al.
D294565 March 8, 1988 Makinson et al.
D304170 October 24, 1989 Kondo et al.
D318845 August 6, 1991 Plumeret
4620263 October 28, 1986 Ito
4769557 September 6, 1988 Houf et al.
4980801 December 25, 1990 Guinda et al.
Foreign Patent Documents
2543781 October 1984 FRX
3924161 January 1991 DEX
405250977 September 1993 JPX
Patent History
Patent number: D358753
Type: Grant
Filed: Jul 21, 1994
Date of Patent: May 30, 1995
Assignee: Hitachi, Ltd.
Inventors: Yoshiki Yoshida (Iruma), Akitaka Takeuchi (Kodaira), Norinaga Suzuki (Funabashi), Hidenori Sugio (Funabashi)
Primary Examiner: Joel Sincavage
Law Firm: Antonelli, Terry, Stout & Kraus
Application Number: 0/26,178
Classifications
Current U.S. Class: Distribution, Modification Or Control (D13/123)