Frequency inverter

- Hitachi, Ltd.
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 top plan elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a rear, bottom and left side perspective view thereof.

Referenced Cited
U.S. Patent Documents
D220696 May 1971 Lazzo, III
D284076 June 3, 1986 Moeller
D292914 November 24, 1987 Moeller
D305115 December 19, 1989 Kondo et al.
D318845 August 6, 1991 Plumeret et al.
Patent History
Patent number: D343382
Type: Grant
Filed: Mar 2, 1992
Date of Patent: Jan 18, 1994
Assignee: Hitachi, Ltd. (Tokyo)
Inventors: Shigehisa Hagura (Kokubunji), Toshihiko Wada (Musashimurayama), Tadao Shimotsu (Sakura), Norinaga Suzuki (Funabashi)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Joel Sincavage
Law Firm: Antonelli, Terry, Stout & Kraus
Application Number: 7/843,090
Classifications