Dual element heater

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Description

FIG. 1 is a perspective view of the top, one and one end thereof;

FIG. 2 is a view of the top and one side thereof;

FIG. 3 is a top view thereof the opposite side being identical; and,

FIG. 4 is a side view thereof.

Referenced Cited
U.S. Patent Documents
3752017 August 1973 Lloyd et al.
3804320 April 1974 Vandermark
3980861 September 14, 1976 Fukunaga
4034202 July 5, 1977 Vandermark
4256945 March 17, 1981 Carter et al.
4389912 June 28, 1983 Dallons et al.
4553021 November 12, 1985 Conti
4695713 September 22, 1987 Krumme
5145101 September 8, 1992 Brown et al.
5241156 August 31, 1993 Wallgren et al.
Patent History
Patent number: D381880
Type: Grant
Filed: Sep 2, 1994
Date of Patent: Aug 5, 1997
Assignee: Metcal, Inc. (Menlo Park, CA)
Inventors: Ronald W. LaValley (Belmont, CA), Michael Carlomagno (Redwood City, CA), Jeffrey Philips (Sunnyvale, CA), Tark Abed (Palo Alto, CA)
Primary Examiner: Antoine Duval Davis
Attorney: Howard L. Rose
Application Number: 0/27,790
Classifications
Current U.S. Class: D 8/292
International Classification: 0805;