Insulator for an open coil electric heating unit

- Emerson Electric Co.
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Description

FIG. 1 is a front elevational view of an insulator for an open coil electric heating unit, showing my new design;

FIG. 2 is a side elevational view thereof,

FIG. 3 is a front perspective view thereof, and

FIG. 4 is a rear perspective view thereof.

Referenced Cited
U.S. Patent Documents
D59369 October 1921 Moffat
D226435 March 1973 Hackman
1698282 January 1929 Simmons
2096582 October 1937 Gough
2490139 December 1949 Kuenne
2602130 July 1952 Shaw
3610882 October 1971 Omohundro
3935376 January 27, 1976 Cooper et al.
Patent History
Patent number: D248641
Type: Grant
Filed: Oct 12, 1976
Date of Patent: Jul 25, 1978
Assignee: Emerson Electric Co. (St. Louis, MO)
Inventor: Carlisle Thweatt, Jr. (Pulaski, VA)
Primary Examiner: James R. Largen
Attorney: Michael Williams
Application Number: 5/731,327
Classifications
Current U.S. Class: D13/17
International Classification: D1399;