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 rear elevational view thereof,

FIG. 3 is a side elevational view thereof,

FIG. 4 is a cross sectional view taken on line 4--4 of FIG. 1,

FIG. 5 is a front perspective view thereof, and

FIG. 6 is a rear perspective view thereof.

Referenced Cited
U.S. Patent Documents
D59369 October 1921 Moffat
D226435 March 1973 Hackman
3358074 December 1967 Himes
3668303 June 1972 Alexander
3860788 January 1975 Staples
3883721 May 1975 Paulson et al.
3916153 October 1975 Jay et al.
Patent History
Patent number: D248643
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: 5/731,330
Classifications
Current U.S. Class: D13/17
International Classification: D1399;