Insulator for electric heating elements

- Emerson Electric Co.
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front elevational view of an insulator for electric heating elements, showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image of the side shown;

FIG. 4 is a cross sectional view taken on line 4--4 of FIG. 2;

FIG. 5 is a cross sectional view taken on line 5--5 of FIG. 2;

FIG. 6 is a front elevational view of a modified form of the insulator for electric heating elements shown in FIG. 1;

FIG. 7 is a rear elevational view of FIG. 6;

FIG. 8 is a side elevational view of FIG. 6, the opposite side being a mirror image of the side shown;

FIG. 9 is a cross sectional view taken on line 9--9 of FIG. 7; and

FIG. 10 is a cross sectional view taken on line 10--10 of FIG. 7.

Referenced Cited
U.S. Patent Documents
D59369 October 1921 Moffat
D59370 October 1921 Moffat
D226435 March 1973 Hackman
D248641 July 25, 1978 Thweatt, Jr.
D248642 July 25, 1978 Thweatt, Jr.
D248643 July 25, 1978 Thweatt, Jr.
D248943 August 15, 1978 King
1935163 November 1933 Parsons
2081089 May 1937 Frese
3860788 January 1975 Staples
3882438 May 1975 Bourner
Patent History
Patent number: D253171
Type: Grant
Filed: May 16, 1977
Date of Patent: Oct 16, 1979
Assignee: Emerson Electric Co. (St. Louis, MO)
Inventors: Bruce C. Harris (Wytheville, VA), Robert V. Ogrodnik (Wytheville, VA)
Primary Examiner: James R. Largen
Attorney: Michael Williams
Application Number: 5/797,592
Classifications
Current U.S. Class: D13/17
International Classification: D1303;