Screw plug mounting for an electric immersion heater

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view of a screw plug mounting for an electric immersion heater showing my new design;

FIG. 2 is a top plan view of said mounting.

FIG. 3 is a sectional view corresponding to the line 3--3 of FIG. 2, and

FIG. 4 is a view similar to FIG. 3, but showing a slightly modified design; but having the same general appearance of FIG. 1.

Referenced Cited
U.S. Patent Documents
1279651 September 1918 Campbell
1569881 January 1926 Reid
3138173 June 1974 Hartman
Patent History
Patent number: D243582
Type: Grant
Filed: Jul 10, 1975
Date of Patent: Mar 8, 1977
Inventor: Robert D. Shirey (Pittsburgh, PA)
Primary Examiner: William N. Wertman
Attorney: Michael Williams
Application Number: 5/594,851
Classifications
Current U.S. Class: D23/127
International Classification: D0808;