The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1987
Filed:
Feb. 03, 1986
Donald M Cunningham, Pittsburgh, PA (US);
Mark A Bartels, Columbus, MS (US);
T Randall Markum, Vernon, AL (US);
Emerson Electric Co., St. Louis, MO (US);
Abstract
A water heater with a plastic tank is provided with an electric immersion heating element assembly having a mounting plug in which is mounted a sheathed heating element having two generally parallel legs and a bight portion. A well projects from the mounting plug along and substantially parallel to the legs in heat exchange relation therewith and contains a thermal cutoff adapted to be electrically connected in series with the first end of a two-ended electric resistance element in the sheathed heating element. A thermally conductive bridge mechanically and thermally connects the legs of the sheathed heating element to the well. The legs of the sheathed heating element are bent back upon themselves and a bracket, connected to the two reaches of at least one leg, permits relative axial movement but prevents lateral movement of the reaches of the legs with respect to one another. The mounting plug is made of solid copper or copper alloy, as is the sheath and well. A molded non-metallic, electrically insulative closure has holes through which a terminal pin from the thermal cutoff and a terminial pin from the second end of the resistance element extend. The molded closure has a boss with a blind hole into which a terminal pin connected to the first end of the heating element extends and to which terminal pin the other terminal pin of the thermal cutoff is connected.