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:
Oct. 24, 1989
Filed:
May. 16, 1988
David W Kramer, Milwaukee, WI (US);
A. O. Smith Corporation, Milwaukee, WI (US);
Abstract
A submersible chamber water heater having improved efficiency. The water heater includes a tubular member that is mounted in an opening in the tank and defines a combustion chamber. A fuel-air mixture is supplied to a burner located within the combustion chamber and the waste gases of combustion are conducted from the combustion chamber into a series of heat exchanger tubes which are positioned beneath the combustion chamber and are then discharged to a flue. A conduit extends through the combustion chamber and the ends of the conduit communicate with the interior of the tank. One end of the conduit is at a higher level than the other, so that water flows by convection through the conduit to increase the efficiency of the heating operation.