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:
Apr. 11, 1989
Filed:
Jul. 09, 1986
Osamu Tsutsui, Fukuoka, JP;
Hideki Kawaguchi, Fukuoka, JP;
Keiji Hayashi, Fukuoka, JP;
Masahiro Kayano, Fukuoka, JP;
Shingo Tanaka, Fukuoka, JP;
Hiroshi Kobayashi, Shiga, JP;
Hisashi Nakamura, Shiga, JP;
Atsuo Makita, Shiga, JP;
Toto Ltd., Fukuoka, JP;
Abstract
A multiple purpose instantaneous gas water heater comprises a combination of a larger combustion capacity type first burner with a smaller combustion capacity type second burner. Each of the burners can be controlled by a proportional combustion control method and/or an intermittent combustion control method. It is possible to combine these functions within a microcomputer system so as to use each or both burners selectively, or both together, so that it is possible to select water from a wide range of hot water temperatures or to select a target temperature.