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:
Mar. 17, 1992
Filed:
Dec. 28, 1990
Applicant:
Inventors:
Sunao Fukuda, Handa, JP;
Kazuhiko Asano, Nagoya, JP;
Akihito Tanaka, Toyohashi, JP;
Sumio Susa, Anjo, JP;
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01P / ;
U.S. Cl.
CPC ...
123 4144 ; 123 411 ;
Abstract
A cooling device for an internal combustion engine has an additonal water pump and a bypass conduit which bypasses the additional water pump. When the amount of heat radiation of the radiator is insufficient, the additional water pump is driven by an electric motor. When the additional water pump is not necessary, the bypass conduit is opened, so that the cooling fluid bypasses the additional pump.