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. 21, 2017
Filed:
Apr. 04, 2013
Denso Corporation, Kariya, Aichi-pref., JP;
Shunjiro Kikawa, Kariya, Aichi-pref., JP;
Takurou Furukoshi, Kariya, JP;
Michio Nishikawa, Nagoya, JP;
Nobuharu Kakehashi, Toyoake, JP;
Shunjiro Kikawa, Kariya, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
A radiator cap is connected to a circulating circuit at a connecting point located upstream of a water pump in a flow direction of coolant and that regulates a pressure in the circulating circuit to be within a predetermined pressure range that is higher than or equal to an atmospheric pressure at the connecting point. A rotary valve is disposed in the circulating circuit at upstream of the connecting point of the radiator cap in the flow direction of coolant. Accordingly, a cavitation is restricted from occurring, and the water pump can perform enough efficiency. A communication passage that has an upstream end and a downstream end connected to the circulating circuit may be disposed instead of the radiator cap. In this case, a pressure regulating valve is disposed in the communication passage.