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:
May. 07, 2019
Filed:
Apr. 20, 2016
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Zhenyu Shen, Zama, JP;
Takeshi Yoshimura, Atsugi, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka-Shi, JP;
Abstract
Flow rate control valve CV has first housinghaving introduction openingopening in axial direction of hollow valve body accommodating portionand introducing cooling water and first to third exhaust ports E-E, each of which is formed so as to have opening cross section that is smaller than that of introduction opening, radially communicates with valve body accommodating portionand exhausts cooling water in valve body accommodating portion; and valve bodyrotatably supported in valve body accommodating portionand having opening portions M-Mwhose overlap state with exhaust ports E-Eis changed according to rotation position of valve body. Opening cross section between introduction openingand third opening portion M(exhaust port E) is reduced in axial direction of valve body accommodating portion, thereby suppressing rapid reduction of flow passage sectional area and decreasing flow resistance of cooling water.