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. 19, 2022
Filed:
Aug. 05, 2020
Denso Corporation, Kariya, JP;
Ryo Sano, Kariya, JP;
Yosuke Tanaka, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A housing unit includes a cylindrical passage member, through which cooling water flows. A valve unit includes a valve main body rotatable around its axis and a valve opened portion formed in an outer peripheral surface of the valve main body, through which the cooling water can pass. A valve seat unit includes a positioned member and a valve seat surface. An outer peripheral surface of the positioned member is positioned in a radial direction by an inner peripheral surface of the cylindrical passage member and the positioned member is movable in an axial direction in a reciprocal manner. The valve seat surface holds a fluid tight condition between the valve seat surface and the valve main body when it is in contact with the outer peripheral surface of the valve main body. A biasing member biases the valve seat unit in such a way that the valve seat surface is pushed to the outer peripheral surface of the valve main body. The cylindrical passage member includes a groove formed in an inner peripheral surface thereof at least in a part of an overlapping area, at which the cylindrical passage member and the positioned member overlap each other in the axial direction. The groove is recessed in a radial-outward direction from the inner peripheral surface.