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:
Jun. 24, 2025
Filed:
Sep. 18, 2023
Denso Corporation, Kariya, JP;
Atsushi Tanaka, Kariya, JP;
Ryo Sano, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A valve device includes: a housing; a passage forming portion that has at least one passage hole configured to conduct a fluid; a drive device that is configured to output a rotational force; and a shaft that is configured to be rotated about a central axis. The valve device includes: a rotor that is configured to increase or decrease an opening degree of the at least one passage hole in response to rotation of the shaft; and a torsion spring that surrounds the central axis and is configured to urge the shaft relative to the housing in a circumferential direction of the central axis of the shaft. The housing has a stopper that is configured to contact the shaft and thereby limit a rotational drive range of the shaft when the shaft is rotated to a predetermined position. The stopper is placed at an inside of the torsion spring.