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, 2011
Filed:
Sep. 20, 2007
Ryo Ishibashi, Kariya, JP;
Motoyoshi Andoh, Nagoya, JP;
Ryo Ishibashi, Kariya, JP;
Motoyoshi Andoh, Nagoya, JP;
Denso Corporation, Kariya, JP;
Abstract
A spool valve includes a valve housing, a spool and radial damper device. The valve housing has a shaft bore. The spool is slidably supported within the shaft bore in a longitudinal direction, and the spool has a first diameter portion and a second diameter portion. The radial damper device has a radial damper chamber and a radial chamber restrictor. The radial damper chamber is defined by a diameter difference between the first diameter portion and the second diameter portion. The radial chamber restrictor provides communication between the radial damper chamber and an adjacent chamber disposed adjacent to the radial damper chamber in the longitudinal direction.