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. 09, 1999
Filed:
Aug. 27, 1996
Shigeru Nakajima, Aichi-pref, JP;
Aisin Seiki Kabushiki Kaisha, Aichi-pref, JP;
Abstract
A switching valve has a cylindrical housing including a bore, an inlet port, a first inlet-outlet port, and a second inlet-outlet port which open to the hollow. A valve member slidably disposed in the bore has a ringed groove around its periphery. The valve member can open or block a portion between the groove and the first inlet-outlet port and a portion between the groove and the second inlet-outlet port. The groove formed outside the valve member always communicates with the inlet port and can communicate with the first and second inlet-outlet ports. A single drain port is formed within the valve member so that the single drain port can communicate with the first and second inlet-outlet ports. The valve member is caused to slide by a solenoid.