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:
Aug. 17, 1999
Filed:
Jun. 30, 1998
Michiaki Ohno, Saitama, JP;
Fumio Kanasaki, Saitama, JP;
Mitsuaki Noda, Saitama, JP;
Kazunori Aihara, Saitama, JP;
Noboru Nakagawa, Saitama, JP;
Kazushige Suzuki, Saitama, JP;
Mitsuo Sugita, Saitama, JP;
Toshihiro Teranishi, Saitama, JP;
Kazuo Hirata, Saitama, JP;
Kabushiki Kaisha Saginomiya Seisakusho, Tokyo, JP;
Abstract
In a rotary flow-path exchanging valve, a high pressure side communicating groove 37 is provided to communicate a first exchanging port 23 and a second exchanging port 27 of a valve seat plate 5 with a high pressure side communicating port selectively. A part of a joint pipe 17 to be connected to the high pressure side port 19 is protruded into the high pressure side communicating groove 27. The protruding part constitutes a stopper pipe 20 for limiting the rotatable range of a valve element 1. In installing the stopper pipe 20, it is connected and secured to the high pressure side port 19 of the valve seat plate 5, and thereafter is hardened by plastic deformation processing. Thus, when the stopper pipe is heated by soldering for its securing to the valve seat 5, the necessary strength thereof can be maintained.