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. 30, 1987
Filed:
Mar. 27, 1986
Toshihiro Fujikawa, Higashikurume, JP;
Kyowa Engineering Co., Ltd., Tokyo, JP;
Abstract
An improved valve structure is disclosed, which comprises a sleeve containing a valve chamber and a valve seat therein, a valve body slidably accommodated in the sleeve and having a spherical surface, an axial port formed in the sleeve so as to communicate with the valve seat, a front chamber formed between the valve body and the valve seat, a side port formed in the side wall of the valve chamber and communicated with the front chamber, a spring receiver provided at an end of the sleeve in the opposite direction to the valve seat, a rear chamber formed between the valve body and the spring receiver, a spring disposed between the spring receiver and the valve body to bias the valve body towards the valve seat, a communication passageway formed to communicate the front chamber with the rear chamber and having a smaller cross-section area than the side port, a control passageway provided in communication with the rear chamber to communicate the rear chamber with the exterior of the valve chamber, and a control valve provided in the control passageway.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile