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:
Sep. 22, 1987
Filed:
May. 02, 1985
Applicant:
Inventor:
Richard S Goodwin, Stoke-On-Trent, GB;
Assignee:
R. Goodwin International Ltd., Hanley-Stoke-On-Trent, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
1375121 ; 1375272 ;
Abstract
A wafer check valve having an annular housing, closing flaps effective to close a passage through the housing and spring urged to a passage closing position, the flaps being mounted on one or more hinge pins, the or each hinge pin extending at each end into a bore in an insert, the inserts being received in respective slots in the body and including means retaining the inserts in the slots without movement.
Goodwin, Richard. (1987). Wafer check valves (U.S. Patent No. 4694853). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4694853
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile