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:
Dec. 28, 1982
Filed:
Sep. 24, 1980
Applicant:
Inventor:
Wolfgang Grothe, D-7410 Reutlingen, DE;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137539 ; 137544 ;
Abstract
A check valve having a plastic cylindrical body having an axial inlet and outlet, longitudinal guide ribs on the inside of the body, a spring member urging a valve ball against the inlet opening, a guide pin inside of the spring member, and a screen member covering the inlet opening.