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:
Jul. 12, 1983
Filed:
Sep. 30, 1982
Applicant:
Inventors:
Horst Heckmann, Sprockhovel, DE;
Werner Nawroth, Waltrop, DE;
Assignee:
Friedrich W. Schwing, GmbH, Herne, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
1374542 ; 13762518 ; 13762548 ; 251329 ;
Abstract
A control valve for viscous material pumps has a valve plate reciprocally movable in a flat housing divided in half to control the flow channels of the valve. The plate is movable in a wear shell inlaid in the housing and having covering rings along the flow channels.