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:
May. 14, 1991
Filed:
Aug. 10, 1989
Applicant:
Inventors:
Harald Korfgen, Frondenberg, DE;
Heinz Hirsch, Soest, DE;
Vinzenz Grendel, Hemer, DE;
Friedrich Wagner, Endingen, DE;
Walter Grau, Mahlberg, DE;
Assignee:
Friedrich Grohe Armaturenfabrik GmbH & Co., Hemer, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ; F16K / ;
U.S. Cl.
CPC ...
137315 ; 1374545 ; 13762531 ; 251180 ; 251208 ; 251304 ;
Abstract
A shut-off valve mechanism for a shut-off and control valve has a generally cylindrical housing with inner and outer annular shoulder against which a valve seat disk is placed to prevent distortion of the valve seat disk. The valve control disk is pressed by spring forces against the valve seat disk from its upstream side and is entrained in rotation by a spindle passing through the inner annular shoulder and the valve seat disk.