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:
Mar. 10, 1981
Filed:
Aug. 09, 1979
Applicant:
Inventor:
Hermann Schadel, Ergste, DE;
Assignee:
Holstein & Kappert GmbH, Dortmund-Wambel, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137240 ; 13761416 ; 251334 ;
Abstract
A double-seat valve has a first valve member and a second valve member which abut against one another after a predetermined stroke to an open position, so as to form a closed chamber. A draining conduit communicates with the thus-formed chamber. The valve members are mounted on a common shaft. One of the valve members is variable so that its seating face is displaceable relative to a point in which this valve member is mounted on the common shaft. The one valve member may be elastically deformable or corrugated.