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:
Jun. 11, 2002
Filed:
Mar. 13, 2001
Applicant:
Inventor:
Kunibert Neu, Albstrasse, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 1/44 ;
U.S. Cl.
CPC ...
F16K 1/44 ;
Abstract
The invention describes a shut-off valve having a double seat with an upper valve seat ( ) of a diameter D and a lower valve seat ( ) of a diameter D different to the diameter D (D <D ), and a double-head setting member ( ) which in the closed condition prevents passage therethrough of a medium which is to be sealed off. The annular surface (D −D ) of the double-head setting member ( ), which is acted upon by the medium to be sealed off and affords a closing force, and is formed from the outside diameter D and the inside diameter D , is divided by a diameter D (D <D <D ) into at least two regions ( ) in order to distribute the closing force to the upper valve seat ( ) and the lower valve seat ( ).