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. 12, 1987
Filed:
Mar. 20, 1984
Applicant:
Inventor:
Anton Steiger, Illnau, CH;
Assignee:
Sulzer Brothers Limited, Winterthur, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
13762527 ; 1376255 ; 251 68 ; 251 65 ;
Abstract
The valve seats and the valve stem of the changeover valve have different diameters from one another so that the pressure medium applied a drive force to actuate the valve. The control system is a simple and purely passive retention system without external drive, the retention being triggered by a pulse-like electric signal. The signal energy produced and transmitted within electronic control systems suffices to actuate the valve, no additional drives being necessary for such actuation.