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:
Feb. 21, 1995
Filed:
Mar. 28, 1994
Applicant:
Inventor:
Edward Frazzini, Corning, NY (US);
Assignee:
Dresser-Rand Company, Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137496 ; 137535 ; 13751617 ;
Abstract
A valve seat and valve guard are coupled together, and form a chamber therebetween within which a valving plate moves. A stud secures the seat and guard together, and has a bore formed therewithin for receiving a headed piston. The piston has a projecting rod which engages the valving plate, and a pilot hole formed in the stud addresses a pressured fluid thereinto for moving the piston, causing the rod to move the plate laterally in the chamber. Apertures in the seat, guard and plate align, when pressured fluid enters the seat apertures, as the plate rises from the seat, and combines with the lateral movement to displace the plate diagonally in the chamber.