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:
Oct. 19, 1993
Filed:
Aug. 13, 1992
Applicant:
Inventor:
Evan L Craig, Chaffee, NY (US);
Assignee:
Moog Controls, Inc., East Aurora, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
13762561 ;
Abstract
A controlled orifice for a hydraulic pressure control valve has a plunger and a conic orifice seat. The plunger has a head which forms a stagnation zone, and a rim with surfaces that define a sharp edge, these surfaces making an angle of at least 30 degrees with the conic bore orifice seat. A conic back surface extends to the plunger stem. The sharp edge of the rim forms a small annular vena contracta so that the regions where rapid flow is experienced are kept as small as possible. This reduces undesirable Bernoulli forces.