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:
Jul. 06, 1999
Filed:
Dec. 15, 1997
Applicant:
Inventor:
Noel Otto, Whippany, NJ (US);
Assignee:
Automatic Switch Company, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251 3004 ; 251118 ;
Abstract
A proportional flow valve wherein inlet fluid pressure urges a main valve member toward a valve seat. A cylindrical bearing ring is mounted on the main valve member and slideable within an axial bore leading from the main valve seat to an outlet port for axially stabilizing the main valve member and limiting pressure differential across the main valve member while the bearing ring is at least partially disposed within the axial bore. The outer circumference of the bearing ring may have circumferential grooves for producing eddy currents and turbulence to enhance the limitation of pressure differential across the main valve member.