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:
Nov. 05, 1991
Filed:
Dec. 28, 1990
David E Woollums, Allen, TX (US);
Donald D Rice, Wylie, TX (US);
Fisher Controls International, Inc., Clayton, MO (US);
Abstract
A drop compensated pressure regulator includes a spring casing, housing a regulator spring and a relief spring, a lower casing and a diaphragm sandwiched between the two casings. The lower casing has inlet and outlet ports. A one piece cam stem and relief seat is mounted for movement with the diaphragm and includes a cam surface that engages a movable disk holder. The disk holder is movable in a straight line within an orifice tube that supports a valve seat. A cylindrical lower spring seat is coupled by an O ring to the inner wall of the spring casing to dampen vibrations. The cam stem has built in stops to retain it within the orifice tube.