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:
Jun. 17, 1997
Filed:
Jan. 11, 1996
Robert F Miller, Arcadia, CA (US);
Vemco Corporation, San Dimas, CA (US);
Abstract
A valve unit to control the flow of high-pressure fluid comprising a housing having a fluid inlet and a fluid outlet; a flow port in the housing communicating between the inlet and outlet, and a seat about the flow port; stem structure in the housing, and a stopper carried by the stem structure to be moved therewith toward and away from the seat; multiple stacked metallic diaphragms connected to the stem structure and to the housing, to flex and seal off therebetween as the stem structure moves, there being a flow chamber in the housing at one side of the diaphragms, and a control chamber in the housing at the opposite side of the diaphragms; control structure carried by the housing and extending into the control chamber to effect the movement of the stem structure, the control structure being movable relative to the housing; and deformable cushion structure in the control chamber to cushion movement of the diaphragm in one direction, and to conform to diaphragm flexing; the diaphragms having outer portions thereof concave toward the flow chamber.