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:
May. 31, 1977
Filed:
Jan. 31, 1975
Marvin H Grove, Houston, TX (US);
M & J Valve Company, Houston, TX (US);
Abstract
A fluid flow control apparatus making use of sealing means formed in two parts, one being carried by the body and the other by an operating rod or strut which reciprocates between operating positions. One of the parts is a sealing assembly which carries resilient sealing means, and the other part provides a cylindrical surface with which the sealing assembly cooperates. The sealing assembly is characterized by the use of one and preferably two cup-shaped sealing members of resilient material which are assembled and restrained by means which prevents fluid differential pressures or fluid flow from disrupting or distorting the sealing members from normal operating configurations. In one embodiment, the sealing assembly is in the form of a plunger which is movable into and out of a cylindrical sleeve carried by the body. In another embodiment the sealing assembly is carried by the body, and the other part provides the cylindrical surface and forms a closure which can be moved into and out of the sealing assembly.