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, 1988
Filed:
Jul. 23, 1986
Jack A Dimock, Santa Barbara, CA (US);
The BOC Group, Inc., Montvale, NJ (US);
Abstract
A gate valve, for use with evacuable equipment, includes a housing having a pair of aligned ports in opposed walls. A valve seat surrounds one of the ports. A gate member is reciprocally translatable by means of a linear actuator in a direction generally normal to the central axis of the valve seat. Magnetic structures are operably associated with the gate and valve seat for pulling the gate and seat into sealing engagement for closure of the gate valve by exerting a closure force generally parallel to the axis of the valve seat. The linear actuator includes a hollow cylinder having a piston movable therein and axially thereof which is magnetically coupled through the walls of the cylinder to an actuator member mechanically coupled to the gate for effecting reciprocal motion thereof.