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. 12, 1992
Filed:
Sep. 24, 1991
Raymond J O'Connor, Farnham, GB;
Nicholas C Henly, Petersfield, GB;
Ferranti International plc, , GB;
Abstract
A valve which allows the rapid discharge of a fluid from a reservoir (13) to a working volume (12) includes a housing (10) and a cylindrical sleeve (14) movable axially within the housing between a closed position in which it separates the reservoir (13) from the working volume (12) and an open position in which the reservoir (13) communicates with the working volume (12). Sealing means (20, 21) are provided to prevent leakgage of the fluid when the sleeve is in the closed position. Actuating means are provided for moving the sleeve (14) between its two positions. The sealing means comprises seals (20, 21) located to engage one end (19) of the sleeve around the outer and inner peripheries respectively when the sleeve (14) is in the closed position. One seal (20) is forced into engagement with the sleeve (14) by the pressure of fluid in the reservoir (13) and the other seal (21) is forced into engagement with the sleeve (14) only when fluid pressure is applied by the actuating means to move the sleeve (14) from its closed position to its open position.