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:
Mar. 31, 1998
Filed:
Nov. 08, 1996
Applicant:
Inventor:
David William Birch, Bordon, GB;
Assignee:
The BOC Group plc, Windlesham, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G05D / ; G05D / ;
U.S. Cl.
CPC ...
13750511 ; 13750528 ; 13761418 ; 141 21 ;
Abstract
A pressure reduction valve 2 includes a piston 12, a pressure regulating sub-chamber 50 and a movable means, preferably in the form of a second piston 12', which is activated by a filling nozzle 70 to prevent the flow of fluid between an inlet 8 and the regulating sub-chamber 50 thereby to allow the flow of fluid through the valve between an outlet 10 and an inlet 8. This allows a cylinder to be filled whilst the pressure reduction valve 2 is in situ.