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:
Dec. 26, 1989
Filed:
Jan. 30, 1989
Applicant:
Inventor:
Earl L Wilson, Springfield, OR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
137113 ; 137102 ;
Abstract
Shut-off valves each in place on a gas cylinder include a spring biased tubular spool also responsive to cylinder pressure. The valves direct a high pressure gas flow from their cylinder to a switching valve. The switching valve has a spring biased spool with axial passageways which serve to communicate one of a pair of inlet ports with an outlet port of the valve to provide a pressurized flow to a carbonator type outlet. Venting of the switching valve, to permit spool shifting, is done remotely by the shut-off valve associated with a partially used cylinder. An indicator gauge on the switching valve identifies which cylinder is in use.