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:
Aug. 28, 1984
Filed:
Feb. 12, 1982
Donald R Gneiding, Fullerton, CA (US);
Dual Fuel Systems, Inc., Los Angeles, CA (US);
Abstract
A movable tube controls the flow of fluid from supply through a regulator to discharge in response to pressure acting on a piston in a control chamber at discharge and opposed by a spring in a spring chamber. When the discharge pressure reaches a prescribed, regulated value, the tube no longer moves. The pressure drop through the regulator occurs at the outer diameter of the tube; consequently, no area of the tube sees supply side pressure that would tend to displace the tube. On the discharge side, the tube extends into a necked passage between a control chamber and an exit port to aspirate fluid from the control chamber and compensate for loss of spring force due to spring relaxation. The tube also closes when there is a sudden loss of discharge side pressure. The tube closes on the supply side against an elastomeric seat carried by a removable plug. The spring chamber is between supply side and discharge side downstream of a seal for the tube, and any leakage past the seal goes to atmosphere through a vent. More than one inlet and exit port permits flexibility in connection.