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. 11, 2004
Filed:
Dec. 22, 2000
Applicant:
Inventors:
John Buysse, St. Paul, MN (US);
Rick Story, Jacksonville, FL (US);
Assignee:
STAC, Inc., St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D 1/600 ; G05D 2/300 ; F17C 1/300 ; F17C 1/302 ;
U.S. Cl.
CPC ...
G05D 1/600 ; G05D 2/300 ; F17C 1/300 ; F17C 1/302 ;
Abstract
A fluid delivery system, for e.g. a vehicle, includes a tank for holding fluid product, such as propane, a pump for pumping the fluid product from the tank, the pump being driven by hydraulic fluid, and a heat exchanger for using the fluid product to cool the hydraulic fluid. The heat exchanger also causes the fluid product to increase in temperature. The heated fluid product is returned to the tank, in the form of a vapor, for example. Embodiments of the invention provide a number of advantages, including increased pump flow rates, reduced cavitation, increased pump life, and elimination of a heat-exchanger fan.