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:
Jun. 24, 2003
Filed:
Oct. 29, 2001
Claus Emmer, Prior Lake, MN (US);
Thomas K. Drube, Lakeville, MN (US);
Jesse Gamble, Minneapolis, MN (US);
Chart Inc., Burnsville, MN (US);
Abstract
A cryogenic fluid delivery system includes an insulated storage tank containing a supply of cryogenic liquid, a pump, a heat exchanger and a gas and liquid mixer. The pump includes a pumping cylinder within which a sliding pumping piston is positioned. The pump also includes an actuating cylinder within which a sliding actuating piston is positioned. The pumping and actuating pistons are joined by a connecting rod. A portion of the cryogenic liquid pumped from the storage tank by the pumping piston and cylinder is vaporized in the heat exchanger and introduced into the actuating cylinder on alternating sides of the actuating piston to power the pump. The vaporized cryogen is also used to heat the pumped cryogenic liquid in the mixer. The conditioned cryogenic liquid is then dispensed from the mixer via a dispensing line.