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. 02, 1983
Filed:
Oct. 31, 1980
David R Thompson, Kenmore, NY (US);
Boris Pevzner, Williamsville, NY (US);
Union Carbide Corporation, Danbury, CT (US);
Abstract
The cryogenic pump is of the reciprocating type using a differential diameter piston assembly having a reciprocating piston and piston rod in which the piston is of a diameter larger than the piston rod so as to form a variable volume annulus within the pumping chamber about the piston rod. The pumping chamber is surrounded with a cooling jacket connected by a passageway to the variable volume annulus. Blow by fluid is collected in the variable volume annulus during each suction stroke of the reciprocating piston and passed into the cooling jacket during each discharge stroke so as to cause collected blow by liquid in the cooling jacket to flash during consecutive discharge strokes.