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:
Sep. 19, 2017
Filed:
Nov. 26, 2012
Cryostar Sas, Hesingue, FR;
Pierre Papirer, Reiningue, FR;
Stephane Sgambati, Balderscheim, FR;
Cryostar SAS, Hesingue, FR;
Abstract
A reciprocating cryogenic pumpcomprises a piston reciprocable within a pumping chamber. The pumping chamberhas an inlet suction valvefor cryogenic liquid to be pumped and an outletfor high pressure cryogenic liquid. The inlet valvefor the cryogenic liquid communicates with a cryogenic liquid reception chamberin the cold end or headof the pump. The pump headis at least partially surrounded by a first jacketretaining primary vacuum insulation. The first jacketis itself at least partly surrounded by a second jacket. The jacketdefines a chamber for the reception of a coolant fluid such as liquid nitrogen and the second jacket has an inletand an outletfor the liquid nitrogen. The thermal insulation can be further enhanced by a trapped gas spacebetween the first jacketand an inner sleeve, the latter defining with an outer sleevevacuum insulation for the pumping chamber