EP 0174269 A3 19870325 - PUMP FOR CRYOGENIC FLUIDS
Title (en)
PUMP FOR CRYOGENIC FLUIDS
Publication
Application
Priority
CH 353584 A 19840720
Abstract (en)
[origin: US4639197A] The cryogenic pump operates in two stages, utilizing a supercharging part and a high pressure part. These two parts are comprised of a high pressure piston pump (3, 4, 34, 35) and a supercharger (5, 6, 61, 62) disposed in a tandem relationship and sharing a common piston rod (8). The supercharger is enclosed in a heat insulated intermediate container (7) and delivers the liquid cryogenic fluid to the high pressure cylinder. The pump operates to convey a liquid cryogenic fluid such as liquid nitrogen, for example, at a high pressure through evaporating means into pressure resistant commercial steel cylinders where the gaseous nitrogen is kept at a pressure of 200 bar and ambient temperature.
IPC 1-7
IPC 8 full level
F04B 3/00 (2006.01); F04B 15/08 (2006.01); F17C 5/02 (2006.01)
CPC (source: EP US)
F04B 3/00 (2013.01 - EP US); F04B 15/08 (2013.01 - EP US); F17C 5/02 (2013.01 - EP US); F17C 2221/014 (2013.01 - EP US); F17C 2223/0161 (2013.01 - EP US); F17C 2223/033 (2013.01 - EP US); F17C 2225/0123 (2013.01 - EP US); F17C 2225/036 (2013.01 - EP US); F17C 2227/0135 (2013.01 - EP US); Y10S 417/901 (2013.01 - EP US)
Citation (search report)
- [Y] US 3036529 A 19620529 - ARCHER WILLIAM G
- [Y] US 2931313 A 19600405 - HUGHES ROBERT W
- [AD] CH 615982 A5 19800229 - SOCSIL SA [CH]
- [A] US 4396354 A 19830802 - THOMPSON DAVID R, et al
- [A] GB 674669 A 19520625 - LINDE AIR PROD CO
Designated contracting state (EPC)
AT BE DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0174269 A2 19860312; EP 0174269 A3 19870325; EP 0174269 B1 19900117; AT E49629 T1 19900215; CA 1250219 A 19890221; CH 663065 A5 19871113; DE 3575454 D1 19900222; US 4639197 A 19870127
DOCDB simple family (application)
EP 85810315 A 19850708; AT 85810315 T 19850708; CA 477932 A 19850329; CH 353584 A 19840720; DE 3575454 T 19850708; US 69775685 A 19850204