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. 27, 2002
Filed:
Jun. 02, 2000
Josef Pozivil, Haselweg, CH;
Cryostar-France SA, Hesingue, FR;
Abstract
A cryogenic turbo-expander has a rotary shaft which carries a turbine wheel and carries or is operatively associated with an energy dissipating device and which extends axially through a sleeve. Two sets of bearings, which are housed by two races surrounding the shaft, are axially spaced from one another. Each race has an aperture therein extending from an outer to an inner surface thereof communicating with a lubricating oil passage extending from an outer surface to an inner surface of the sleeve. Both races are arranged so that spent lubricating oil can pass therefrom to a common drain passage. The cryogenic turbo-expander additionally includes a reservoir for lubricating oil communicating with the aperture in the first race via an intermittently-operable metering pump and with the second race via an intermittently operable metering pump.