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:
Nov. 19, 2002
Filed:
Feb. 04, 2002
Helmut Drelser, Trostberg, DE;
Linde Gas Aktiengesellschaft, Wiesbaden, DE;
Abstract
The invention relates to a pump system for delivering cryogenic liquids. Said pump system can be used for refuelling motor vehicles with H and consists of a container ( ) for receiving the cryogenic liquid. At least one pump ( ) is arranged in said container ( ) and delivers the cryogenic liquid to a pressure housing ( ) which is connected to a user, e.g. a motor vehicle, via an output line ( ). The liquid level (m) in the container ( ) is automatically maintained by means of a special arrangement of the liquid inlet (i) and the gas recirculating line (j) and by separating the container ( ) into two chambers (h and f) which are preferably separated by the pressure housing ( ). A secure operating mode of the pump system is thus obtained.