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:
Apr. 20, 2004
Filed:
Apr. 16, 2002
Helmut Dresler, Trostberg, DE;
Linde AG, Hollriegelskreuth, DE;
Abstract
A pump system for delivering cryogenic liquids is proposed that is suitable, for example, for refueling motor vehicles with H . It consists of a container for receiving the cryogenic liquid, in which at least one pump is arranged that is designed as a reciprocating pump with connecting rod actuation and spring recover. Pump cylinder ( ) of the reciprocating pump is divided by means of plunger ( ) into two chambers (a and b) that are arranged on the pressure side or the induction side. By exerting tensile forces on connecting rod ( ), in the pressure stroke the cryogenic liquid that is located in the container is initially trapped in chamber (b). When connecting rod ( ) is returned to its starting position by return spring ( ), the liquid that is trapped in chamber (b) is then hurled without pressure into chamber (a). In the subsequent pressure stroke, the liquid is finally released via a gap (d) to a pressure housing and from there to the consumer by exerting tensile forces on connecting rod ( ).