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:
Jul. 16, 2002
Filed:
May. 05, 2000
Svante Bahrton, Hägersten, SE;
Other;
Abstract
A valve housing ( ) includes an inlet port ( ) and two outlet ports ( ) for fluid passing through the housing. A valve element ( ) accommodated in the valve housing is moveable freely between two end positions and has two surfaces ( ) each adapted to close a respective outlet port in one and the other of the two end positions of the valve element. The valve element further includes members ( ) for resetting between the positions. A double-action pump includes two spaces or rooms that have valve-controlled inlets and outlets ( ) for drive fluid and pump-transported working fluid respectively. The spaces are divided into an operating chamber ( ) and a working chamber ( ) by partition walls ( ) which are pistons or diaphragms ( ) and reciprocatingly move between end positions. The partition walls are interconnected by a movement transmission member ( ) and working fluid is pressed out of one of the working chambers and drawn into the other. The operating chamber inlets ( ) are each connected to a respective outlet port ( or ). The pump includes resetting member which at the end positions causes the valve element ( ) to be moved over only a part of its movement path to its opposite end position.