Title:
VALVE FOR CONTROLLING LIQUIDS
Document Type and Number:
WIPO Patent Application WO/2004/104403
Kind Code:
A1
Abstract:
Disclosed is a valve for controlling liquids, comprising a retaining member (31) that is provided with an accommodating space (32) inside which an especially piezoelectric actuator unit and a hydraulic coupling module (34) are arranged. Said coupling module (34) encompasses at least one positioning piston (37) and at least one actuating piston (39) that is effectively connected to the positioning piston (37) via a hydraulic coupler (38) and actuates a valve-closing member (27) which cooperates with at least one valve seat (29, 30) and blocks a fluid from flowing from a valve chamber (25) to a backflow duct (45) in the closed position. The positioning piston (37) is directed within the accommodating space (32) by means of a seal (50).
Inventors:
RUTHARDT SIEGFRIED (DE)
STREICHER BERND (DE)
STREICHER BERND (DE)
Application Number:
PCT/DE2004/000566
Publication Date:
December 02, 2004
Filing Date:
March 19, 2004
Export Citation:
Assignee:
BOSCH GMBH ROBERT (DE)
RUTHARDT SIEGFRIED (DE)
STREICHER BERND (DE)
RUTHARDT SIEGFRIED (DE)
STREICHER BERND (DE)
International Classes:
F02M47/02; F02M59/46; F02M63/00; (IPC1-7): F02M47/02; F02M51/06; F02M59/46
Foreign References:
| US6062533A | 2000-05-16 | |||
| DE19838862A1 | 2000-03-09 | |||
| FR2586758A1 | 1987-03-06 | |||
| US4022166A | 1977-05-10 |
Attorney, Agent or Firm:
ROBERT BOSCH GMBH (Stuttgart, DE)
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