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Patent Searching and Data


Title:
PRESSURE BOOSTER WITH DOUBLE-SEAT VALVE
Document Type and Number:
WIPO Patent Application WO2008019889
Kind Code:
A8
Abstract:
The invention relates to a pressure booster (1) for fluids, in particular hydraulic fluids, having a booster piston (2) which is embodied as a differential piston and having a control piston unit (5), wherein the pressure booster (1) is embodied such that the low-pressure side (NA) of the booster piston (2) can be alternately connected by means of the control piston unit (5) via a cylinder line (C) to a low-pressure feed line (P) and a discharge line (T), and the high-pressure side (HA) of the booster piston (2) can be alternately connected to a high-pressure load line (V) and a low-pressure feed line (P), and the booster piston (2) also interacts with the control piston unit (5) by means of a control line (11) in such a way that the pressure which acts in the control line (11) determines the position of the control piston unit (5), wherein the control piston unit (5) has two elements (5A, 5B) which are embodied as seat valves and which interact with in each case one valve seat (6.1 and 6.2) and which are designed such that one of the sections (5A) intermittently seals off the low-pressure feed line (P), which can be connected to the low-pressure side (NA) of the booster piston (2), with respect to the cylinder line (C) and the discharge line (T), and the other section (5B) intermittently seals off the discharge line (T), which can be connected to the low-pressure side (NA) of the booster piston (2), with respect to the cylinder line (C) and the low-pressure feed line (P).

Inventors:
IVERSEN JESPER WILL (DK)
Application Number:
PCT/EP2007/007340
Publication Date:
May 08, 2008
Filing Date:
August 20, 2007
Export Citation:
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Assignee:
SCANWILL APS (DK)
IVERSEN JESPER WILL (DK)
International Classes:
F15B3/00; F04B9/105
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