Pressure booster
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United States of America Patent
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-
Jan 20, 2004
Grant Date -
Mar 27, 2003
app pub date -
Jun 28, 2002
filing date -
Dec 29, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pressure booster comprising a housing (11) with a low-pressure fluid inlet (14), a high-pressure fluid outlet (15), and an inlet (16) and an outlet (17) for compressed air. In the housing (11) there is provided a main piston (22) with an enlarged portion (23), which together with the housing (11) define a third cylinder space (26), which can be connected to the compressed air inlet (16). Furthermore, the main piston (22) has a small end portion (22b) which together with the housing define a second cylinder space (27) and whereby fluid at increased pressure can be moved out of the housing (11) via a high-pressure fluid outlet (15) when the third cylinder space (26) is supplied with compressed air. In an axial passage (29) there is mounted a check valve (30), which can be influenced by a body.
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