Title:
PRESSURE BOOSTER
Document Type and Number:
WIPO Patent Application WO/2020/036046
Kind Code:
A1
Abstract:
A pressure booster (10) in which drive cylinders (14, 16) are arranged at both sides of a boost cylinder (12), and which is equipped with: a pair of pilot valves (72, 74) equipped with knock pins (90) that come into contact with pistons (36, 38) of the drive cylinders at a moving end; and a pair of actuation valves (48, 52) for switching the supply state of a pressure fluid with respect to pressure chambers (24a, 26a) of the drive cylinders. When a piston presses against a knock pin and one or the other pilot valve thus switches to a first position, the state in which the pressure fluid is supplied to the pair of actuation valves is switched and a prescribed fluid pressure acts on the knock pin so as to keep the pilot valve in the first position.
Inventors:
TAKADA YOSHIYUKI (JP)
MONDEN KENGO (JP)
SOMEYA KAZUTAKA (JP)
MONDEN KENGO (JP)
SOMEYA KAZUTAKA (JP)
Application Number:
PCT/JP2019/028933
Publication Date:
February 20, 2020
Filing Date:
July 24, 2019
Export Citation:
Assignee:
SMC CORP (JP)
International Classes:
F15B3/00; F04B9/115; F04B9/135
Foreign References:
| JP2018084270A | 2018-05-31 | |||
| US2296647A | 1942-09-22 | |||
| JPS4033392Y1 | 1965-11-22 | |||
| US2942553A | 1960-06-28 | |||
| CN201347907Y | 2009-11-18 | |||
| JPH0821404A | 1996-01-23 | |||
| JP2017164945A | 2017-09-21 |
Other References:
See also references of EP 3839265A4
Attorney, Agent or Firm:
CHIBA Yoshihiro et al. (JP)
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