Title:
FLUID INTENSIFIER
Document Type and Number:
Japanese Patent JP3640447
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a fluid intensifer with a simple design that can use a piston and a three-way control valve with different are as of facing surfaces.
SOLUTION: This fluid intensifier 10 includes an unequal-area pump piston 11 and a drive piston 14. A large-area pump piston chamber 21 communicates with a small-area pump piston chamber 29 via a communicating conduit 30 having a check valve 25. This pump piston is coupled to the drive piston 14 having a lost-motion connection with a two-lobed pilot valve spool. A pilot valve controls a pilot pressure Pp in a spool end chamber 60 of a spring-biased control valve, and as the pump piston approaches either end of its stroke the fluid intensifier automatically reverses and provides a substantially-constant intensified fluid pressure Pi at an outlet 24.
Inventors:
Ralph El. Big
Application Number:
JP30184595A
Publication Date:
April 20, 2005
Filing Date:
November 21, 1995
Export Citation:
Assignee:
Moog Incorporated
International Classes:
F16K11/07; F01L25/06; F04B5/00; F04B5/02; F04B9/105; F15B3/00; F15B11/028; (IPC1-7): F15B3/00
Domestic Patent References:
| JP56129778A | ||||
| JP62024001A | ||||
| JP63106903U | ||||
| JP61197301U |
Foreign References:
| EP0435196A1 | ||||
| DE3228494A1 | ||||
| US2864313 | ||||
| US3086470 |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Toru Mori
Kenji Kaneko
Hajime Asamura
Toru Mori
Kenji Kaneko