Power plants – Pressure fluid source and motor – Pulsator
Patent
1994-03-17
1996-07-09
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Pulsator
91361, 100270, F15B 700, B30B 108
Patent
active
055333362
ABSTRACT:
The present invention describes an apparatus for achieving power amplification in general press and elevating systems with enhanced control and without the disadvantages of the pneumatic and angle-linked devices. A motor is coupled to a screw and nut for delivering force to at least one transfer piston within a fixed volume at the base of a larger piston. Amplification of power is attained when transfer piston displaces the fluid within the fixed volume. A pressure sensor in the fixed volume and coupled to the motor provides the closed loop feedback required of the control of power amplification. The change in force exerted by the transfer piston has linear relationship with the change in power output of the larger piston.
REFERENCES:
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patent: 2587571 (1952-02-01), Lombard
patent: 3095190 (1963-06-01), Freund
patent: 3595163 (1971-07-01), Baumann
patent: 4896594 (1990-01-01), Baur et al.
patent: 4898082 (1990-02-01), Pottorff
patent: 5031506 (1991-07-01), Baisch et al.
patent: 5140895 (1992-08-01), Imanishi
patent: 5253572 (1993-10-01), Uehara et al.
Choy Tan H.
Kiat Ho B.
Advanced Systems Automation Pte Ltd
Ho Lawrence Y. D.
Nguyen Hoang
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