Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Second path activated in response to pressure or flow in...
Patent
1975-05-07
1977-08-16
Cohen, Irwin C.
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
Second path activated in response to pressure or flow in...
91 31, 137110, F15B 13043
Patent
active
040418367
ABSTRACT:
An acceleration/deceleration device which, in order to achieve shockless acceleration/deceleration control in starting or stopping of the load by means of a hydraulic actuating circuit of the open circuit type, uses an amplification valve of a type such that the main flow rate may be amplified in proportion to the area ratio between a detection orifice installed in a pilot flow passage and a main orifice installed in the main flow passage and is constructed by combining the said amplification valve with a flow rate control valve for controlling the pilot flow and a control circuit for gradually changing the area of the opening of the main orifice.
REFERENCES:
patent: RE25882 (1965-10-01), Bower
patent: 3291321 (1966-12-01), Hamilton
patent: 3464444 (1969-09-01), Tennis
patent: 3534775 (1970-10-01), Tennis
patent: 3613509 (1971-10-01), Flaschar et al.
patent: 3739690 (1973-06-01), Cryder
patent: 3884253 (1975-05-01), Murata et al.
Cohen Irwin C.
Jecies Saul
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