Acoustics – Geophysical or subsurface exploration – Seismic wave generation
Patent
1978-01-27
1981-05-05
Maslousky, Paul E.
Acoustics
Geophysical or subsurface exploration
Seismic wave generation
367190, 91 39, 91388, F15B 1316, F15B 2102
Patent
active
042653312
ABSTRACT:
Two fluid passages are connected through flow restrictors to a fluid supply. Downstream of the restrictors the fluid supply has a drooping pressure-load characteristic. Venting means for the fluid passages comprises vent openings therein downstream of the restrictors and variable position obstructor means cooperating with vent openings to vary venting and thereby vary fluid pressures in the fluid passages.
Fluid conduits connect these pressure outputs to a double acting piston moving in a cylinder whose opposite ends are connected to the fluid conduits. The piston and cylinder form the responder of the system.
A receiver is formed by a piston and cylinder or other fluidic motor remotely fluidically connected to the responder, the motor driving a load.
A feedback means controlled by the position of the responder piston and/or the load varies pressure in the fluid conduits by variably venting same.
The system can be employed for driving a seismic generator or controlling a variable bight to compensate a crane loading a floating vessel.
REFERENCES:
patent: 1822667 (1931-09-01), Proell
patent: 2973746 (1961-03-01), Jupa
patent: 2974639 (1961-03-01), O'Connor et al.
patent: 3076442 (1963-02-01), Raeber
patent: 3415163 (1968-12-01), Inaba et al.
patent: 3543648 (1970-12-01), Stahle
patent: 3548876 (1970-12-01), Viersma
patent: 3872773 (1975-03-01), Denker
Conley Ned L.
Maslousky Paul E.
Robinson Murray
Rose David Alan
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