Motors: expansible chamber type – Three or more cylinders arranged in parallel radial or... – Cylinders parallel to rotation axis
Patent
1979-04-06
1983-09-20
Maslousky, Paul E.
Motors: expansible chamber type
Three or more cylinders arranged in parallel radial or...
Cylinders parallel to rotation axis
91 48, 91 51, 91374, 91444, 91461, F01B 300, F15B 910
Patent
active
044048971
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.
Both rotary and linear types of transmitters and load feedback means and receivers may be used.
The transmitter may vary the pressure in each of two lines, but directly varying the pressure in only one line at a time, and may be operated by a single control or by two controls, each varying the pressure in one line, or by one control varying the restriction and the other selecting the line, and may be used to operate a swash plate pump/motor load, with pressure override and emergency stop controls.
The responder may form an annular space between each piston land and either side of a cylinder flange.
REFERENCES:
patent: 2619794 (1952-12-01), Lombard
patent: 2841168 (1958-07-01), Levetus et al.
patent: 3017868 (1962-01-01), Ginder
patent: 3187509 (1965-06-01), Moon, Jr.
patent: 3211182 (1965-10-01), Gyurik et al.
Conley Ned L.
Maslousky Paul E.
Robinson Murray
Rose David Alan
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