Motors: expansible chamber type – Three or more cylinders arranged in parallel radial or... – Control valve seating surface contact maintained by fluid...
Patent
1985-11-27
1988-02-09
Croyle, Carlton R.
Motors: expansible chamber type
Three or more cylinders arranged in parallel radial or...
Control valve seating surface contact maintained by fluid...
91486, F01B 100
Patent
active
047234776
ABSTRACT:
A control arrangement to control the flow of fluid through pumps, motors, transmission, engines has an eccentric shoulder assembled into a respective thrust chamber in a portion of the housing to be pressed against the rotary seal face of the rotor of the device. Such arrangements are known from some of my earlier patents and have served satisfactorily, but with the desire to improve the pressures further, it has been found, that arrangements are required to prevent the control body from slight rotation, under which it otherwise would stick. The arrangement provides the means to prevent the rotation and sticking by defining a relationship between eccentricities and gravity centers in order to reduce the tendency to stick. Pins and pins with eccentric and adjustable portions are also used to prevent the tendency to stick and so are pluralities of eccentrically arranged individual thrust chambers and control body portions. A specific feature of the embodiment which is claimed consists in a control body with only two seats for reversible directions of flow of fluid and for high performance of operation with low friction an small leakage.
REFERENCES:
patent: 2861552 (1958-11-01), Creighton et al.
patent: 3092036 (1963-06-01), Creighton
patent: 3170297 (1965-02-01), Larson
patent: 3960060 (1976-01-01), Eickmann
patent: 4181067 (1980-01-01), Ortelli
Croyle Carlton R.
Neils Paul F.
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