Inlet and outlet ports and sealing means for a fluid driven moto

Details Inlet and outlet ports and sealing means for a fluid driven moto Inlet and outlet ports and sealing means for a fluid driven moto

1975-03-06

1976-06-29

Croyle, Carlton R.

Rotary expansible chamber devices

With mechanical sealing

Seal element between stationary cylinder parts

418153, 418270, 175107, F04C 2700

Patent

active

039663698

ABSTRACT:
An improved positive displacement motor suitable for use in downhole drilling at the end of a drill string and driven by fluid, e.g., liquid mud, under high pressures. The motor has a novel arrangement of inlet and outlet ports in longitudinally extending circumferentially spaced rows for providing fluid at a substantially uniform pressure along substantially the length of the blades driving the motor so as to equalize the driving torque along the length of the rotor and avoid pressure differentials tending to twist the blade. A continuous ring isolates the adjacent rows of inlet and outlet ports.

REFERENCES:
patent: 1995755 (1935-03-01), Smith
patent: 2733663 (1956-02-01), Marshall
patent: 2984219 (1961-05-01), Mitchell
patent: 3076514 (1963-02-01), Garrison
patent: 3398644 (1968-08-01), Wetzel et al.
patent: 3594106 (1971-07-01), Garrison

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