Rotary expansible chamber devices – Unlike helical surfaces on relatively wobbling rotating...
Patent
1985-03-13
1987-01-13
Vrablik, John J.
Rotary expansible chamber devices
Unlike helical surfaces on relatively wobbling rotating...
418182, 464 97, F03C 200, F16D 304
Patent
active
046361510
ABSTRACT:
A downhole motor of the progressive cavity, or Moineau, type. The motor has a stator, and a rotor within the stator. The rotor rotates and gyrates in response to fluid flow through the stator. A shaft is located within a housing which is connected to the stator. A flexible rod extends between the rotor and the shaft for translating the rotation and gyration of the rotor to the true rotation of the shaft. The rod has an upset section on each end, and upper and lower connections connect the upset sections of the rod to the rotor and to the shaft. The connections are nonintegral to the rod, and are made of a different material from the rod.
REFERENCES:
patent: 2028407 (1936-01-01), Moineau
patent: 2346426 (1944-04-01), Hait
patent: 2621605 (1952-12-01), Mark, Jr.
patent: 3155187 (1964-11-01), DeLorean
patent: 3340814 (1967-09-01), Streicher
patent: 3600113 (1971-08-01), Pahl et al.
patent: 3612734 (1971-10-01), Dawson et al.
patent: 3894818 (1975-07-01), Tschirky
patent: 4080115 (1978-03-01), Sims et al.
patent: 4140444 (1979-02-01), Allen
patent: 4187918 (1980-02-01), Clark
Hughes Tool Company
Kelly H. Dennis
Vrablik John J.
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