Power swivel

Details Power swivel Power swivel

1976-05-20

1978-02-21

Purser, Ernest R.

Tool driving or impacting

Work cleansing

Drive motor or advance causing or controlling motor provided...

173163, 418248, E21B 306

Patent

active

040747751

ABSTRACT:
A power swivel particularly adapted for downhole cementing operations. The power swivel includes a housing having a fluid passageway therethrough and a stem assembly mounted for rotational movement with respect to the housing and having a fluid passageway communicating with the housing passageway. A hollow bore motor mounted with the housing receives the stem assembly through a central bore of the motor and rotates the stem assembly with respect to the housing.

REFERENCES:
patent: 1605712 (1926-11-01), Gilman
patent: 3595270 (1971-07-01), Bartos
patent: 3858666 (1975-01-01), Bailey et al.
patent: 3908767 (1975-09-01), Klemm
patent: 3949818 (1976-04-01), Russell

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