Rotating head

Details Rotating head Rotating head

1986-03-17

1988-05-24

Leppink, James A.

Wells

Above ground apparatus

With seal for reciprocating member

E21B 3303

Patent

active

047459700

ABSTRACT:
An improved rotating head having an inner barrel disposed within and rotatingly supported on an outer barrel wherein a rotary drive member is connected to the inner barrel. A kelly is extendable through the inner barrel and the rotary drive member is adapted to grippingly and sealingly engage the kelly so that rotation of the kelly causes rotation of the rotary drive member and the inner barrel connected thereto, the engagement between the rotary drive member and the kelly providing the sole source for rotating the rotary drive member and the inner barrel connected thereto. The rotary head also includes a bearing adjustment assembly which facilitates the rotatability of the inner barrel.

REFERENCES:
patent: 830100 (1906-09-01), Post
patent: 2398459 (1946-04-01), Province
patent: 3052300 (1962-09-01), Hampton
patent: 4293047 (1981-10-01), Young
patent: 4340262 (1982-07-01), Rugh et al.
patent: 4363357 (1982-12-01), Hunter
patent: 4526243 (1985-07-01), Young
patent: 4531591 (1985-07-01), Johnston
patent: 4560001 (1985-12-01), Gonzales

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