Rotation tool
OwnerJerry L. Swinfordinventor
Life of this patent
Estimating the term…
Abstract
A downhole rotation tool comprises a housing rotatable and axially slideable in relation to a gear shaft. The gear shaft is located interior of the housing. A tube gear is located intermediate the gear shaft and the housing. Helical threading on the gear shaft exterior interacts with helical threading interior of the tube gear to impart rotation of the tube gear upon linear movement of the gear shaft. A gear face at a lower end of the tube gear interacts with a corresponding gear face on the housing. Face gear teeth of the tube gear and the housing include axially-aligned engaging surfaces to rotate the housing in a preferred direction on downward stroke of the gear shaft and include inclined slip surfaces to allow relative rotation of the housing gear face and the tube gear face upon upward stroke of the gear shaft.
Claims18
A rotation tool for use in a well borehole, comprising:
- a housing;
- said housing having a housing gear face;
- a gear shaft;
- said gear shaft having helical threading;
- a tube gear;
- said tube gear having helical threading engaging said gear shaft threading;
- said tube gear having a tube gear face engaging said housing gear face;
- said tube gear face and said housing gear face cooperatively comprising a face gear;
- said tube gear operable to transmit linear movement of said gear shaft to rotational movement of said housing;
- and
- said face gear operable to transmit rotation of said tube gear to rotation of said housing gear face in a first direction.
A rotation tool, comprising:
- a housing having a longitudinal bore therein and a housing gear face within the bore;
- a gear shaft slidably moveable in relation to the housing between an upper position and a lower position;
- the gear shaft having an upper end and a lower end and helical threading formed on at least a portion of its surface;
- a tube gear disposed within the housing intermediate the housing and the gear shaft;
- said tube gear having helical threading engaging said gear shaft threading;
- said tube gear having a toothed gear face;
- and
- said tube gear face engaging said housing gear face.
Dependencies are inferred from the claim text.