Spinner for use in connecting pipe joints

Details Spinner for use in connecting pipe joints Spinner for use in connecting pipe joints

1983-10-06

1987-08-04

Schran, Donald R.

Tool driving or impacting

Means to drive tool about an axis

Means to hold and relatively rotate sections of tool shaft

175195, 474101, E21B 1916

Patent

active

046839623

ABSTRACT:
A spinner for rotating a pipe, such as a spinner mandrel, including a chambered frame having aligned openings through which the pipe can be inserted, drive assembly, such as a sprocket, rotatably mounted in the chamber, endless flexible spinning member, such as a multistrand roller chain, normally slackly encircling the pipe and the drive assembly, and clutch assembly, such as an idler sprocket in engagement with the multistrand roller chain and a hydraulically actuatable piston for laterally moving the idler sprocket, for decreasing the slack sufficiently to force the endless spinning member into frictional rotational driving engagement with the pipe. The preferred embodiment comprises a kelly spinner for use on an oil rig for independently spinning the kelly in order to more safely connect and disconnect drill pipe joints with the kelly during drilling operations.

REFERENCES:
patent: 3144085 (1964-08-01), Hasha
patent: 3191450 (1965-06-01), Wilson
patent: 3665780 (1972-05-01), Lunenschloss
patent: 3892140 (1975-07-01), Fox et al.
patent: 3906820 (1975-09-01), Hauk
patent: 4079640 (1978-03-01), Golden

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