ELEVATOR FOR DRILLING RIG Russian patent published in 2004 - IPC

Abstract RU 2237149 C2

FIELD: drilling.

SUBSTANCE: device has housing, shaft, clutch pivotally connected with the housing, catcher for rod with ring, and clamping device. The clutch and shaft are provided with working and locking cams. The clamping device is made of rollers mounted in the housing for permitting rotation parallel to the longitudinal axis of the shaft. One of the rollers is mounted eccentrically and provided with the flat for wrench.

EFFECT: simplified design.

6 dwg

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RU 2 237 149 C2

Authors

Bredikhin V.R.

Majorov O.M.

Poljakov V.V.

Moskalev M.M.

Petrishchev I.V.

Dates

2004-09-27—Published

2002-04-29—Filed