Tools for use in tightening or removing screw- threaded...

Details Tools for use in tightening or removing screw- threaded... Tools for use in tightening or removing screw- threaded...

B - Operations, Transporting

25

B

81/25

B25B 17/00 (2006.01) B25B 21/00 (2006.01) B25B 23/00 (2006.01) B25B 23/10 (2006.01) B25F 3/00 (2006.01)

Patent

CA 1240857

ABSTRACT A device for rotating a screw into or out of a workpiece, the device being connectible to a power drill and including a screw driving member. There is provided between the power drill and the screw driving member a mechanism for determining the direction of rotation of the screw-driving member and a torque-adjusting mechanism for controlling the depth a screw is to be driven into a workpiece and including clutch means rotatably associated with the rotational-direction determining mechanism. The rotational-direction determining mechanism comprises a planetary gear system, whereof the planet carrier is adapted to be locked to effect rotation of the screw-driving member in a screw-extraction sense (i.e. reverse rotation) or to be released to effect rotation of the screw-driving member in a screw-insertion sense (i.e. forwards rotation).

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