Power tool for and a method of moving an element relative to an

Details Power tool for and a method of moving an element relative to an Power tool for and a method of moving an element relative to an

1998-11-07

2000-05-09

Scherbel, David A.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 532, 254 29A, B25B 2100

Patent

active

060588101

ABSTRACT:
For moving an element in an axial direction relative to an object, a plurality of screw members are screwable in the element and are arranged around an axis so as to be spaced from one another, each of the screw members has a first end adapted to interact with the object and an opposite second end, and a drive unit includes an action drive and a reaction drive arranged coaxially to the axis and with one another and turnable in opposite directions, one of the drives engages an outer circumference of the screw members while the other drives engages an inner circumference of the screw members so that when the power tool is activated the drives are turned in opposite directions and turn the screw members in one and the same direction to thereby move the element in the axial direction.

REFERENCES:
patent: Re33490 (1990-12-01), Steinbock

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