Reversible screwdriver with angle and length adjustable driving shaft
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United States of America Patent
Stats
-
Aug 31, 1999
Grant Date -
N/A
app pub date -
Dec 31, 1997
filing date -
Dec 31, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hand tool which includes a handle holding a sleeve on the inside, a shaft moved in and out of the sleeve, a coupling member pivoted to the shaft and turned between a first position where the coupling member and the shaft are axially aligned, and a second position where the coupling member and the shaft are retained at right angles, and a control device coupled to the coupling member and shifted between a first position for forward/backward driving, a second position for forward driving only, and a third position for backward driving only.
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