Slot screwdriver
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United States of America Patent
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-
Nov 9, 1993
Grant Date -
N/A
app pub date -
Apr 16, 1992
filing date -
May 2, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A slot screwdriver with convex wide-side surfaces of the blade (3, 19) on its working end (8, 20) and, in order to optimize the use thereof, it proposes that the convexity be formed of two convex arcs (10, 21) present on each wide-side surface and lying symmetrically on both sides of the transverse center plane (A--A) of the blade (3, 19).
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