US PATENT SUBCLASS 81 / 30
.~.~ Straight crank arm

Current as of: June, 1999
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81 /   HD   TOOLS

28  DF  BIT STOCK HAVING MANUAL DRIVE MEANS (E.G.,BRACE) {3}
29  DF  .~ Having ratchet mechanism {4}
30.~.~ Straight crank arm

DEFINITION

Classification: 81/30

Straight crank arm:

(under subclass 29) Device wherein the driving element consists of a lever arm extending perpendicular to the bit.

(1) Note. The lever may be pivoted to the member to be folded when not in use.