US PATENT SUBCLASS 173 / 93.5
.~.~ Rotary tool drive having torque responsive impact

Current as of: June, 1999
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173 /   HD   TOOL DRIVING OR IMPACTING

90  DF  IMPACTING DEVICES (E.G., HAMMERS) {19}
93  DF  .~ With anvil arranged to transmit torsional impact to tool {2}
93.5.~.~ Rotary tool drive having torque responsive impact {1}
93.6  DF  .~.~.~> Hammer head reciprocates along rotary axis

DEFINITION

Classification: 173/93.5

(under subclass 93) Apparatus in which driving means for the hammer head rotates the tool without impact under one torsional load condition and includes means which release or yield under a different torsional load condition whereby the hammer head delivers a blow to the anvil to cause rotary movement of the tool.

SEE OR SEARCH THIS CLASS, SUBCLASS:

48, for a tool drive which is selectively adjustable to completely change the type of tool drive from rotary to impact.

SEE OR SEARCH CLASS

464, Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts,

30+, for rotary displacement between a shaft and a driven member occurring upon imposition of excessive torsional load.