US PATENT SUBCLASS 81 / 58
.~ Handle clutched to head

Current as of: June, 1999
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81 /   HD   TOOLS

52  DF  WRENCH, SCREWDRIVER, OR DRIVER THEREFOR {27}
58.~ Handle clutched to head {7}
58.1  DF  .~.~> With additional head-turning means
58.2  DF  .~.~> Radially slotted or open end head
58.3  DF  .~.~> Axially movable clutching parts
58.4  DF  .~.~> Positive two-way drive (e.g., dog clutch)
58.5  DF  .~.~> Radially extending eccentrically movable handle
59.1  DF  .~.~> Ball or roller wedge
60  DF  .~.~> One-way detent drive, e.g., ratchet {2}

DEFINITION

Classification: 81/58

(under subclass 52) Wrench or screwdriver wherein the head or driven part is rotatable through 360o or more with respect to the handle or driving part, there being inter-engaging means on the handle and head to permit intermittent or continuous driving engagement between the head and handle.

SEE OR SEARCH THIS CLASS, SUBCLASS:

29+, for bit stocks provided with ratchet mechanism for driving the bit.

177.7+, for wrenches wherein the handle is adjustable with respect to the head, the adjustment being less than 360o.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

126+, for oscillating to intermittent unidirectional intermittent grip type mechanical movements, and subclasses 144+ for grip units, per se. 192, Clutches and Power-Stop Control,

30+, for clutches, per se.