US PATENT SUBCLASS 73 / 862.21
.~.~.~ For making or breaking threaded connections (e.g., torque measuring wrenches)

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

862  DF  DYNAMOMETERS {5}
862.08  DF  .~ Responsive to torque {2}
862.191  DF  .~.~ During transmission to an external load {11}
862.21.~.~.~ For making or breaking threaded connections (e.g., torque measuring wrenches) {4}
862.22  DF  .~.~.~.~> With variable capacity or sensitivity
862.23  DF  .~.~.~.~> With detection of specific torque value or condition (e.g., peak torque) {1}
862.25  DF  .~.~.~.~> Power tongs
862.26  DF  .~.~.~.~> Bending beam type

DEFINITION

Classification: 73/862.21

For making or breaking threaded connections (e.g., torque measuring wrenches):

Subject matter under subclasses 862.191+ wherein the sensing means is incorporated in or combined with a tool for tightening or loosening threaded fasteners or couplings.

SEE OR SEARCH THIS CLASS, SUBCLASS:

761, for measuring the strain of a threaded fastener.

SEE OR SEARCH CLASS

173, Tool Driving or Impacting,

176+, for power-operated tools comprising torque responsive control means.