US PATENT SUBCLASS 74 / 819
.~.~.~ Held by torque

Current as of: June, 1999
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74 /   HD   MACHINE ELEMENT OR MECHANISM

813 R  DF  ROTARY MEMBER OR SHAFT INDEXING, E.G., TOOL OR WORK TURRET {8}
816  DF  .~ Preselected indexed position {1}
817  DF  .~.~ Sequential {5}
819.~.~.~ Held by torque

DEFINITION

Classification: 74/819

(under subclass 817) Devices having means to generate a rotating force to provide the angular repositioning of the shaft or load and using all or part of that force to hold the body against a position stop.

(1) Note. This is usually accomplished by means of allowing the motor to stall without deenergization.

SEE OR SEARCH CLASS

318, Electricity: Motive Power Systems,

436, for nonrunning energized electric motors.