US PATENT SUBCLASS 400 / 317
.~.~ Including power drive (e.g., electric, spring, etc.)

Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

283  DF  CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM {11}
313  DF  .~ Carriage-return mechanism {5}
317.~.~ Including power drive (e.g., electric, spring, etc.) {3}
317.1  DF  .~.~.~> For bidirectional drive
317.2  DF  .~.~.~> By spring-driven motor
317.3  DF  .~.~.~> Powered via engagement of a clutch

DEFINITION

Classification: 400/317

Including power drive (e.g., electric, spring, etc.):

(under subclass 313) Subject matter wherein the carriage* is returned by way of energy applied to the mechanism other than energy supplied by the typist at the time of carriage return.