US PATENT SUBCLASS 91 / 334
.~.~.~ To reverse direction of rotation of interposed shaft

Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

218  DF  CYCLICALLY OPERABLE {34}
330  DF  .~ With independently operable means to move or means to adjust movement of distributor {1}
331  DF  .~.~ Means adjusts motion transmission from working member to distributor {3}
334.~.~.~ To reverse direction of rotation of interposed shaft

DEFINITION

Classification: 91/334

(under subclass 331) Apparatus in which the manipulation or adjustment of the mechanical means results in causing a shaft forming part of the mechanical means (generally the output shaft of the motor) to change direction of continuous unidirectional rotation.