US PATENT SUBCLASS 91 / 248
.~.~ Electrical adjustment


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

218  DF  CYCLICALLY OPERABLE {34}
247  DF  .~ Timing control by relative adjustment of plural movable fluid control elements {3}
248.~.~ Electrical adjustment


DEFINITION

Classification: 91/248

(under subclass 247) Apparatus in which electrically operated means are provided to move or control the movement of a fluid control element, and adjustable electrical control means are provided to vary the operation of the electrically operated means so as to vary the timing of a fluid control event.

SEE OR SEARCH THIS CLASS, SUBCLASS:

42, for expansible chamber motors having correlated control of motive fluid and working member locking means in which the correlated control is accomplished by electrical control means.

275, for cyclically operable expansible chamber motors having electrically actuated distributors, other than those which involve adjustable timing control of fluid control events as defined under subclass 247.

459, for expansible chamber motors, other than those which are cyclically operable, which include electrically operated valves.