US PATENT SUBCLASS 91 / 281
.~ Working member controlled motive fluid for distributor motor

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

218  DF  CYCLICALLY OPERABLE {34}
281.~ Working member controlled motive fluid for distributor motor {12}
282  DF  .~.~> Fluid supply through diverse paths to distributor motor chamber {1}
284  DF  .~.~> Independent means to adjust distributor motor supply or exhaust passage {1}
286  DF  .~.~> Distributor or distributor motor mechanically moved cyclically to control actuating fluid for distributor motor {2}
289  DF  .~.~> Adjustable means to retard or lock distributor motor
290  DF  .~.~> Working member traverses pilot port in working chamber side wall {9}
303  DF  .~.~> Working member adapted to directly mechanically reverse distributor
304  DF  .~.~> Pilot valve controlled distributor motor (461) {9}
315  DF  .~.~> Distributor moves about an axis
316  DF  .~.~> Distributor moves laterally relative to working member reciprocatory path
317  DF  .~.~> Working member compresses fluid to reverse distributor
318  DF  .~.~> Motive fluid build-up at end of working stroke reverses distributor
319  DF  .~.~> Working member traverses pilot passage to control distributor motor {1}

DEFINITION

Classification: 91/281

(under subclass 218) Apparatus in which the working member position controls or varies the supply or exhaust of motive fluid for a motor which cyclically moves the distributor.

(1) Note. Since this definition deals with at least two fluid operated motors, the output motor and a motor operating the means controlling the distribution of motive fluid to the output motor, the titles and definitions of the indented subclass elements of the output motor will be specified as output motor elements or merely motor elements while the term "distributor" will preceed the motor elements operating the means controlling the distribution of motive fluid to the output motor.

(2) Note. A motor is included under this definition as controlling distributor motive fluid in response to position even though the distributor is reversed solely by a change in pressure in the working chamber as a result, for example, of the working member compressing fluid in the working chamber, or due to a build-up of motive fluid at the end of the stroke of the working member. Such position of reversal will normally remain constant with a consistent load and uniform motive fluid supply, but the position may change if the load or supply varies.

(3) Note. The motor which moves the distributor under this definition may be merely an integral face of the distributor which is subjected to fluid pressure to shift the distributor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

155, for a multiple expansion expansible chamber fluid motor having a fluid acutated distributor. 189+, for relatively movable working members in which one controls another.

191+, for an expansible chamber fluid motor having plural working members in which the position of each cyclically controls another, and particularly subclass 193 for a fluid actuated valve controlled by a relatively movable working member.

278, for selectively usable distributor reversal passages for a fluid operated distributor.