US PATENT SUBCLASS 91 / 338
.~.~ Positive hold (e.g., tripped type)


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

218  DF  CYCLICALLY OPERABLE {34}
337  DF  .~ With means independent of distributor reversing parts to cyclically hold distributor {1}
338.~.~ Positive hold (e.g., tripped type)


DEFINITION

Classification: 91/338

(under subclass 337) Apparatus in which the holding means is adapted to positively hold the distributor regardless of the degree of force applied by the distributor, it being necessary to remove the holding means by a means movable relative to the distributor before distributor reversal may occur.

SEE OR SEARCH THIS CLASS, SUBCLASS:

254, for cyclically operable motors having plural movable fluid control elements to provide timing cutoff adjustment relative to admission in which the fluid control elements include a biased cutoff with an adjustable trip.

269, for cyclically operable motors having relatively movable inlet and exhaust valves at least one of which is biased with a trip means.

SEE OR SEARCH CLASS

73, Measuring and Testing,

251, for expansible chamber type volume or rate of flow meters having trip type valve gear.