US PATENT SUBCLASS 173 / 59
.~ By motive fluid for drive motor or advance causing or controlling motor

Current as of: June, 1999
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173 /   HD   TOOL DRIVING OR IMPACTING

197  DF  WORK CLEANSING {10}
59.~ By motive fluid for drive motor or advance causing or controlling motor {7}
60  DF  .~.~> Motive fluid does not contact work but induces flow of another fluid
61  DF  .~.~> Additional cleansing fluid source {2}
64  DF  .~.~> Supply for cleansing bypasses motor chamber {1}
66  DF  .~.~> Fluid supplied through working chamber of idled cyclically operable drive motor {1}
71  DF  .~.~> With means to inhibit return of detritus into cleansing passage
72  DF  .~.~> Fluid supplied through chamber of advance causing or controlling motor
73  DF  .~.~> Directed into passage in tool

DEFINITION

Classification: 173/59

(under subclass 57) Apparatus in which the cleansing is performed by fluid derived from a motive fluid stream supplied to or exhausted from a drive motor or an advance causing or controlling motor.

(1) Note. The motive fluid supply to or fluid exhaust from any type motor is included under this definition, including fluid exhaust from an internal combustion motor, which may utilize solid fuel for an energy supply, but exhausts a fluid.