US PATENT SUBCLASS 60 / 473
.~ Pump means moves motive fluid from one chamber to an opposite chamber of opposed expansible chambers having a common output

Current as of: June, 1999
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60 /   HD   POWER PLANTS

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
473.~ Pump means moves motive fluid from one chamber to an opposite chamber of opposed expansible chambers having a common output {3}
474  DF  .~.~> Valve or restriction controls gravity or spring return of output
475  DF  .~.~> With means compensating for charge leakage or volume difference between discharging and receiving chambers
476  DF  .~.~> Reversible delivery from pump means

DEFINITION

Classification: 60/473

(under subclass 325) Apparatus including a single to and fro output member driven by opposed expansible chambers and a pump for transferring motive fluid from one chamber to the other, to drive the output.

SEE OR SEARCH THIS CLASS, SUBCLASS:

369, for a reciprocating output driven in a repeating cycle by opposed expansible chambers.