US PATENT SUBCLASS 417 / 400
.~.~.~.~ Interconnected moving cylinder and piston

Current as of: June, 1999
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417 /   HD   PUMPS

321  DF  MOTOR DRIVEN {32}
375  DF  .~ Fluid motor {9}
398  DF  .~.~ Rectilinearly reciprocating cylinder and piston-type motor {1}
399  DF  .~.~.~ Rectilinearly reciprocating cylinder and piston-type pump {2}
400.~.~.~.~ Interconnected moving cylinder and piston

DEFINITION

Classification: 417/400

(under subclass 399) Apparatus in which (1) the motor piston is the movable motor working member and is drivingly connected to the pump cylinder which is the movable pumping member, or (2) the motor cylinder is the movable motor working member and is drivingly connected to the pump piston which is the movable pumping member.