US PATENT SUBCLASS 417 / 469
.~.~ Cylinder and piston reciprocate on common axis

Current as of: June, 1999
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417 /   HD   PUMPS

437  DF  EXPANSIBLE CHAMBER TYPE {40}
460  DF  .~ Moving cylinder {7}
469.~.~ Cylinder and piston reciprocate on common axis

DEFINITION

Classification: 417/469

(under subclass 460) Apparatus in which both the cylinder and the piston have an absolute rectilinear to-and-fro motion along the same fixed axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

466, for a cylinder and piston which reciprocate on a common axis with the inlet or discharge of pump fluid being controlled by cooperating ports in the cylinder and a fixed member.