US PATENT SUBCLASS 451 / 155
.~.~.~.~ Reciprocating spindle

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
119  DF  .~ Rotary reciprocating tool {2}
120  DF  .~.~ Cylindrical tool {2}
124  DF  .~.~.~ Rectilinear {13}
155.~.~.~.~ Reciprocating spindle {2}
156  DF  .~.~.~.~.~> Hydraulic driver
157  DF  .~.~.~.~.~> Cam and follower driver

DEFINITION

Classification: 451/155

Reciprocating spindle:

(under subclass 124) Abrading machine wherein the rotary tool is supported by a spindle which also moves in a back and forth linear motion along its axis.