US PATENT SUBCLASS 241 / 273
.~.~.~.~ Gravity projected surface only

Current as of: June, 1999
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241 /   HD   SOLID MATERIAL COMMINUTION OR DISINTEGRATION

*  DD  APPARATUS {41}
198.1  DF  .~ Cooperating comminuting surfaces (e.g., jaw crusher) {5}
262  DF  .~.~ Reciprocating surface or surfaces {3}
270  DF  .~.~.~ Vertical rectilinear movement (e.g., stamp mills) {3}
273.~.~.~.~ Gravity projected surface only

DEFINITION

Classification: 241/273

(under subclass 270) Devices in which the vertically reciprocating surface is projected toward the cooperating surface solely by the force of gravity on the comminuting stroke.