(under subclass 1) Subject matter including means for directly applying force to a material in order to move the material toward or into the mixing chamber, and the corresponding methods.
(1) Note. This subclass does not include those methods and devices in which material is permitted to enter the mixing chamber solely under the influence of gravity.
(2) Note. The material to which the force is applied may be any one of the components of the mixture and may be liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41, for a gravity type charge hopper or chute.
76.3, for a screw conveyor for feeding material into a rubber or heavy plastic working apparatus.
