US PATENT SUBCLASS 401 / 71-- .~.~.~ Oppositely oriented helices

US PATENT SUBCLASS 401 / 71
.~.~.~ Oppositely oriented helices

Current as of: June, 1999
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401 /	HD	COATING IMPLEMENTS WITH MATERIAL SUPPLY

49	DF	SOLID MATERIAL FOR RUBBING CONTACT OR SUPPORT THEREFOR {6}
55	DF	.~ Including means to advance material {15}
68	DF	.~.~ Screw feed {8}
71		.~.~.~ Oppositely oriented helices

DEFINITION

Classification: 401/71

(under subclass 68) Implement, provided with an additional member having a camming surface concentric with and rotatable, but axially immovable, relative to the first member, the two camming surfaces being of opposite inclination so as to converge at a point where they are in camming engagement with the cam element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

69, for an implement with screw feed means including oppositely oriented helices which are axially displaceable relative to each other during relative rotation and form part of a compound screw feed.