US PATENT SUBCLASS 474 / 39-- .~.~ Screw actuated

US PATENT SUBCLASS 474 / 39
.~.~ Screw actuated

Current as of: June, 1999
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474 /	HD	ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS

8	DF	PULLEY WITH BELT-RECEIVING GROOVE FORMED BY DRIVE FACES ON RELATIVELY AXIALLY MOVABLE COAXIAL CONFRONTING MEMBERS (E.G., EXPANSIBLE CONE PULLEY, ETC.) {13}
37	DF	.~ By manual actuator for one or both confronting members {2}
39		.~.~ Screw actuated {3}
40	DF	.~.~.~> With additional linkage in actuator drive train
41	DF	.~.~.~> By opposite-handed screw threads engaging adjacent members
42	DF	.~.~.~> With means to positively lock members in adjusted position

DEFINITION

Classification: 474/39

Screw actuated:

(under subclass 37) Subject matter wherein the motion-inducing means comprises two relatively rotatable members having interengaged helical threads, one of such members being fixed and the other rectilinearly movable in a direction parallel to the axis of rotation so that relative rotation between the members causes such rectilinear movement, and one of said members forming a part of or being interconnected to one of said adjustable components so that said rectilineal movement causes said relative adjustment of said components. [figure]