US PATENT SUBCLASS 254 / 390
.~ Including rotatable, cable contacting, pulley wheel element

Current as of: June, 1999
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254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

389  DF  DEVICE OR MEMBER FOR CONTACTING AND GUIDING MOVING CABLE {2}
390.~ Including rotatable, cable contacting, pulley wheel element {9}
391  DF  .~.~> With mechanism for retarding or preventing cable movement or element rotation
392  DF  .~.~> With fluid, shock absorbing or tension restoring mechanism connected thereto
393  DF  .~.~> Plural elements or element with plural cable contacting regions {2}
405  DF  .~.~> With block for element and portion thereof repositionable for insertion or removal of cable or for exposure of element {1}
407  DF  .~.~> With means, or element structure, enabling object or obstruction on cable to bypass or travel over element
408  DF  .~.~> With block for element having stationary portion adapted to coact with element to grip cable
409  DF  .~.~> With portable block for element and hand manipulated means for removably fastening block to support or load {3}
413  DF  .~.~> With means for affixing element to support base and allowing relative movement therebetween {2}
416  DF  .~.~> With antifriction means for element

DEFINITION

Classification: 254/390

Including rotatable, cable contacting, pulley wheel element:

(under subclass 389) Cable guides wherein the portion of the device which contacts the cable includes an element having a generally circular, continuous perimeter and rotating about an axis, fixed relative to another portion of the device and passing through the center of the element, in response to the movement of the cable over its perimeter.

(1) Note. The pulley wheel element is not intended to be driven around its rotational axis by any external drive source or drive train, (e.g., motor, gear wheel, spring, etc.), nor is its rotational movement ever utilized to drive other elements of a drive train, (e.g., hand wheel and cable drives, sprocket and chain drives, etc.). The force needed to rotate it about its axis being derived solely from its contact with the shifting cable and the purpose of the rotation being to reduce the frictional resistance of the guide to the cable's movement.

(2) Note. The cable which contacts the pulley wheel element is not affixed or attached to the element in any manner.

SEE OR SEARCH CLASS

248, Supports,

331, for a vertically adjustable support suspended from a cord having a counter-weight attached thereto; and subclass 332 for a pulley bracket for guiding a cord from which a vertically adjustable support is suspended.