US PATENT SUBCLASS 254 / 268
.~.~ Having mechanism, actuated by changes in position of drum relative to another component of device, for generating control impulse to rotation retarding means or drive

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

264  DF  APPARATUS FOR HAULING OR HOISTING LOAD, INCLUDING DRIVEN DEVICE WHICH CONTACTS AND PULLS ON CABLE {4}
266  DF  .~ Device includes rotatably driven, cable contacting drum {34}
268.~.~ Having mechanism, actuated by changes in position of drum relative to another component of device, for generating control impulse to rotation retarding means or drive

DEFINITION

Classification: 254/268

Having mechanism, actuated by changes in position of drum relative to another component of device, for generating control impulse to rotation retarding means or drive:

(under subclass 266) Apparatus wherein the driven device also includes a mechanism which is actuated by the shifting or reorientation (i.e., movement other than the normal rotation) of either the circumference or rotational axis of the drum relative to at least one other stationary portion of the device, the mechanism when actuated generates a force which is transmitted to and regulates the operation of either (a) means for retarding the rotation of (e.g., frictional brake), or (b) the drive for (e.g., motor, clutch), the drum.

SEE OR SEARCH CLASS

173, Tool Driving or Impacting,

4+, for tool-advancing means controlled by automatic control.