US PATENT SUBCLASS 187 / 372
.~.~.~.~ Having wedge shape or sliding along incline

Current as of: June, 1999
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187 /   HD   ELEVATOR, INDUSTRIAL LIFT TRUCK, OR STATIONARY LIFT FOR VEHICLE

351  DF  HAVING SPECIFIC MEANS CONTACTING OR ON LOAD SUPPORT FOR STOPPING OR SLOWING THEREOF {4}
359  DF  .~ Includes movable contact component on support for engaging shaft structure {4}
361  DF  .~.~ Actuated by change in suspension or counterweight cable tension {4}
371  DF  .~.~.~ Slidably mounted contact component {1}
372.~.~.~.~ Having wedge shape or sliding along incline

DEFINITION

Classification: 187/372

Having wedge shape or sliding along incline:

(under subclass 371) Retaining, halting, or retarding means in which either (a) the moving engaging part has a tapered contour or (b) the cooperating formations restricting its movement to a primary direction are at an acute or an obtuse angle to the fixed structure located along the shaft*, and the engaging part and cooperating formation are positioned relative to each other in such a manner that the part will increase the engaging force applied against the fixed structure when moved along the formation in one direction.