US PATENT SUBCLASS 187 / 359
.~ Includes movable contact component on support for engaging shaft structure

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.~ Includes movable contact component on support for engaging shaft structure {4}
360  DF  .~.~> Interlocking only with structure of landings or terminus of shaft
361  DF  .~.~> Actuated by change in suspension or counterweight cable tension {4}
373  DF  .~.~> Actuated by load support speed governor or sensor {2}
377  DF  .~.~> Actuated by human operator {2}

DEFINITION

Classification: 187/359

Includes movable contact component on support for engaging shaft structure:

(under subclass 351) Retaining, halting, or retarding means which is carried by the load-underlying support surface and has at least one relatively moving connected part which in one of its positions forcefully engages fixed structure located along or forming a portion of the shaft* to retain, halt, or retard the travel of the support surface and in another of its positions allows free movement of the support surface past or along the fixed structure.

SEE OR SEARCH CLASS

188, Brakes,

41+, for a brake applied to the traction rail of a railroad.