US PATENT SUBCLASS 187 / 378
.~.~.~ And interlocking with complementary stationary formation

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}
377  DF  .~.~ Actuated by human operator {2}
378.~.~.~ And interlocking with complementary stationary formation

DEFINITION

Classification: 187/378

And interlocking with complementary stationary formation:

(under subclass 377) Retaining, halting, or retarding means wherein the relatively movable engaging part engages a corresponding surface configuration on fixed structure located along or forming a portion of the shaft* to retain, halt, or retard the load-underlying surface.