US PATENT SUBCLASS 212 / 275
.~.~ By cyclic control of trolley acceleration or deceleration

Current as of: June, 1999
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212 /   HD   TRAVERSING HOISTS

272  DF  HAVING MEANS TO PREVENT OR DAMPEN LOAD OSCILLATIONS {1}
273  DF  .~ Antisway (i.e., horizontal movements) {2}
275.~.~ By cyclic control of trolley acceleration or deceleration

DEFINITION

Classification: 212/275

By cyclic control of trolley acceleration or deceleration:

(under subclass 273) Subject matter including a load depending from a trolley with a traveling velocity and means to control the velocity of the trolley to reduce load oscillations.

SEE OR SEARCH THIS CLASS, SUBCLASS:

98, and 286, for cyclic movements of the trolley which include raising and lowering the load automatically.