US PATENT SUBCLASS 248 / 414
.~.~.~ Constant friction brake

Current as of: June, 1999
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248 /   HD   SUPPORTS

127  DF  STAND {14}
158  DF  .~ Standard type {4}
161  DF  .~.~ Adjustable vertically {6}
414.~.~.~ Constant friction brake

DEFINITION

Classification: 248/414

(under subclass 161) Device wherein one of the vertically movable parts carries a member which slidably bears or rubs on the other part with a force sufficient to prevent accidental movement of the parts, but insufficient to prevent intentional movement.