US PATENT SUBCLASS 248 / 406.1
.~.~.~.~.~ With rotation prevention disabler

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}
404  DF  .~.~.~ With force multiplying means {1}
405  DF  .~.~.~.~ Screw and nut {1}
406.1.~.~.~.~.~ With rotation prevention disabler {1}
406.2  DF  .~.~.~.~.~.~> Weight or load responsive

DEFINITION

Classification: 248/406.1

With relative rotation preventer and disable:

(under subclass 406.1) Structure which is provided with means to selectively lock the screw and not together to prevent, or unlock them to permit, relative rotation.