US PATENT SUBCLASS 220 / 235
.~.~.~ Screw actuated

Current as of: June, 1999
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220 /   HD   RECEPTACLES

200  DF  CLOSURES {45}
233  DF  .~ Externally adjustable plug or gasket {2}
234  DF  .~.~ Closure carried gasket and expander means {2}
235.~.~.~ Screw actuated {2}
236  DF  .~.~.~.~> With retainer
237  DF  .~.~.~.~> With wedging expander

DEFINITION

Classification: 220/235

(under subclass 234) Device wherein a threaded element is employed to effect the coaction between the deformable means and the expander member.