US PATENT SUBCLASS 249 / 150
.~.~.~ Inherently resilient core frictionally retained in position by its expansive or contractive force

Current as of: June, 1999
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249 /   HD   STATIC MOLDS

117  DF  CONTAINER-TYPE MOLDING DEVICE {14}
142  DF  .~ And an inner removable core to form recess or opening {2}
144  DF  .~.~ Having inner and outer shells forming conduit-type product, receptacle-type product, or module {5}
150.~.~.~ Inherently resilient core frictionally retained in position by its expansive or contractive force

DEFINITION

Classification: 249/150

(under subclass 144) Apparatus wherein the expansive or contractive nature of the core retains it frictionally in engagement with the other mold part.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings,

345, for a packed pipe joint providing frictional retention of a male element upon coupling; see the search notes thereunder.