US PATENT SUBCLASS 285 / 334.2
.~.~.~ Double-tapered internal sleeve

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

328  DF  PARTICULAR INTERFACE {4}
332  DF  .~ Tapered {6}
334.1  DF  .~.~ Adapter seat {2}
334.2.~.~.~ Double-tapered internal sleeve

DEFINITION

Classification: 285/334.2

(under subclass 334.1) Devices wherein the separate element is a short nipple which has each end tapered to mate with a taper in each of the members.