US PATENT SUBCLASS 411 / 427
INTERNALLY THREADED FASTENER ELEMENT, E.G., NUT, ETC.

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

427INTERNALLY THREADED FASTENER ELEMENT, E.G., NUT, ETC. {5}
428  DF  .~> Including lubricating means
429  DF  .~> Having cap {2}
432  DF  .~> Multipart {1}
435  DF  .~> Wing
436  DF  .~> Thread structure {2}

DEFINITION

Classification: 411/427

INTERNALLY THREADED FASTENER ELEMENT, E.G., NUT, ETC.:

(under the class definition) Subject matter drawn to a fastening means provided with an internal helical ridge.

SEE OR SEARCH THIS CLASS, SUBCLASS:

527, for resilient sheet metal fastener securing elements having helically inclined tongues, e.g., speed nuts, etc., which act as an internally threaded fastener but wherein the ridge does not trace a complete helix.

SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits,

96, for internally threaded pipe and tube end protectors.

285, Pipe Joints or Couplings,

386+, for a coupling comprising a screw thimble holding means; and subclasses 390+ for internally threaded sleeves. 470, Threaded, Headed Fastener, or Washer Making: Process and Apparatus,

18+, for process of making internally threaded fastener elements (e.g., nuts, etc.).