US PATENT SUBCLASS 285 / 328
PARTICULAR INTERFACE


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

328PARTICULAR INTERFACE {4}
329  DF  .~> Diverse metal
330  DF  .~> Interlocked or overlapped
331  DF  .~> Annular socket
332  DF  .~> Tapered {6}


DEFINITION

Classification: 285/328

(under the class definition) Subject matter wherein the free ends of the members, which constitute the joint interface, are so constructed that the particular configuration of one

requires a particular configuration in the other and/or the particular interfaces cooperate to produce some unexpected result.

SEE OR SEARCH THIS CLASS, SUBCLASS:

65+, for a duplicate end coupling (e.g., train line type).

148.19+, for diverse interfaces in serial diverse joints.

259, for a nonmetal-to-metal coupling having a particular surface means for increasing friction between the members.