US PATENT SUBCLASS 411 / 439
IMPACT DRIVEN FASTENER, E.G., NAIL, SPIKE, TACK, ETC.

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

439IMPACT DRIVEN FASTENER, E.G., NAIL, SPIKE, TACK, ETC. {13}
440  DF  .~> Having means to facilitate explosive driving {1}
442  DF  .~> Plural attached fasteners {3}
446  DF  .~> Including integral locking means {3}
457  DF  .~> Multiple prong, e.g., nailing plate, staple, etc. {8}
477  DF  .~> Of sheet metal {2}
480  DF  .~> Separately attached head
481  DF  .~> Head having central recess
482  DF  .~> Plural axially aligned heads
483  DF  .~> Wire formed head
484  DF  .~> Domed head
485  DF  .~> Hook head
486  DF  .~> Head forms segment of disk
487  DF  .~> Shank or penetrating end structure {5}

DEFINITION

Classification: 411/439

IMPACT DRIVEN FASTENER, E.G., NAIL, SPIKE, TACK, ETC.:

(under the class definition) Subject matter drawn to a fastener provided with an impact receiving surface adapted to receive an axially applied force which causes the fastener to penetrate material, substructure, or other work to be fastened.

SEE OR SEARCH CLASS

248, Supports,

71, for pipe or cable supports provided with penetrating means; and subclass 216.1 for specially mounted or attached brackets having piercing means.

439, Electrical Connectors,

387+, for an electrical connector including a contact with a sharp, piercing or cutting edge.