US PATENT SUBCLASS 411 / 484
.~ Domed head

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

439  DF  IMPACT DRIVEN FASTENER, E.G., NAIL, SPIKE, TACK, ETC. {13}
484.~ Domed head

DEFINITION

Classification: 411/484

Domed head:

(under subclass 439) Subject matter wherein the impact receiving surface comprises a convexly curved surface defining substantially a segment of a sphere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

507, for domed head fastener elements (e.g., a rivet).