US PATENT SUBCLASS 411 / 379
.~ Stay bolt

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

378  DF  EXTERNALLY THREADED FASTENER ELEMENT, E.G., BOLT, SCREW, ETC. {16}
379.~ Stay bolt {2}
380  DF  .~.~> Having spherical head {1}
382  DF  .~.~> Having telltale bore

DEFINITION

Classification: 411/379

Stay bolt:

(under subclass 378) Subject matter wherein the fastening means comprises an elongated structure designed to have one end attached to a plate or wall structure with the opposite end attached to and reenforcing a second plate or wall structure.

(1) Note. The bolts of this subclass are generally used to reenforce sheets in boiler structures.

SEE OR SEARCH THIS CLASS, SUBCLASS:

505, for an unthreaded stay bolt which has a plastically flowed or deflectable end.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers,

496, for combinations of stay bolts with boiler structure.