US PATENT SUBCLASS 405 / 259.4
.~.~ Bolt having wedge expander

Current as of: June, 1999
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405 /   HD   HYDRAULIC AND EARTH ENGINEERING

258  DF  EARTH TREATMENT OR CONTROL {5}
259.1  DF  .~ Rock or earth bolt or anchor {5}
259.4.~.~ Bolt having wedge expander

DEFINITION

Classification: 405/259.4

Bolt having wedge expander:

(under subclass 259.1) Subject matter comprising a split shank for accommodating a wedge to expand the shank portion as the bolt is driven into a hole in an earthen formation.