Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Relatively sliding wedge surfaces
Patent
1980-05-28
1982-01-26
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Relatively sliding wedge surfaces
F16B 1304
Patent
active
043126154
ABSTRACT:
A fastening unit for use in a prepared borehole includes an anchoring member and a spreader wedge. The anchoring member is formed from a single piece of metal plate and consists of an axially elongated shank part and a flange at one end of the shank part. The flange extends perpendicularly of the shank part and is bent relative to the shank part so that an arched surface is located between the two parts of the anchoring member. The flange defines an opening through which the wedge extends. The surfaces within the opening of the flange and certain axially extending surfaces of the shank part guide the wedge as it slides axially relative to the anchoring member when the fastening unit is being anchored in a borehole. The wedge guiding surfaces on the anchoring member extend into the axially extending range of the wedge guiding surfaces of the flange.
REFERENCES:
patent: 414092 (1889-10-01), Thurmond et al.
patent: 1695113 (1928-12-01), Langton et al.
patent: 2748594 (1956-06-01), Edwards
patent: 3680430 (1972-08-01), Cannon et al.
patent: 3799027 (1974-03-01), Galloway
Britts Ramon S.
Hilti Aktiengesellschaft
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