Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1980-05-21
1982-05-18
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 57, F16B 1306
Patent
active
043302300
ABSTRACT:
An anchor bolt assembly insertable in a masonry hole for fastening a fixture thereto. The assembly is constituted by a threaded bolt whose lower end terminates in an expander element, the bolt extending through an expandable sleeve and being threadably received in a tube having an enlarged head engageable by a torque-producing tool. Interposed between the tube and the sleeve is a deformable ring. When the assembly is inserted through a hole in the fixture into the masonry hole with the head thereof outside the fixture, and the head is then turned by the tool, this causes the bolt to advance toward the tube and causes the expander element to force its way into the sleeve to effect expansion thereof against the wall of the masonry hole until a point is reached at which the assembly is locked in the hole and no further bolt advance is possible. Further turning of the head causes the tube to advance toward the locked sleeve to deform the ring therebetween until a point is reached where the head is tightly pressed against the face of the fixture to secure the fixture to the masonry surface and prevent displacement thereof.
REFERENCES:
patent: 1035277 (1912-08-01), Veres
patent: 3171322 (1965-03-01), Kaplan
patent: 3227031 (1966-01-01), Williams
patent: 3443474 (1969-05-01), Blakeley et al.
patent: 3750519 (1973-08-01), Lerich
patent: 3955464 (1976-05-01), Fischer
patent: 3958488 (1976-05-01), Fischer
patent: 4019420 (1977-04-01), Fischer
patent: 4195547 (1980-04-01), Giannuzzi
Britts Ramon S.
Ebert Michael
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