Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Patent
1980-02-08
1982-01-05
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
411 70, 254 93R, F16B 1306
Patent
active
043091385
ABSTRACT:
A sleeve is provided for snug reception through a bore in a floor slab and an elongated shank is provided for snug sliding reception through the sleeve with the opposite ends of the shank projecting outwardly from the corresponding ends of the sleeve. One end of the sleeve is provided with an enlargement thereon tapering toward the other end of the shank and the maximum diameter of the enlargement is less than the outside diameter of the sleeve. The enlargement includes a minor diameter end which may be wedgingly received within the adjacent end of the sleeve and the enlargement includes circumferentially spaced, radially outwardly tapering and longitudinally extending flutes formed thereon. The flutes are spiraled, slightly, about the enlargement and are inclined less than 30.degree. relative to the longitudinal axis of the shank. Forced structure is provided for operative connection between the shank and the sleeve to longitudinally displace of the former relative to the latter in a direction wedging the enlargement into the adjacent end of the sleeve and the force structure is operative to apply torque to the shank in response to longitudinal displacement thereof relative to the sleeve tending to rotate the shank in the same direction in which the flutes are spiraled.
REFERENCES:
patent: 4137816 (1979-02-01), Gartner
patent: 4143579 (1979-03-01), Ziaylek, Jr.
Hinson Virgil H.
Jarman Davis R.
Britts Ramon S.
Jacobson Harvey B.
O#Brien Clarence A.
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