Static molds – Core – Including means for attaching core to a support
Patent
1991-03-11
1992-10-20
Woo, Jay H.
Static molds
Core
Including means for attaching core to a support
249 39, 249152, 249157, 249178, 249184, B28B 730
Patent
active
051567555
ABSTRACT:
An apparatus for forming voids in concrete including baseplates secured to a wood supporting deck or form for a concrete floor by a plurality of short wood screws. An adjustable sleeve assembly is attached to each baseplate and is adjustable to a height generally equal to the thickness of the floor with the upper end of the sleeve being accessible and observable when concrete is poured. After the baseplates have been secured in place, various subsequent work procedures may be carried out without the workers encountering obstructions that would exist if upwardly projecting cavity forming members where attached to the wood deck and the sleeve assemblies are mounted prior to pouring the concrete. After the concrete has been poured and set, the sleeve assemblies and the baseplates are removed by unscrewing the sleeve assemblies, removing an upper sleeve and pulling a lower sleeve and baseplate up from the wood deck.
REFERENCES:
patent: 2234784 (1941-03-01), Stolz
patent: 2684518 (1954-07-01), Whitlock
patent: 2728126 (1955-12-01), Whitlock
patent: 3328055 (1967-06-01), Lang
patent: 3921953 (1975-11-01), Diener
patent: 4018416 (1977-04-01), Diener
patent: 4365784 (1982-12-01), De Stasio
Matney, Jr. William J.
Woo Jay H.
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