Title:
CAVITY FORMER
Document Type and Number:
WIPO Patent Application WO/2005/108701
Kind Code:
A1
Abstract:
A cavity former (10) for forming one or more cavities in a concrete slab, includes a hollow body about which, during use of the former, poured concrete flows and subsequently cures to form a concrete slab in which the hollow body defines a cavity. A plurality of flanges (20, 21) projects from at least two sides of the body to define floors for respective channels adjacent the sides of the body. A plurality of supports (50, 51, 52 and 53) is integrated with and outstanding from the hollow body and/or flanges to support reinforcement mesh above the body and elongated slab reinforcement in the channels. Respective co-operable formations are disposed on the flanges and respective further sides of the body whereby respective pairs of the cavity formers may be located and relatively positioned together by the formations with one cavity former resting on a flange of the other, whereby to define the channels, which channels receive the poured concrete. Also disclosed is means for defining a seat in the hollow body for an object to project above the hollow body by a height that defines the top of the slab.
Inventors:
O'GRADY JAMES FRANCIS (AU)
ITALIANO GIUSEPPE (AU)
FRY DAVID ANDREW (AU)
BOYKETT RICHARD KENNETH (AU)
DARBYSHIRE PAUL (AU)
RYAN CHRISTOPHER THOMAS (AU)
ITALIANO GIUSEPPE (AU)
FRY DAVID ANDREW (AU)
BOYKETT RICHARD KENNETH (AU)
DARBYSHIRE PAUL (AU)
RYAN CHRISTOPHER THOMAS (AU)
Application Number:
PCT/AU2005/000673
Publication Date:
November 17, 2005
Filing Date:
May 11, 2005
Export Citation:
Assignee:
AUSTRALIAN STEEL CO OPERATIONS (AU)
O'GRADY JAMES FRANCIS (AU)
ITALIANO GIUSEPPE (AU)
FRY DAVID ANDREW (AU)
BOYKETT RICHARD KENNETH (AU)
DARBYSHIRE PAUL (AU)
RYAN CHRISTOPHER THOMAS (AU)
O'GRADY JAMES FRANCIS (AU)
ITALIANO GIUSEPPE (AU)
FRY DAVID ANDREW (AU)
BOYKETT RICHARD KENNETH (AU)
DARBYSHIRE PAUL (AU)
RYAN CHRISTOPHER THOMAS (AU)
International Classes:
B28B7/16; B28B7/22; B28B7/24; B28B17/00; B28B19/00; E02D27/02; E04B1/16; E04B5/36; E04B5/38; E04C1/00; E04C2/00; E04C2/04; (IPC1-7): E04C1/00; B28B7/22; B28B7/24; B28B17/00; E02D27/02; E04B1/16; E04B5/38; E04C2/00; E04C2/04
Domestic Patent References:
| WO2004027178A1 | 2004-04-01 |
Foreign References:
| EP0884427B1 | 2002-04-03 | |||
| GB2379902A | 2003-03-26 | |||
| AU6700986A | 1987-06-25 |
Attorney, Agent or Firm:
FREEHILLS PATENT & TRADE MARK ATTORNEYS (Melbourne, Victoria 3000, AU)
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