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 (518 Ballarat Road, Sunshine, Victoria 3020, AU)
Italiano, Giuseppe (280 Thompsons Road, Maude, Victoria 3331, AU)
Fry, David Andrew (2 Condah Court, Ashwood, Victoria 3147, AU)
Boykett, Richard Kenneth (25 Rothesay Avenue, East Malvern, Victoria 3145, AU)
Darbyshire, Paul (13 Howell Street, Bentleigh, Victoria 3204, AU)
Ryan, Christopher Thomas (27 Albert Street, Brunswick East, Victoria 3057, AU)
Italiano, Giuseppe (280 Thompsons Road, Maude, Victoria 3331, AU)
Fry, David Andrew (2 Condah Court, Ashwood, Victoria 3147, AU)
Boykett, Richard Kenneth (25 Rothesay Avenue, East Malvern, Victoria 3145, AU)
Darbyshire, Paul (13 Howell Street, Bentleigh, Victoria 3204, AU)
Ryan, Christopher Thomas (27 Albert Street, Brunswick East, Victoria 3057, AU)
Application Number:
PCT/AU2005/000673
Publication Date:
November 17, 2005
Filing Date:
May 11, 2005
Export Citation:
Assignee:
THE AUSTRALIAN STEEL COMPANY (OPERATIONS) PTY LTD (650 Lorimer Street, Port Melbourne, Victoria 3207, AU)
O'grady, James Francis (518 Ballarat Road, Sunshine, Victoria 3020, AU)
Italiano, Giuseppe (280 Thompsons Road, Maude, Victoria 3331, AU)
Fry, David Andrew (2 Condah Court, Ashwood, Victoria 3147, AU)
Boykett, Richard Kenneth (25 Rothesay Avenue, East Malvern, Victoria 3145, AU)
Darbyshire, Paul (13 Howell Street, Bentleigh, Victoria 3204, AU)
Ryan, Christopher Thomas (27 Albert Street, Brunswick East, Victoria 3057, AU)
O'grady, James Francis (518 Ballarat Road, Sunshine, Victoria 3020, AU)
Italiano, Giuseppe (280 Thompsons Road, Maude, Victoria 3331, AU)
Fry, David Andrew (2 Condah Court, Ashwood, Victoria 3147, AU)
Boykett, Richard Kenneth (25 Rothesay Avenue, East Malvern, Victoria 3145, AU)
Darbyshire, Paul (13 Howell Street, Bentleigh, Victoria 3204, AU)
Ryan, Christopher Thomas (27 Albert Street, Brunswick East, Victoria 3057, 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; E04C2/00; E04C2/04; E04B1/16; E04B5/38; E02D27/02; B28B7/22; B28B7/24; B28B17/00
Attorney, Agent or Firm:
FREEHILLS PATENT & TRADE MARK ATTORNEYS (101 Collins Street, Melbourne, Victoria 3000, AU)