发明名称 |
A REUSABLE INWARDLY COLLAPSIBLE VOID FORMER |
摘要 |
A re-useable void former for forming voids in concrete structures adapted to be positioned in wet concrete being of a flexible and elastic material to allow the void former to pucker inwardly when unsupported; a retainer adapted to support and maintain the outer shape as the concrete sets; a remover adapted to engage the void former on withdrawing the retainer wherein the unsupported void former is able to pucker and be pulled from the void thus formed for reuse. A method of use of the invention. |
申请公布号 |
WO2014032115(A1) |
申请公布日期 |
2014.03.06 |
申请号 |
WO2013AU00980 |
申请日期 |
2013.08.30 |
申请人 |
OBELIX HOLDINGS PTY LTD |
发明人 |
COMERFORD, ERNEST, FREDERICK;RANKIN, MARK, ANDREW;TAYLOR, JAMIE |
分类号 |
E04G15/04;B28B7/00;B28B7/30;B66F19/02 |
主分类号 |
E04G15/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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