A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A reusable inwardly collapsible void former
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.
A reusable inwardly collapsible void former
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.
A reusable inwardly collapsible void former
COMERFORD ERNEST FREDERICK (author) / RANKIN MARK ANDREW (author) / TAYLOR JAMIE (author)
2015-04-16
Patent
Electronic Resource
English
IPC:
E04G
SCAFFOLDING
,
Baugerüste
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
B66F
HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
,
Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last