Patent ID: 8465687
Filing Date: 2013-06-18
Classification: B28B

Abstract:
1. A device for making a hollow concrete element comprising: a drum mould having a tubular mould wall, the mould wall having a first and a second end flange each with an inner periphery smaller than an inner periphery of the mould wall at each respective end; a compaction roller positionable inside the mould wall, the compaction roller having a profile that defines an interior shape of the concrete element, the compaction roller being supported by hydraulically height adjustable supporting means to independently adjust a distance of each end of the compaction roller with respect to the inner periphery of the mould wall, such that the ends of the compaction roller are positionable at differing locations between the inner periphery of the first and second flanges, respectively, and the inner periphery of the mould wall.