专利名称：Improvements in or relating to the
production of concrete pipes
发明人：Hodgkinson, Philip Jeffrey,Hinch, Edmund
Thomas
申请号：EP85301608.7申请日：19850308公开号：EP0157506A1公开日：19851009
专利附图：
摘要：The invention provides a method of manufacturing a concrete pipe or tubecomprising the steps of forming a mould from flexible material, introducing concrete intothe mould so as to form a concrete pipe or tube therein, and introducing a fluid underpressure between the flexible mould and the concrete pipe or tube such as to expandthe flexible mould from the pipe or tube and then withdrawing the pipe ortube fromwithin the mould.
申请人：Stanton PLC
地址：Stanton-by-Dale Ilkeston Derbyshire GB
国籍：GB
代理机构：Heath, Peter William Murray
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