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公开(公告)号:US2839278A
公开(公告)日:1958-06-17
申请号:US37606453
申请日:1953-08-24
申请人: ROWE ERNEST D
发明人: ROWE ERNEST D
IPC分类号: B28B21/34
CPC分类号: B28B21/34 , Y10T74/18064
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公开(公告)号:US2703916A
公开(公告)日:1955-03-15
申请号:US19435750
申请日:1950-11-06
发明人: BUTLER ADOLF G
IPC分类号: B28B21/34
CPC分类号: B28B21/34 , Y10T403/458
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公开(公告)号:US4600373A
公开(公告)日:1986-07-15
申请号:US357196
申请日:1982-03-11
申请人: Harold V. Swanson
发明人: Harold V. Swanson
CPC分类号: B28B21/78 , B28B17/0081 , B28B21/30 , B28B21/34
摘要: A machine for fabricating sulfur concrete pipe includes a centrifuge for centrifuging a mixture of the constituents of the sulfur concrete. The centrifuge includes a port for the direction of heat therethrough for heating the mixture. The centrifuge also includes a flexible cylindrical wall which may be directed radially inwards for compacting the mixture in response to a fluid pressure exerted on a side of said flexible cylinder opposite from said mixture. Thermometers are provided for measuring the temperature of applied heat at different points within said centrifuge, and a computer is responsive to the measured temperatures for computing future values of temperature to be applied to said mixture in accordance with a predetermined relationship based on past temperature and time of centrifuging.
摘要翻译: 用于制造硫混凝土管的机器包括用于离心硫混凝土的组分的混合物的离心机。 离心机包括用于加热混合物的热通过的端口。 离心机还包括柔性圆柱形壁,其可以径向向内定向,以响应于施加在与所述混合物相对的所述柔性圆筒的一侧上的流体压力来压实混合物。 提供温度计用于测量所述离心机内不同点的加热温度,并且计算机响应于所测量的温度,以根据过去的温度和时间根据预定的关系计算要施加到所述混合物的未来温度值 的离心。
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公开(公告)号:US4247516A
公开(公告)日:1981-01-27
申请号:US126906
申请日:1980-03-03
申请人: Burton D. Morgan
发明人: Burton D. Morgan
CPC分类号: B28B21/34
摘要: A method of making a prestressed concrete pole, including placing a heat softenable plastic pipe in a metal tube or pipe and filling the space between the pipes with concrete, rotating the metal pipe-concrete assembly rapidly to center the plastic pipe therein, applying hot fluid pressure to the interior of the plastic pipe, longitudinally prestressing the concrete pipe assembly for several hours while the concrete sets, and gradually releasing the fluid pressure and prestressing pressure to obtain a prestressed concrete pole.
摘要翻译: 一种制作预应力混凝土柱的方法,包括将可热软化塑料管放置在金属管或管道中,并用混凝土填充管道之间的空间,快速旋转金属管混凝土组件,使塑料管居中,应用热流体 对塑料管内部的压力,在混凝土套管时纵向预应力混凝土管组件数小时,并逐渐释放流体压力和预应力以获得预应力混凝土柱。
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公开(公告)号:US2822598A
公开(公告)日:1958-02-11
申请号:US50695255
申请日:1955-05-09
申请人: CEN VI RO PIPE CORP
发明人: CHANLUND CARL W , HUBBARD STEPHEN R
IPC分类号: B28B21/34
CPC分类号: B28B21/34
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公开(公告)号:US1532407A
公开(公告)日:1925-04-07
申请号:US68432624
申请日:1924-01-04
发明人: HOBSON JOHN S
IPC分类号: B28B21/34
CPC分类号: B28B21/34
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公开(公告)号:US2965947A
公开(公告)日:1960-12-27
申请号:US56495756
申请日:1956-02-13
申请人: CEN VI RO PIPE CORP
发明人: HUBBARD STEPHEN R
IPC分类号: B28B21/34
CPC分类号: B28B21/34
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公开(公告)号:US2222889A
公开(公告)日:1940-11-26
申请号:US21482038
申请日:1938-06-20
申请人: REGINALD HUME WALTER
发明人: REGINALD HUME WALTER
IPC分类号: B28B21/34
CPC分类号: B28B21/34
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公开(公告)号:US2038861A
公开(公告)日:1936-04-28
申请号:US68110733
申请日:1933-07-18
申请人: JAKOB STUSSI
发明人: JAKOB STUSSI
CPC分类号: B28B21/34 , B28B21/305
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