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公开(公告)号：US20090178365A1
公开(公告)日：2009-07-16
申请号：US12408502
申请日：2009-03-20
摘要： A precast concrete meter pit consisting of an elongated hollow pipe having a beveled support ledge at one end and notches at the opposite end is fabricated by utilizing a slip form packerhead apparatus in which the beveled support ledge is formed by a radially inwardly inclined trowel edge bearing against a pallet member which is caused to vibrate when concrete is injected into the slip form apparatus.
摘要翻译： 一个预制混凝土仪表坑由一个细长的中空管组成，该中空管在一端具有一个倾斜的支撑凸缘，在另一端具有凹口，通过使用一种滑动式打包头装置来制造，其中斜面支撑凸缘由径向向内倾斜的t刀边缘轴承 抵靠当混凝土注入到滑动装置中时使其振动的托盘构件。
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公开(公告)号：US20090084793A1
公开(公告)日：2009-04-02
申请号：US12288172
申请日：2008-10-17
摘要： A precast concrete meter pit consisting of a plurality of precast concrete hollow elongated cylindrical wall sections in end to end relation to one another is fabricated by utilizing a slip form packerhead apparatus in which the wall sections are formed with an annular slip ring when concrete is injected into the slip form apparatus.
摘要翻译： 通过使用滑动打包装置制造由多个预制混凝土中空细长圆柱形壁部分组成的预制混凝土仪表坑，其中当注入混凝土时，壁部形成有环形滑环 进入打滑装置。
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公开(公告)号：US08282869B2
公开(公告)日：2012-10-09
申请号：US12288172
申请日：2008-10-17
摘要： A precast concrete meter pit consisting of a plurality of precast concrete hollow elongated cylindrical wall sections in end to end relation to one another is fabricated by utilizing a slip form packerhead apparatus in which the wall sections are formed with an annular slip ring when concrete is injected into the slip form apparatus.
摘要翻译： 通过使用滑动打包装置制造由多个预制混凝土中空细长圆柱形壁部分组成的预制混凝土仪表坑，其中当注入混凝土时，壁部形成有环形滑环 进入打滑装置。
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