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公开(公告)号：US10428488B2
公开(公告)日：2019-10-01
申请号：US15129257
申请日：2015-04-02
发明人： Andrew Allbright , James Canney , Prasanna Kumar , Arne Meincke
IPC分类号： E02D29/14
摘要： The invention relates to a support structure of a cover of a structure capable of being inserted into the ground, for example of a shaft or a channel, wherein the cover (10) comprises a traversable surface (11) and the support structure (20) extends downwards under said cover into the structure and comprises beam-shaped supports (21-23) such that their under support side (24) facing away from the surface (11) experiences a tensile stress when the surface (11) is loaded. The invention is further characterized in that between two areas (A, A′) a thickness (D) of the carriers with minimum tensile stress is configured substantially symmetrically in an increasing manner up to a maximum value and then, in turn, in a decreasing manner to form a ball shape when viewing the cover from below.
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公开(公告)号：US20170107682A1
公开(公告)日：2017-04-20
申请号：US15129257
申请日：2015-04-02
发明人： Andrew Allbright , James Canney , Prasanna Kumar , Arne Meincke
IPC分类号： E02D29/14
CPC分类号： E02D29/14 , E02D29/1454 , E02D2200/1628 , E02D2300/0031
摘要： The invention relates to a support structure of a cover of a structure capable of being inserted into the ground, for example of a shaft or a channel, wherein the cover (10) comprises a traversable surface (11) and the support structure (20) extends downwards under said cover into the structure and comprises beam-shaped supports (21-23) such that their under support side (24) facing away from the surface (11) experiences a tensile stress when the surface (11) is loaded. The invention is further characterized in that between two areas (A, A′) a thickness (D) of the carriers with minimum tensile stress is configured substantially symmetrically in an increasing manner up to a maximum value and then, in turn, in a decreasing manner to form a ball shape when viewing the cover from below.
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