公开(公告)号：US20170152644A1

公开(公告)日：2017-06-01

申请号：US15364368

申请日：2016-11-30

申请人： Fleet Glass Services, Inc.

发明人： Timothy David Nickodemus

IPC分类号： E02F9/16 ,  B32B27/36 ,  B32B27/08 ,  B32B7/12 ,  B32B3/28

CPC分类号： E02F9/163 ,  B32B3/08 ,  B32B3/28 ,  B32B7/08 ,  B32B7/12 ,  B32B7/14 ,  B32B27/08 ,  B32B27/365 ,  B32B2250/02 ,  B32B2250/04 ,  B32B2250/244 ,  B32B2307/412 ,  B32B2307/50 ,  B32B2307/51 ,  B32B2307/71 ,  B32B2307/7242 ,  B32B2307/7265 ,  B32B2307/732 ,  B32B2307/748 ,  B32B2307/756 ,  B32B2571/00 ,  B32B2605/006 ,  F41H5/023 ,  F41H5/0407 ,  F41H5/263

摘要： Protective shields configured to prevent projection against projectiles, such as during excavating and/or mining operations, are provided. The protective shields include a base layer comprising one or more transparent polycarbonate layers, a sacrificial polycarbonate layer comprising a transparent polycarbonate, and an air gap positioned directly between at least a portion of the base layer and the sacrificial polycarbonate layer. The sacrificial polycarbonate layer is directly or indirectly attached to the base layer in a manner to provide the air gap positioned between the base layer and the sacrificial polycarbonate layer.