公开(公告)号：US5464152A

公开(公告)日：1995-11-07

申请号：US179144

申请日：1994-01-07

申请人： Benjamin Wabnitz

发明人： Benjamin Wabnitz

IPC分类号： E01B1/00 ,  E01B5/08 ,  E01B9/62 ,  E01B19/00 ,  E01B21/00

CPC分类号： E01B19/006 ,  E01B1/002 ,  E01B21/00 ,  E01B5/08 ,  E01B9/62 ,  E01B2204/11

摘要： A precast concrete grade crossing includes a plurality of base members, each of which has a central recess formed in the upper surface thereof. A pair of rails are each encased by a rubber boot which extends through the crossing in a single continuous piece. The boot-encased members are received in the recess which includes a shoulder along the outer side of each rail. The shoulder bears against a lip of the boot which extends upwardly to along outer side of the head of the rail to prevent moisture from entering the space between the boot and the rail below the shoulder.

摘要翻译： 预制混凝土级交叉部包括多个基部构件，每个基部构件在其上表面中形成有中心凹部。 一对轨道每个都被橡胶护套包围，橡胶护罩以单个连续件延伸穿过交叉口。 靴子包装​​的构件被容纳在包括沿着每个轨道的外侧的肩部的凹部中。 肩部抵靠着护罩的唇缘，其向上延伸到轨道的头部的外侧，以防止水分进入靴子和在肩部下方的轨道之间的空间。