公开(公告)号：US5474016A

公开(公告)日：1995-12-12

申请号：US251300

申请日：1994-05-31

申请人： William J. Haney

发明人： William J. Haney

IPC分类号： E01F9/011 ,  E01F13/00 ,  E01F9/00

CPC分类号： E01F13/00 ,  E01F9/696

摘要： An overhead clearance warning includes an over the road horizontal member with several spaced apart depending chains carrying cylinders. The cylinders are preferably hollow plastic or aluminum and are provided with reflective stripes. The chains and cylinders are arranged so that the distance from the road surface to the bottoms of the cylinders is substantially the same as or slightly less than the overhead clearance of which the system is warning. When a vehicle which is taller than the overhead clearance approaches the warning system, the reflective stripes on the cylinders provide a visual warning of the low clearance condition. If the visual warning is ignored, the tall vehicle will strike the hollow cylinders and a relatively loud audible warning will result without damaging the vehicle. The preferred embodiment of the invention provides both alphanumeric and iconic warning signs which are mounted at locations where they are easy to see, are protected from elements and vandalism, and require little or no maintenance. The invention may be mounted on existing roadside lamp posts or may be mounted on its own post or posts. Several different embodiments of mounting the system are disclosed. In one embodiment, the warning system is mounted for rotation about a vertical post and includes frangible links to prevent serious damage to a tall vehicle which strikes the warning device. In another embodiment, the system is mounted on a wall over a garage or tunnel entrance as a fail safe final warning.

摘要翻译： 架空间隙警告包括在道路水平构件上方，具有多个间隔开的承载气缸的悬挂链。 圆柱体优选为中空塑料或铝，并且设置有反射条纹。 链条和气缸被布置成使得从气路的路面到底部的距离基本上与系统警告的架空间隙相同或略小。 当高于顶部间隙的车辆接近警告系统时，气缸上的反射条纹提供了低间隙条件的视觉警告。 如果视觉警告被忽略，高大的车辆将撞击中空的圆柱体，并且会产生相对较大的可听见的警告而不损坏车辆。 本发明的优选实施例提供了安装在容易看到的位置的字母数字和标志性警告标志，其被保护免受元件和破坏，并且需要很少或不需要维护。 本发明可以安装在现有的路边灯柱上，或者可以安装在其自己的柱或柱上。 公开了安装系统的几个不同实施例。 在一个实施例中，安装警告系统以围绕垂直柱旋转，并且包括易碎连杆，以防止严重损坏撞击警告装置的高车辆。 在另一个实施例中，系统安装在车库或隧道入口上的墙上，作为故障安全最终警告。