Road structure – process – or apparatus – Traffic director – Vibration inducing member
Patent
1995-08-14
1998-07-07
Lisehora, James
Road structure, process, or apparatus
Traffic director
Vibration inducing member
116 63P, 116 67R, E01F 9047
Patent
active
057758344
ABSTRACT:
A warning device adapted to be laid flat upon a road way produces an audible warning sound when contacted by the wheels of a moving vehicle. The device is comprised of a mat of flexible resilient material having an elongated configuration, and a series of semi-rigid apertured raised longitudinal bumps each with a plurality of segments therein forming a segmented metal bar contained therein and extending throughout the length of each bump. The bumps are spaced a few inches at most over a distance of two to three feet which allows resonant sound from the vibration of the bars and frictional interaction of short segments making up the bars to be transmitted to an overpassing vehicle traveling at high speeds. In addition, the segmented bars reinforce and extend the life of the mat. The warning sound, is produced when the various segments of the bars are differentially downwardly deflected by an overpassing tire thus creating an unusual audible warning essentially without the outer parts of the warning device touching each other and thereby wearing. By virtue of its specialized construction, the device can be rolled into a compact storage state which can be contained in the trunk of an automobile. A frangible metal or plastic ring is used to retain the mat device in a rolled state prior deployment. The mat is deployed by breaking the frangible part of the ring thereby allowing the mat to unfold.
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Lipson Gary N.
Lisehora James
Muckelroy William L.
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