Road structure – process – or apparatus – Miscellaneous road structure
Reexamination Certificate
2005-12-27
2005-12-27
Will, Thomas B. (Department: 3671)
Road structure, process, or apparatus
Miscellaneous road structure
C404S077000, C404S079000
Reexamination Certificate
active
06979146
ABSTRACT:
In order to melt snow and prevent freezing without consuming energy wastefully and to monitor a road surface state remotely, a road surface sensor includes: a rotating stand provided so as to be reciprocatingly rotatable upward on the road surface; a snow-melting/freezing heat quantity measurement dummy road surface having an electric heater buried therein and to use as a reference road surface for heat quantity measurement to derive a melting heat quantity for snow falling on the surface and a heat quantity required for freezing prevention; a reference light irradiating/reflected light receiving device that is attached so as to be rotatable with the rotating stand; a space reflected light receiving device; a non-contact road temperature measuring device; a non-contact snow cover depth measuring device; a road surface image pickup device; and a moisture sensor. The reference light irradiating/reflected light receiving device includes a reference light irradiating device for irradiating reference light and a reflected light receiving device for receiving reflected light of the reference light from the road surface, and the reflected light receiving device separates and receives only reflected light of the reference light out of the reflected light from the road surface.
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Goto Makoto
Yamada Tadayuki
Yamamoto Kouji
Addie Raymond W
Japan Highway Public Corporation
Wenderoth , Lind & Ponack, L.L.P.
Will Thomas B.
Yamada Technic Corporation
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