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1. (WO2018129208) SNOW AND ICE MITIGATING TRAFFIC LIGHT LENSES AND LENS COVERS

Pub. No.:    WO/2018/129208    International Application No.:    PCT/US2018/012416
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Fri Jan 05 00:59:59 CET 2018
IPC: G08G 1/095
Applicants: REGENTS OF THE UNIVERSITY OF COLORADO
Inventors: RORRER, Ronald, A.
HANZON, Drew, W.
MERTZ, Alexander, M.
LOPP, Megan
Title: SNOW AND ICE MITIGATING TRAFFIC LIGHT LENSES AND LENS COVERS
Abstract:
Lenses and lens covers are shaped to smoothly funnel air along traffic light lenses in a substantially laminar flow. They include one or more concave surfaces and minimize stagnation and recirculation zones in the snow or ice laden air either out of the visor or away from the lens. Some versions include two concave surfaces which meet at a center split line and sweep backwards. The concave surfaces turn the incoming air flow slowly compared to the convex lens surfaces currently in use.