The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2017
Filed:
Nov. 29, 2016
Korea Institute of Civil Engineering and Building Technology, Gyeonggi-do, KR;
Hyeong Yeol Kim, Gyeonggi-do, KR;
Jong Sup Park, Gyeonggi-do, KR;
KOREA INSTITUTE OF CIVIL ENGINEERING AND BUILDING TECHNOLOGY, Gyeonggi-do, KR;
Abstract
A variable traffic safety sign is useful in informing road users of the possibility of a surface of a road or bridge section being wet or frozen without using an additional external power source by exactly expressing freezing and wet roadbed conditions of the road or bridge section using a thermochromic paint and a humidity indicator paint, and also allowing road drivers to exactly recognize the roadbed conditions of the road or bridge section by displaying the freezing and wet roadbed conditions of the road or bridge section conditions in response to changes in temperature and humidity, respectively. Also, the variable traffic safety sign is readily applicable to structures such as a bridge crash barrier, a traffic safety sign board, a bridge guardrail, a road shoulder, and an inner part, entrance and exit of a tunnel.