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:
Apr. 15, 2008
Filed:
Mar. 17, 2005
Yoshihiro Ozawa, Tomisato, JP;
Katsunori Shinoda, Narita, JP;
Mitsuo Suzuki, Tokyo, JP;
Hisaaki Kawaguchi, Tokyo, JP;
Hajime Kato, Hitachi, JP;
Yoshihiro Ozawa, Tomisato, JP;
Katsunori Shinoda, Narita, JP;
Mitsuo Suzuki, Tokyo, JP;
Hisaaki Kawaguchi, Tokyo, JP;
Hajime Kato, Hitachi, JP;
Narita International Airport Corporation, Narita, JP;
Sanki Engineering Co., Ltd., Tokyo, JP;
Abstract
A road-ice detecting sensor includes: a temperature sensing member of T shape made of a highly heat conductive metal, having a temperature sensor to be grounded onto a road and a fin part erected from this temperature sensor; an optical fiber having an FBG bonded onto the fin part of the temperature sensing member; and a case having a heat insulating member surrounding the fin part of the temperature sensing member and the optical fiber. A plurality of number of the read-ice detecting sensors are installed on a road, connected to one another via an optical cable. Pulsed light is launched into one of the ends of the optical cable, and beams of reflected light from the respective road-ice detecting sensors are received to measure the road temperature.