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:
May. 08, 2018
Filed:
Sep. 04, 2014
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Yohei Michitsuji, Hitachi, JP;
Ryo Matsui, Hitachi, JP;
Yasuhiro Sato, Chofu, JP;
Hirotaka Mori, Chofu, JP;
Makoto Shimizu, Tokyo, JP;
Jun Kurihara, Tokyo, JP;
Tomohiro Seki, Tokyo, JP;
Hiroshi Obayashi, Tokyo, JP;
Masaaki Mizuno, Yao, JP;
Masuhisa Tanimoto, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A method of precisely measuring the track twist of a track on which a vehicle for commercial operation is travelling using this vehicle is to be provided. The method includes measuring a condition of a track (R) on which a vehicle for commercial operation () is travelling using this vehicle (). The vehicle for commercial operation includes a bogie (). The bogie includes four wheels () and primary springs () provided to correspond to the four wheels () and support the corresponding wheels (), and is capable of measuring a wheel load of each of the four wheels (). The method includes the steps of: measuring the wheel load of each wheel () (S); calculating the displacement of each primary spring () based on the measured wheel load (S); and calculating the track twist (h) of the track (R) based on the calculated displacements of the primary springs () (S).