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:
Sep. 29, 1987
Filed:
Mar. 20, 1984
Asahi Mochizuki, Yokohama, JP;
Kira Ozawa, Mie, JP;
Shinichiro Fujita, Tokyo, JP;
Kuniaki Yamada, Tokyo, JP;
Shinko Electric Co. Ltd., Tokyo, JP;
Japanese National Railways, Tokyo, JP;
Abstract
There is disclosed a system for detecting a flat portion of a peripheral surface of a vehicle wheel disposed in rolling engagement with a track rail. A detecting device is provided for detecting one of acceleration representative of vibration of the wheel, stress developing in a support member connected to the wheel, and a noise produced by the rolling of the wheel on the rail to produce a first detection signal in response to a predetermined angular movement of the wheel. A device is provided for determining whether the first detection signal is above a predetermined reference level to produce a second detection signal in synchronism with the rotation of the wheel and indicative of a wheel flat portion of above a predetermined length.