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:
Jun. 11, 2024
Filed:
Sep. 12, 2022
Kabushiki Kaisha Toshiba, Tokyo, JP;
Yasuhiro Kanekiyo, Yokohama Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A spark discharge detection device includes a discharge detector, a waveform extension circuit, and determination circuit. The discharge detector includes a metal electrode that detects discharge between an electrode and a sliding body that is in contact with and sliding surface of the electrode. The waveform extension circuit configured to extend a discharge waveform output from the discharge detector in a time direction. The determination circuit configured to determine that discharge has occurred in the sliding body when a signal value exceeds a first threshold and a time during which the signal value exceeds the first threshold is held for a time longer than a first time for the output of the waveform extension circuit.