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:
Aug. 15, 2023
Filed:
Nov. 19, 2020
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Takuya Ogishima, Izu Shizuoka, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
A cart power supply device includes a power supply resonance circuit, a notification element, a current detection circuit, and a control circuit. The power supply resonance circuit includes a power supply coil that can be electromagnetically coupled to a power reception coil mounted on a shopping cart or the like. The current detection circuit detects a current flowing through the power supply resonance circuit. The control circuit supplies an alternating current to the power supply resonance circuit at a first level and operates the notification element in a first mode when the detected current is less than a first threshold. The control circuit supplies the alternating current at a second level when the detected current is greater than the first threshold and operates the notification element in a second mode.