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:
Dec. 28, 2021
Filed:
Oct. 31, 2018
Koki Holdings Co., Ltd., Tokyo, JP;
Takuya Yoshinari, Ibaraki, JP;
Yuji Kishima, Ibaraki, JP;
Koki Holdings Co., Ltd., Tokyo, JP;
Abstract
Provided is a DC power supply device If an electrical tool () of a rated voltage of 36 V is connected to the DC power supply device () (if the voltage of a lower positive terminal indicates the presence of a short bar), a microcomputer () performs control so as to switch a switching element (Q) on and output a DC voltage of 36 V between an upper positive terminal and the upper negative terminal. If an electrical tool () of a rated voltage of 18 V is connected to the DC power supply device () (if the voltage of the lower positive terminal indicates the absence of a short bar), the microcomputer () performs control so as to switch a switching element (Q) on and output a DC voltage of 18 V between the upper positive terminal and the upper negative terminal.