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:
Feb. 02, 2021
Filed:
Jan. 25, 2017
Samsung Electronics Co., Ltd, Suwon-si, KR;
Seon Gu Lee, Yongin-si, KR;
Gi Hyeong Lee, Suwon-si, KR;
Jae Shik Jeong, Suwon-si, KR;
Yoon Kyunh Cho, Suwon-si, KR;
Ah Young Lee, Hwaseong-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A vacuum cleaner includes a fan motor configured to generate suction, an input button configured to receive an input of a user, a first power supply circuit configured to convert alternating current (AC) power supplied from an external power source and output first direct current (DC) power, a second power supply circuit configured to store electric energy upon receiving the first DC power, and output second DC power based on the stored electric energy, a driver circuit configured to drive the fan motor upon receiving at least one of the first DC power and the second DC power, a first semiconductor switching circuit configured to control the first DC power supplied to the second power supply circuit, a second semiconductor switching circuit configured to control the first DC power and the second DC power that are supplied to the driver circuit, and a microprocessor configured to output a control signal for turning on or off the first semiconductor switching circuit and the second semiconductor switching circuit depending on the user input and a connection state of the external power source.