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:
Nov. 03, 2020
Filed:
Sep. 09, 2019
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Youngbeom Kim, Gyeonggi-do, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Abstract
A passive radiator vibration speaker having a phase reversal structure can include a driving unit configured to generate a driving force, a diaphragm f disposed on an upper side of the driving unit to reproduce a first sound of a sound band of a specific range by being vibrated by the driving unit, a passive radiator disposed above the diaphragm in a state of being spaced apart from the diaphragm by a determined distance to reproduce a second sound of a relatively lower sound band than that of the diaphragm through vibration, and a phase reversal unit having one side being in contact with a lower surface of the diaphragm to reverse a phase of a part of the vibration of the diaphragm so as to transmit a phase-reversed vibration to the passive radiator, where the phase-reversed vibration is in a reversed phase to the vibration of the diaphragm.