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:
Sep. 16, 2014
Filed:
Jun. 21, 2012
Ching-ling Chou, New Taipei, TW;
Ching-Ling Chou, New Taipei, TW;
Topower Computer Industrial Co., Ltd., New Taipei, TW;
Abstract
A portable loudspeaker includes a base and a speaker cap opposing the base. The base and speaker cap are interposed by a movable resonance portion. The movable resonance portion is formed in a storing state and a releasing state. The base has a resonance reflection portion to receive reverse resonance sound waves generated by a speaker. The movable resonance portion includes a first transmission channel to transmit the reverse resonance sound waves to the resonance reflection portion and a second transmission channel to transmit base sound waves generated by the resonance reflection portion from the reverse resonance sound waves towards the speaker cap. The speaker cap has a second audio outlet to output the bass sound waves.