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:
Oct. 15, 2002
Filed:
Jun. 27, 2001
Sang Gil An, Suwon, KR;
Samsung Electro-Mechanics Co., Ltd., Kyungki-Do, KR;
Abstract
Disclosed is a vibration speaker capable of transferring a stable vibratory force to a set including the vibration speaker for eliminating a touch sound of a vibrating mass and generating a minimum vibrating force during vibration by expanding inputted frequency bandwidth. The vibration speaker according to the invention includes a case having a space on an inner surface thereof, a vibrating plate having an external tip fixed onto an upper end portion of the case for generating a sound, a voice coil wound and fixed onto a lower end of the vibrating plate in a cylindrical shape, a plate having an external end portion fixed onto a lower end portion of the case, a magnetic circuit provided on a lower portion of the voice coil to include a magnet seated in a vertical direction, an upper plate and a yoke attached to the magnet for forming a magnetic field, a weight of a cylindrical shape fixed onto an external peripheral surface of the yoke, suspension springs fixed onto an internal peripheral surface of the case for suspending the magnetic circuit and the weight, and a magneto-rheological fluid having a predetermined degree of viscosity arranged between the magnetic circuit and the plate to function as a damping member while the suspension springs are displaced in a vertical direction.