| FORTUNE GRAND TECHNOLOGY INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110182463 | ULTRA-THIN LOUDSPEAKER - An ultra-thin loudspeaker including: a) an iron basin having a first receiving portion and a second receiving portion at the top surface thereof; b) a magnet unit positioned within the first receiving portion of the iron basin; c) a voice coil positioned around the magnet unit; and d) a vibrating diaphragm positioned within the second receiving portion. These are assembled to form a mini-speaker. Furthermore, the mini-speaker is enclosed by a top and a bottom metal cover. In this way, the mini-speaker of the invention resolves the heat-dissipating problem of the conventional thin loudspeaker. Moreover, the thickness of the entire loudspeaker may be minimized. In addition, an excellent concentration of the magnetic force is achieved and the production yield rate is increased. | 07-28-2011 |
| 20110085694 | ULTRA-THIN SPEAKER - An ultra-thin speaker includes a metal upper casing, and a metal lower casing corresponding to the metal upper casing and capable of covering a vibrating membrane, a support frame, a magnet and a yoke between two corresponding internal surfaces of the metal upper and lower casings and forming a contact surface with the yoke, such that after the yoke conducts heat of a heat source to the metal lower casing, the heat is conducted to the metal upper casing through a connection and a contact of the metal upper and lower casings to increase a heat dissipating area, so as to overcome the heat dissipation problem and minimize the overall thickness of the speaker. | 04-14-2011 |
| 20090175463 | NOISE-CANCELING SOUND PLAYING STRUCTURE - A noise-canceling sound playing structure includes a noise canceling mechanism having at least one filtering and phase-reversing unit, an amplifier, and a power supply unit; and a sound output mechanism having at least one enclosure. The enclosure has a first speaker arranged therein and connected to the amplifier, a second speaker arranged therein and connected to an external sound player, and a microphone mounted thereon and connected to the filtering and phase-reversing unit. A chamber is defined in the enclosure between the first and second speakers and the microphone. External noise signals are picked up by the microphone and sent to the noise canceling mechanism for processing at the filtering and phase-reversing unit and the amplifier to thereby produce phase-reversed signals, which are sent to the first speaker to cancel out external noise without being mixed with the musical sound transmitted from the external sound player to the second speaker. | 07-09-2009 |
