Vibration actuator having an elastic member between a suspension plate and a magnetic circuit device
Patent 6850138 Issued on February 1, 2005. Estimated Expiration Date: 
December 1, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 1, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesIntegrated vibrating and sound producing device Vibration generating apparatus Vibration actuator having three vibration modes Patent #: 6628798 InventorAssigneeApplicationNo. 09869774 filed on 12/01/2000US Classes:335/222, With relatively movable coil and permanent magnet (e.g., D'Arsonval type) position on the cathode ray tube)340/388.1, Diaphragm (e.g., horn or buzzer)340/388.5, Armature support340/388.6, Having spring381/396, Electromagnetic (e.g., dyynamic)381/400Movable voice coilExaminersPrimary: Barrera, Ramon M.Attorney, Agent or FirmForeign Patent References
International ClassH01F 708AbstractA vibration actuator in which a magnetic circuit device (1,2,3) is elastically suspended to a vibration transmitter (12) by a suspension plate (5)in a predetermined direction, a primary elastic member (6a) is interposed between the suspension plate and the magnetic circuit device in the predetermined direction. A coil (10) is fixed to a vibrating member (9) and disposed in a magnetic gap of the magnetic circuit. It is preferable that the suspension plate has a leaf spring portion extending along a spiral curve between central and peripheral portions thereof.Field of SearchDiaphragm (e.g., horn or buzzer)With auxiliary flexible membrane With resonance chamber Armature support Having spring Housing or mounting Electromagnetic (e.g., dyynamic) Movable voice coil Magnetic circuit Having central magnetic portion Basket detail With relatively movable coil and permanent magnet (e.g., D'Arsonval type) position on the cathode ray tube) | |
