Resources Contact Us Home
Electrostatic ultrasonic transducer and ultrasonic speaker

Image Number 17 for United States Patent #8126171.

An electrostatic ultrasonic transducer includes a first electrode that has through-holes, a second electrode that has through-holes, and a vibrating membrane that is disposed such that the through-holes of the first electrode and the through-holes of the second electrode form a pair, interposed between a pair of electrodes composed of the first electrode and the second electrode, and having a conductive layer applied with a direct current bias voltage. The first electrode and the second electrode each have counter electrode portions that are formed in the through-holes to face the vibrating membrane, and a modulated wave, which is obtained by modulating a carrier wave in an ultrasonic frequency band with a signal wave in an audible frequency band, is applied between the pair of electrodes.

  Recently Added Patents
Display stand for a mobile tablet computer
Disposable and tamper-resistant RFID lock
Character input device and program for displaying next word candidates based on the candidates' usage history
Phase lock loop with injection pulse control
Methods and compositions to treat and detect misfolded-SOD1 mediated diseases
Methods for increasing efficacy of FOLR1 cancer therapy
Light emitting device
  Randomly Featured Patents
Methods for providing an improved exercise device with access to motivational programming over telephone communication connection lines
Self-propelled vehicle
Dual unit cable stay building
Electronic musical instrument having a search function and a replace function
Safety device for reacting to a web tear particularly in a roller rotary offset printing machine
Computer system and method for sharing a job with other computers on a computer network using IP multicast
Method and system for communication between two devices by editing machine specific information at a proxy server
Crescent shaped support cover
Engine component part and method for producing the same
Phase change media for high density data storage