Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Double piston acoustic transducer with selectable directivity










Image Number 2 for United States Patent #4996674.

A direction selective transducer which includes a center mass fixed between two active transducer element stacks and two head masses. The center mass couples the two stacks and allows the ratio of radiation produced by each head mass to be selected as desired by varying the amplitude and phase of drive voltages applied to the stacks. The transducer can also be used as a directional receiver.








 
 
  Recently Added Patents
Chemically bonded carbon nanotube-polymer hybrid and nanocomposite thereof
Methods and systems for managing print device supplies using cloud administration system configured for chemical signature tracking
Data architecture and user interface for plasma processing related software applications
Porous polymeric resins
Drinking glass with ball embedded in base
System and method for order placement in an electronic trading environment
Compounds for nonsense suppression and methods for their use
  Randomly Featured Patents
Oxide magnetic material, coil components using the same, and method for producing oxide magnetic materials and coil components
Apparatus for localized planarization of semiconductor wafer surface
Low-temperature hydrogen production from oxygenated hydrocarbons
Capo system
Automatic washer agitator or the like
Light source device to be utilized mainly for projection purposes
System and process for automatic stacking, storage and withdrawal of packaged merchandise in large warehouses
Dianthus planted named `WP10 HEL01`
Bottle neck structure and a manufacturing method therefor
Manual seat back latch for vehicles