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
Single check memory devices and methods
Mobile terminal device capable of more effectively utilizing operation portions, conductive portion, operation detecting unit, power supply unit, and signal processing unit
Launch cable case
Related news articles
Method for processing power headroom and terminal thereof
Method for olympic event hospitality program management
Use of deuterium oxide for the treatment of virus-based diseases of the respiratory tract
  Randomly Featured Patents
Shrouded truck step kit
Iron oxide catalysts containing copper and zinc compounds and process for para-ethyltoluene dehydrogenation
Liquid crystal polymers
Micromachined ultrasonic transducer with air-backed cavity and electrical connection
Hologon scanner system
Method and apparatus for the inspection of contents of packaged products
Cable cylinder device
Charge-coupled device having an improved electrode structure
Electrically insulated quick disconnect heat sink
Method of forming a seal removal tab on a collapsible tube