Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Ultrasonic transducer










Image Number 10 for United States Patent #4881212.

This invention is basically, an ultrasonic transducer that can be configured with good reproducibility, that includes an acoustic impedance matching member that gradually changes the acoustic impedance, and which is characterized byAn acoustic impedance matching member(2) configured with multiple unit layers (21, 22, 23, . . . 2n), each layer being thinner than a quarter-wavelength of an ultrasonic wave, andeach unit layer having a laiminated structure make up of heavy metal(52) and plastic(51) layers with a thickness ratio set between them to change gradually from the unit layer close to the ultrasonic oscillator to the unit layer close to the subject.








 
 
  Recently Added Patents
Plants and seeds of hybrid corn variety CH260114
Method for switching channels in a wireless communication network
Stage drive method and stage unit, exposure apparatus, and device manufacturing method
Boring machine
Method of forming a power supply controller and structure therefor
Voltage regulator with improved voltage regulator response and reduced voltage drop
Advertising apparatus
  Randomly Featured Patents
Up-and-down bicycle handlebar ends
Curved surface display for a gaming machine
Container for a tamper-evident closure
Method of and device for recovering heat energy of hot raw gas gererated a coal gasification arrangement of an electric energy generating plant
Auditor's toolbox
Handle for a plumbing fitting
Secure test-for-yield chip diagnostics management system and method
Controlling a personal medical device
Plate-like ferrite particles with magnetoplumbite structure and magnetic card using the same
Means for engaging a slider automatically on a slide fastener chain