Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Deployable sonar array with interconnected transducers operated in the bending mode










Image Number 3 for United States Patent #4208738.

A sonar array consists of a significant number of interconnected disk-shaped transducer projectors operating in the bending mode and packaged in a cylindrical housing including a first or lower section including an electronics and battery package for powering the transducer projectors; a main housing containing the stacked, interconnected transducer elements and having padding of foam material for protecting the transducer elements during deployment and handling; and a rear case section which contains a parachute to control rate and attitude of descent from the launching aircraft, a float or buoy in association with the parachute for providing flotation during operation, and a coiled length of nylon rope for suspending the deployed array at the desired distance below the surface. A retaining line or spring clips are used to hold the transducer elements in the main case section during descent in the water following separation of the rear case section and uncoiling of the nylon rope. When the housing reaches the end of the nylon rope, the resulting force acts to pull the transducer elements out of the main case section, breaking the retaining line and/or overcoming the force of the spring clips until the entire array is suspended in the ocean above the housing. A suitable time-responsive means operates to deflate the float or buoy when the array has completed its task.








 
 
  Recently Added Patents
Pharmaceutical composition for treating CAPRIN-1 expressing cancer
Methods and systems for dynamic spectrum arbitrage
Tuning peg for a stringed instrument
Cell proliferation inhibitor
Double patterning method using tilt-angle deposition
Method and apparatus for sensing an input object relative to a sensing region of an ultrasound sensor device
Method and device for managing subscriber connection
  Randomly Featured Patents
Bottom supporting construction for a leg end of a displaceable jack-up platform
Device for cleaning a charging member
Speaker
Method and apparatus to sense and report connection integrity of a differential ECL transmission line having proper parallel termination
Prosthesis having a sleeve valve
Method for routing outgoing and incoming data in an NFC chipset
Sheet discharge apparatus, image forming apparatus and sheet discharging method
Yield strength determination of ferromagnetic materials
Clamp
Semiconductor light-emitting device