BARRIER SONAR
Assignee
Filed
Jul 19, 1968
Granted
Jul 3, 1990
Location
Abstract
An electronic barrier utilizes a bifurcated beam of wave energy to establ a barrier area having a null between the forks thereof. Objects encroaching on said beam cause a portion thereof to be scattered in the foreward direction. Suitable receiver equipment located remote from the source of the bifurcated beam and responsive to the foreward scattered beam is connected to provide an indication of said encroachment.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jan 22, 1982
Rescinded
Mar 15, 1990
Duration
8 years, 1 month
Record Details
- Patent number
- US 4939702
- Application
- 04747037
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
More from this assignee
IMPROVED CATALITIC SYNTHESIS OF CAGED POLYNITRAMINE COMPOUNDS
SOLID ROCKET PROPELLANT
DUAL INFRARED BAND OBJECTIVE LENS
BANDGAP RADIATION DETECTOR
METHOD OF FORMING TEXTURED HIGH-TEMPERATURE SUPERCONDUCTORS
APPARATUS FOR CONTROLLING THE POSITION AND DIRECTION OF A LASER BEAM
Related by domain
MISSILE GUIDANCE SYSTEM
Raytheon
LASER ALONG BODY TRACKER (SABOT II)
TRW
LASER ALONG-BODY TRACKER (SABOT III)
TRW
ARTICLE COMPRISING A UNIPOLAR SUPERLATTICE LASER
LUCENT TECHNOLOGIES INC.
INTRACAVITY QUANTUM WELL PHOTODETECTOR INTEGRATED WITHIN A VERTICAL-CAVITY SURFACE-EMITTING LASER AND METHOD OF OPERATING SAME
CALIFORNIA, UNIVERSITY OF, THE, REGENTS OF, THE
LASER DIODE MOUNTING TECHNIQUE TO EVENLY DEPOSIT ENERGY
TRW