SEISMIC-ACOUSTIC DETECTION DEVICE
Assignee
Filed
Feb 19, 1970
Granted
Oct 1, 1991
Location
HATBORO PA US
Abstract
A detection system for indicating the presence of motorized equipment in aesignated area having an acoustic sensor, a seismic sensor and an acoustic signal transmitter. The seismic sensor output, processed to discriminate against vibrations of short duration, is fed along with the acoustic sensor output, to an "ANDing" circuit which gates the acoustic transmitter. The acoustic sensor output is passed to the transmitter only during coincidence of seismic and acoustic detection.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 3, 1982
Rescinded
Aug 1, 1990
Duration
8 years, 5 months
Inventor
- 1GEORGE A. GIMBER
Record Details
- Patent number
- US 5054006
- Application
- 05014834
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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