Ammunition and explosives – Igniting devices and systems
Patent
1953-03-16
1980-03-18
Blum, Theodore M.
Ammunition and explosives
Igniting devices and systems
367149, F42B 2138, F42B 2148
Patent
active
041933460
ABSTRACT:
1. A vessel detecting apparatus comprising means responsive to the time ving negative pressure signal produced by the passage of a vessel in proximity to the detecting apparatus for producing an electrical signal having a time varying amplitude correlative with the square root of pressure signal, means for integrating said electrical signal over the interval of the negative pressure signal duration, and utilization means responsive to the time integral of said electrical signal.
REFERENCES:
patent: 1461056 (1923-07-01), Walker
patent: 2353920 (1944-07-01), Muzzey
patent: 2615940 (1952-10-01), Williams
patent: 2661430 (1953-12-01), Hardway
Anderson Alton D.
Estes Nelson N.
Blum Theodore M.
Branning A. L.
Sciascia R. S.
The Unites States of America as represented by the Secretary of
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