Air gun utilizing magnetized shuttle

Details Air gun utilizing magnetized shuttle Air gun utilizing magnetized shuttle

1975-04-03

1977-07-12

Birmiel, Howard A.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181107, 181111, 340 12R, 324 34PS, 324 34D, G01V 138

Patent

active

040348270

ABSTRACT:
Disclosed is an improved air gun construction which lends itself to use with a plurality or array of similarly improved air guns which enables easy synchronization and timing of such array of air guns relative to one another. In the preferred embodiment, the air gun comprises a shuttle having magnetic properties and an electrical coil in proximity to said shuttle. When the air gun is actuated and the shuttle is accelerated, a voltage is induced in the coil by the flux lines from the magnetized shuttle moving through the turns of the coil. Electrical circuit means associated with each gun senses when a predetermined voltage is induced in the coil and generates a timing signal for each air gun. Additional electrical circuit means phases each of the timing signals from the air guns to occur at a predetermined time to thereby insure firing each of the air guns accurately. The timing signals from each of the air guns are used in conjunction with additional signals to accurately indicate auto fire and no fire conditions of the air guns.

REFERENCES:
patent: 3653460 (1972-04-01), Chelminski
patent: 3687218 (1970-09-01), Ritter
patent: 3735244 (1973-05-01), Gumtau et al.

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