Air gun fire time sensor

Details Air gun fire time sensor Air gun fire time sensor

1981-05-11

1983-09-06

Tubbesing, T. H.

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

181107, 181119, 367144, 367185, G01V 138

Patent

active

044023820

ABSTRACT:
A robust air gun fire time sensor consists of a housing to which is secured a protruding nonmagnetic internal barrel having a bore. The bore is closed at one end by a magnetic end cap defining an air chamber and the bore is in fluid communication with the firing chamber of an air gun. A generator coil surrounds the barrel. A bar magnet is floatingly mounted inside the bore and is urged against a shoulder formed in the end cap. When the air gun is charged with compressed air, some of the air becomes entrapped in the air chamber. When the air gun is fired, the entrapped compressed air in the air chamber pushes the bar magnet away from the shoulder. The collapsing magnetic field creates a transient electric pulse in the generator coil.

REFERENCES:
patent: 3370672 (1968-02-01), Eberlan
patent: 3638752 (1972-02-01), Wakefield
patent: 4034827 (1977-07-01), Leerskov, Jr. et al.
patent: 4047591 (1977-09-01), Ward et al.
patent: 4114723 (1978-09-01), Paitson et al.
patent: 4134097 (1979-01-01), Cowles
patent: 4210222 (1980-07-01), Chelminski et al.
patent: 4211300 (1980-07-01), Miller
patent: 4240518 (1980-12-01), Chelminski

Affiliated with

Also associated with

Rating

Air gun fire time sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air gun fire time sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air gun fire time sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1587629