Resources Contact Us Home
Air gun fire time sensor

Image Number 2 for United States Patent #4402382.

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.

  Recently Added Patents
Differential ring oscillator and method for calibrating the differential ring oscillator
Placental tissue grafts
Pharmaceutical composition for treating CAPRIN-1 expressing cancer
Multi display device and method of controlling the same
Combining seismic data from sensors to attenuate noise
Automated dynamic differential data processing
  Randomly Featured Patents
Perpendicular magnetic recording medium with exchange-coupled magnetic layers and improved coupling layer
Removable stent-graft
Thiabicyclo compound, a polymer-containing said compound, and a photoresist micro pattern forming method using the same
Electroluminescent devices
Monitoring system and process for structural instabilities due to environmental processes
Rotary shaft sealing method and device
Apparatus for measuring toe-in of a motor vehicle wheel
Training bat system
Sensor device for the examination of surfaces
Traction control device for vehicles