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
Micro-fluidic device
Apparatus and method for multiplying frequency of a clock signal
Time sharing type autostereoscopic display apparatus and method for driving the same
Method, system and computer program product for managing funds in custodial deposit accounts
Solid-state imaging apparatus
Eye therapy system
Support for a parameterized query/view in complex event processing
  Randomly Featured Patents
Process for making reduced fat nut spreads
Custom watch
Tree skirt and storage wrapper
Turbine engine diffusing exhaust muffler
Hair clamp
Charged particle system including segmented detection elements
Tissue paper art and storage
Universal serial bus test system
Method of making a silicon nitride part
Heterocycles as protein kinase inhibitors