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
Analog-to-digital converter control using signal objects
Method and system for fail-safe call survival
Instantaneous single click perpetual date mechanism
Relative pose estimation of non-overlapping cameras using the motion of subjects in the camera fields of view
Electrode composition with enhanced performance characteristics
Method for providing interactive site map
Active pellet without chemical additives
  Randomly Featured Patents
Packing board for electronic device, packing board manufacturing method, semiconductor module, semiconductor module manufacturing method, and mobile device
Pearl bracelet
Method and circuit for initializing a de-skewing buffer in a clock forwarded system
Information recording system
Frame assembly for snowmobile
Dental instrument
Sharply angled kelly (Jacobs's) clamp
Support structure for supporting a plurality of aligned solar reflector panels
Process for increasing display brightness of liquid crystal displays by bleaching polarizers using screen-printing techniques
Doctor device