Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Dynamic random access memory address line test technique
Integrated circuit having microelectromechanical system device and method of fabricating the same
Electrochemical battery pack with reduced magnetic field emission and corresponding devices
Playard
Room temperature single phase Li insertion/extraction material for use in Li-based battery
Device and method for delayed reading of digital video data
Power feeding method to an antenna
  Randomly Featured Patents
Self-clocking punched record reader
Method and apparatus for solving sequential constraints
Compression mechanism and scroll compressor including the same
Amorphous monomolecular surface coatings
Anti-two block system
2D/3D image display
Stable isocyanate formulations
Holographic information storage medium, and apparatus and method for inspecting defect thereof
Portable water purifier
Theft prevention system for trailers