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
Battery consisting of a plurality of cells positioned and connected together without welding
Dental X-ray apparatus and associated method
Cache management system and method
N-way routing packets across an intermediate network
Printer for receiving direct printer requests and mapping features of the requests to required settings
Determining relevant information for domains of interest
Phase-locked-loop with quadrature tracking filter for synchronizing an electric grid
  Randomly Featured Patents
Cellular network data transmission system
Control unit for torch-cutting machines used in continuous casting
Platinum silicide fuse links for integrated circuit devices
Process for correcting the reference flux of a converter-powered multi-phase machine and circuit for implementing the process
HSL corrections in CMY color space
Fluid turbine system
Clinical protocol document production
Ultrasonic massager
Shower unit
Thread private memory storage of multi-thread digital data processors using access descriptors for uniquely identifying copies of data created on an as-needed basis