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Inventor:
Jamison; John R.
Address:
Eugene, OR
No. of patents:
9
Patents:




Patent Number Title Of Patent Date Issued
6678983 Ultra-short-action firearm for high-power firearm cartridge January 20, 2004
A short-action firearm has a chamber and bolt assembly with unique pressure, length and diametric relationships. The overall length of the chamber has a ratio to a diameter thereof, at a predetermined location on a wide portion of the chamber, of no more than about 3.5. Such diameter is
6675717 Ultra-short high-power firearm cartridge January 13, 2004
A short-action firearm cartridge has unique pressure, length and diametric relationships. The overall length of the cartridge case has a ratio to a diameter thereof, at a predetermined location on a wide portion of the case, of no more than about 3.5. Such diameter is at least about 0.53
6595138 High-power firearm cartridge July 22, 2003
A short-action firearm cartridge has unique pressure, length and diametric relationships. The overall length of the cartridge case has a ratio to a diameter thereof, at a predetermined location on a wide portion of the case, of no more than about 4.2. Such diameter is at least about 0.53
6550174 Short-action firearm for high-power firearm cartridge April 22, 2003
A short-action firearm has a chamber and bolt assembly with unique pressure, length and diametric relationships. The overall length of the chamber has a ratio to a diameter thereof, at a predetermined location on a wide portion of the chamber, of no more than about 4.2. Such diameter is
6354221 High-power firearm cartridge March 12, 2002
A firearm cartridge case capable of withstanding internal gas pressures of at least about 50,000 psi has two substantially cylindrical portions of significantly different diameters interconnected by a frusto-conical shoulder portion. The case has a ratio of its overall length to its
5970879 High-power firearm cartridge for short-action chamber and bolt assembly October 26, 1999
A firearm cartridge case capable of withstanding internal gas pressures of at least about 50,000 psi has two substantially cylindrical portions of significantly different diameters interconnected by a frusto-conical shoulder portion. The case has a ratio of its overall length to its
5826361 Short-action chamber and bolt assembly for high power firearm cartridge October 27, 1998
A firearm cartridge case capable of withstanding internal gas pressures of at least about 50,000 psi has two substantially cylindrical portions of significantly different diameters interconnected by a frusto-conical shoulder portion. The case has a ratio of its overall length to its
5531113 Ballistics measuring system July 2, 1996
A plurality of pressure transducers are spaced apart longitudinally along a mass of fluid so that they can sense disturbances in the fluid. A projectile launcher, which is typically a gun, is positioned such that the projectile launcher can be discharged to launch a projectile into the
5357796 Ballistics measuring system October 25, 1994
An elongate vessel containing a fluid is equipped with at least one and preferably a plurality of pressure transducers spaced apart longitudinally along the vessel that can sense disturbances in the fluid. A projectile launcher, which is typically a gun, is positioned such that the proje


 
 
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