Resources Contact Us Home
Firearm cartridge and case-less chamber

Image Number 15 for United States Patent #7086336.

A firearm cartridge has a case configured with a relatively straight-walled portion and a shoulder portion for housing a quantity of propellant. The case further includes a neck for retaining a bullet. The straight-walled portion defines a base cavity having an interior base diameter. The interior base diameter is approximately twice or more the neck diameter. The diameter ratios of the base and neck optimize combustion efficiency to reduce heat and acceleration losses. The cartridge body cavity is sized and configured to contain a sufficient quantity of propellant such that igniting the propellant causes formation of a propellant plug having a diameter that is approximately the diameter of the bullet, and wherein the propellant plug shears free from unburned propellant that is disposed adjacent the relatively straight-walled body portion.

  Recently Added Patents
Data paths using a first signal to capture data and a second signal to output data and methods for providing data
Data portal for concurrent assessment
Pattern transfer apparatus and method for fabricating semiconductor device
Systems and methods for electronic verification of vehicle insurance coverage
Apparatus and method for adapted deblocking filtering strength
Method and system for dynamic storage tiering using allocate-on-write snapshots
Semiconductor device with hetero-junction bodies
  Randomly Featured Patents
Packet analysis apparatus and method thereof
Motion detection apparatus
Parallel-axis combination differential gear unit
Low-cost document feeder for copiers
Electrical terminal
Device and method for trans myocardial revascularization
Process for preparing 1,2,3,4-butanetetracarboxylic acid
Oscillator having capacitor charged and discharged by current mirror circuits
Circuit for detecting and controlling simultaneous conduction of two switches connected in series
Method for allocating the switching-oriented resources of a communication system for switched connections and permanent circuit connections