US 2015/0101882 A1Published application

System and method for multi-stage bypass, low operating temperature suppressor for automatic weapons

AssigneeLawrence Livermore National Security, LLC

InventorsWilliam C. MOSS, Andrew T. ANDERSON

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Abstract

The present disclosure relates to a suppressor for use with a weapon. The suppressor may be formed to have a body portion having a bore extending concentric with a bore axis of the weapon barrel. An opening in the bore extends at least substantially circumferentially around the bore. A flow path communicates with the opening and defines a channel for redirecting gasses flowing in the bore out from the bore, through the opening, into a rearward direction in the flow path. The flow path raises a pressure at the opening to generate a Mach disk within the bore at a location approximately coincident with the opening. The Mach disk forms as a virtual baffle to divert at least a portion of the gasses into the opening and into the flow path.

Claims22

Dependent claims

A suppressor for use with a weapon that fires a bullet, the suppressor adapted to be secured to a distal end of a barrel of the weapon, the suppressor including:

a body portion having a bore extending concentric with a bore axis of the barrel when the suppressor is attached to the distal end of the barrel;
an opening in the bore of the body portion extending at least substantially circumferentially around the bore;
a flow path in communication with the opening and defining a channel for redirecting expanding propellant gasses flowing in a forward direction in the bore out from the bore, through the opening, initially into a rearward direction in the flow path, and subsequently back into the bore,
and wherein the flow path helps to raise a pressure at the opening to a level which is sufficient to generate a Mach disk within the bore at a location approximately coincident with the opening, when a bullet from a cartridge is fired into the barrel, the Mach disk acting as a virtual baffle to divert at least a portion of the expanding propellant gasses behind the bullet into the opening and into the rearward direction defined by the flow path;
and
a discharge port in communication with the bore, the discharge port being formed at a downstream end of the suppressor where the bullet and the expanding propellant gasses exit the barrel.

3 more elements

A suppressor for use with a weapon that fires a bullet, the suppressor adapted to be secured to a distal end of a barrel of the weapon, the suppressor including:

a body portion having a bore extending concentric with a bore axis of the barrel when the suppressor is attached to the distal end of the barrel;
an opening formed in the bore of the body portion, the opening defining a first area extending circumferentially around the bore;
a serpentine flow path in communication with the opening, the serpentine flow path having a first portion, a second portion, and a downstream portion, the first portion redirecting expanding propellant gasses flowing in a forward direction in the bore in a rearward direction and defining a second area;
the first portion of the serpentine flow path and the opening cooperating to create an increase in pressure at the opening to a level which is sufficient to create a Mach disk at or adjacent to the opening, and wherein the Mach disk acts as a virtual baffle to divert the expanding propellant gasses behind a bullet travelling through the bore from the bore into the opening, and into the first portion of the serpentine flow path;
and
a discharge port in communication with the bore, the discharge port being formed at a downstream end of the suppressor where the bullet and the expanding propellant gasses exit the barrel.

3 more elements

Dependencies are inferred from the claim text.