The United States Patent and Trademark Office (USPTO) contains a searchable database of both patents and patent applications. While strolling through the system doing researching for a future TFB piece, I came across some interesting suppressor-related finds. Some of the applications are recent and others are a few years old, but either way, it is an interesting look into some big name players in the suppressor market and seeming lesser known individuals with unique ideas.

Mathematical Modeling Of The Nautilus Shell:

Silencers on the USPTO @TFB

RA Brands, LLC = Remington Arms = Advanced Armament:

Embodiments of the present disclosure may include a silencer or noise suppressor having a rearward portion that may be coupled to the barrel of a firearm and a forward portion that can mate with the rearward portion such that a length of the rearward portion may at least partially overlap an exterior surface of the forward portion. The forward portion may include an interior chamber that can receive a baffle core having a core body made up of a series of spaced peripheral portions, and at least a portion of the baffle core may protrude from the interior chamber so as to be substantially sealed between the rearward and forward portions.

An Interesting CYCLIC Baffle Design:

Silencers on the USPTO @TFB

GEMTECH ‘QUICK CONNECT FOR PISTOL SUPPRESSOR’:

Silencer patents @TFB

Silencer patents @TFB

FloDesign Inc. Baffle Design:

Silencer patents @TFB

FN AMERICA MACHINEGUN SUPPRESSOR:

A sound suppressor for a firearm with a high rate of fire, such as a machine gun, conceals the location of the firearm during heavy use by rapidly dissipating heat through a foamed carbon core. A sound suppressing baffle core is coaxially located within a tubular housing, having flared ends extending beyond the core. An inlet nozzle and exit place close the ends of the suppressor and are held in place with threaded collars. The terminal portions of the collars are beveled, as are the corresponding terminal portions of the nozzle and end plate, and are used to capture the flared portions of the ends of the tubular housing. Diagonally opposing recesses in the collars enable their removal with a spanner wrench, along with the other components for maintenance and replacement. The suppressor lasts longer and has a less visible heat signature used in sustained fire on a machine gun.

Silencer patents @TFB

Silencer patents @TFB

A Suppressor that uses a porous substrate to act as Baffle material.

Silencer patents @TFB

Baffle layout from SAKO in Finland.

Silencer patents @TFB

US Navy, Naval Surface warFare center (nswc), crane, IN:

A suppression system adapted to receive gas from a gas operated system and route the gas through a series of multiple chambers having baffles and/or valves as well as expansion chambers where the chambers are formed around a gas projectile barrel and adapted to route the gas in a first route along the barrel in a first direction then routing the gas along the barrel in a second direction. An embodiment of the invention couples the chambers to a gas block adapted to route gas between the chambers in the first and second route as well as receive gas from the projectile barrel and route it to the gas operated system. Methods of manufacturing and methods of use are also provided.

Silencer patents @TFB

An interesting look at a SureFire baffle stack

Silencer patents @TFB

Automatic Gas regulation in an AR platform (Remington/AAC):

A gas system includes a gas block having a gas port for directing propellant gases received from a gas port of a barrel of a firearm into the gas system to cycle an auto loading feature of the firearm. A spring-loaded plunger assembly positioned within the gas block includes a plunger component having a plurality of gas ports and a plunger cap at a forward end, wherein the position of the plunger component within the gas block automatically controls an amount of gas that is allowed to enter the gas system. Mounting a suppressor to the muzzle of the barrel depresses the plunger cap and drives it linearly rearward causing the plunger component to rotate to automatically restrict the volume of propellant gases directed into the gas system through a restricted flow gas port in the plunger component.

Silencer patents @TFB

Suppressor Covers:

Silencer patents @TFB

Coil Baffle Design:

Silencer patents @TFB

Jesse James in the USPTO:

Silencer patents @TFB