Eric S Leung

US Patent:

6553027, Apr 22, 2003

Filed:

May 21, 1999

Appl. No.:

09/315971

Inventors:

Ian Lam - Daly City CA
Eric Tsin-Ho Leung - San Jose CA

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

H04Q 1100

US Classification:

370386, 370396

Abstract:

An arrangement and method of operating a network switch arrangement in a packet switched network connects a plurality of multiport network switches which is in a circular, serial manner so that data is transferable between the network switches only unidirectionally. When it is determined that data is to be transmitted from a first network switch to a port in a second network switch, the data is transmitted over an expansion bus from the first network switch to the second network switch in a continuous stream of data bursts. This extremely fast transmission between the networks switches allows multiple multiport network switches to be cascaded together to effectively form a single network switch with at least twice as many ports.

US Patent:

20220276016, Sep 1, 2022

Filed:

Feb 25, 2022

Appl. No.:

17/681246

Inventors:

- Fountain Valley CA, US
Michael Standen - Fountain Valley CA, US
Eric Hung Leung Chow - Fountain Valley CA, US
Ryan Steven Glasby - Fountain Valley CA, US

Assignee:

SureFire, LLC - Fountain Valley CA

International Classification:

F41A 21/30

Abstract:

An apparatus and methods are provided for a suppressor to be coupled with a muzzle end of a barrel of a firearm to reduce muzzle blast and muzzle flash. The suppressor comprises a housing having a proximal end and a distal end. A front portion within the housing comprises a series of cylindrical gas expansion chambers for attenuating the temperature and energy of propellant gases accompanying a projectile fired from the firearm. An annular gas expansion chamber surrounds the cylindrical gas expansion chambers and directs a portion of the propellant gases from a rear portion of the suppressor to peripheral vents disposed at the distal end. Lateral chambers within the rear portion deflect and rebound a portion of the propellant gases before passing them into the annular gas expansion chamber. Ledges within the annular gas expansion chamber direct the propellant gases distally through suppressor toward the peripheral vents.

US Patent:

20230039423, Feb 9, 2023

Filed:

Aug 5, 2022

Appl. No.:

17/882430

Inventors:

- Fountain Valley CA, US
Michael Standen - Fountain Valley CA, US
Eric Hung Leung Chow - Fountain Valley CA, US
Ryan Steven Glasby - Fountain Valley CA, US
Doug Stefanski - Fountain valley CA, US

Assignee:

SureFire, LLC - Fountain Valley CA

International Classification:

F41A 21/30

Abstract:

An apparatus and methods are provided for a front plate having a diverging central bore for firearm sound suppressors that improves noise and flash characteristics during firing a weapon. The central bore is disposed between a back surface and a front surface of the front plate. An untapered portion of the central bore extends from the back surface to a diverging portion that opens toward the front surface. The diverging portion includes a curvature profile configured to allow for more controlled expansion of high-pressure propellant gases exiting of the suppressor through the central bore. The curvature profile provides an included angle of the central bore that decreases secondary flash events accompanying the expulsion of propellant gases accompanying a fired bullet exiting the suppressor through the central bore. The curvature profile exhibits a cross-sectional area of the central bore that is proportional to a distance along the diverging portion.

US Patent:

20230021170, Jan 19, 2023

Filed:

Sep 20, 2022

Appl. No.:

17/948667

Inventors:

- Fountain Valley CA, US
Michael Standen - Fountain Valley CA, US
Eric Hung Leung Chow - Fountain Valley CA, US
Ryan Steven Glasby - Fountain Valley CA, US
Douglas Lawrence Stefanski - Fountain Valley CA, US

Assignee:

SureFire, LLC - Fountain Valley CA

International Classification:

G06F 30/17
G06F 30/20

Abstract:

An apparatus and methods are provided for a suppressor to be coupled with a muzzle end of a barrel of a firearm to reduce muzzle blast and muzzle flash. The suppressor comprises a housing having a proximal end and a distal end. A front portion within the housing comprises a series of cylindrical gas expansion chambers for attenuating the temperature and energy of propellant gases accompanying a projectile fired from the firearm. An annular gas expansion chamber surrounds the cylindrical gas expansion chambers and directs a portion of the propellant gases from a rear portion of the suppressor to peripheral vents disposed at the distal end. Lateral chambers within the rear portion deflect and rebound a portion of the propellant gases before passing them into the annular gas expansion chamber. Ledges within the annular gas expansion chamber direct the propellant gases distally through suppressor toward the peripheral vents.