Search Patents
  • Gas operating system for an automatic firearm
    Patent number: 11022389
    Abstract: Techniques and architectures are disclosed for a gas operating system for a firearm. The system includes a barrel having a bore including a rifled portion. Attached to the barrel is a gas block. Located distally of the rifled portion of the bore is a gas expansion chamber in fluid communication with the bore and the gas block. In some examples, the gas expansion chamber includes a diameter at least twice the bore diameter. The gas block of the gas operating system, in some examples, includes a piston, where in response to receiving gases from the gas expansion chamber, the piston cycles the gas operating system.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: June 1, 2021
    Assignee: SIG SAUER, INC.
    Inventors: Douglas Aubin, David Michael Wilkes, Aaron C. Sakash, Lindsay Bunch
  • Machine gun suppressor
    Patent number: 11859932
    Abstract: A suppressor for a firearm includes a baffle stack having an outer surface, the baffle stack comprising a plurality of baffles that define an inner chamber extending along a central axis of the baffle stack and a projectile pathway through the baffle stack along the central axis. An outer housing is around the baffle stack and defines an outer volume between the outer housing and the baffle stack. Structures and openings in the suppressor promote a sinuous gas flow path through the inner chamber that enhances turbulent flow within the suppressor and reduces backpressure as desirable when used with a machine gun.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: January 2, 2024
    Assignee: Sig Sauer, Inc.
    Inventor: Krzysztof J. Kras
  • PROJECTILE WITH CORE-LOCKING FEATURES AND METHOD OF MANUFACTURING
    Publication number: 20190017789
    Abstract: A firearm projectile has a core extending along a central axis from a base portion to a tip portion, the base portion generally having a cylindrical shape and the tip portion comprising an ogive shape. A jacket encases the core along the base portion and the tip portion, the jacket having a shank portion defining a closed rear end and an ogive portion extending to an open front end. Protrusions extend into the core from an inside of the shank portion, the protrusions having a spaced-apart arrangement with each protrusion engaging the core to retain the core together with the jacket upon impact with a target.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 17, 2019
    Applicant: Sig Sauer, Inc.
    Inventor: Thomas J. Burczynski
  • Telescopic sight having ballistic group storage
    Patent number: 11454473
    Abstract: A riflescope that stores several grouped ballistics data includes a reticle having individually addressable indicators, a memory that stores two or more stored sets of ballistics data, where each set of ballistics data is mapped to a respective set of indicators of the reticle, a selector configured to choose one of the stored sets of ballistics data as an active set of ballistics data, and a driver structured to energize only those indicators of the plurality of indicators that are mapped to the active set of ballistics data. Methods of selecting an active group of ballistics data are also described.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: September 27, 2022
    Assignee: SIG SAUER, INC.
    Inventors: Andrew W. York, Luke C. Corbin
  • FIREARM STOCK ADJUSTMENT SYSTEM
    Publication number: 20170356718
    Abstract: A firearm stock extension assembly enables a stock to be collapsed when a firearm is not in active use, and extended from a collapsed configuration directly to the user's preferred stock length. This is accomplished without requiring the user to actuate a lever to release a detent mechanism and without the need for hand tools to adjust the length of the stock. The firearm stock extension assembly includes an insert that defines at least one insert aperture. When properly placed, the insert aperture of the insert lines up with a corresponding extension aperture on the stock. Other than the corresponding extension aperture exposed by the insert aperture, all other extension apertures are concealed by the solid portions of the insert.
    Type: Application
    Filed: June 6, 2017
    Publication date: December 14, 2017
    Applicant: Sig Sauer Inc.
    Inventor: Adam Johnson
  • OPERATING SYSTEM FOR SMALL CALIBER RIFLES
    Publication number: 20200033079
    Abstract: A weapon system is provided. The weapon system includes a receiver and an operating group. The operating group includes a bolt at least partially housed within the receiver; an operating rod (op-rod) assembly arranged to axially translate within the bolt. The operating group also includes a carrier assembly, a bolt assembly, and a recoil assembly. The system further includes a hinge or pivot joint at a connection between the recoil assembly and the carrier assembly, a firing pin lock, an elastomeric cone interface between the bolt assembly and the receiver, a hollowed out piston, and/or tapering on the lug of the bolt assembly.
    Type: Application
    Filed: June 12, 2019
    Publication date: January 30, 2020
    Applicant: Sig Sauer, Inc.
    Inventors: David Luke Steimke, Bryan Charles Dustin, Aaron C. Sakash
  • AMMUNITION MAGAZINE
    Publication number: 20190195584
    Abstract: A detachable box magazine for firearms includes a hollow magazine tube extending longitudinally along a median plane. The magazine tube defines a single-stack portion extending to an upper tube end with an upper tube opening. The magazine tube defines a double-stack portion positioned below the single-stack portion and extending to a bottom tube end with a bottom tube opening. For example, opposite lateral margins of the front sidewall can have a stepped shape between the upper tube end and the double-stack portion. The rear sidewall can have a linear taper between the upper tube end and the double-stack portion.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Applicant: Sig Sauer, Inc.
    Inventors: Adrian Thomele, Jason Knight
  • AMMUNITION MAGAZINE
    Publication number: 20200056852
    Abstract: A detachable box magazine for firearms includes a hollow magazine tube extending longitudinally along a median plane. The magazine tube defines a single-stack portion extending to an upper tube end with an upper tube opening. The magazine tube defines a double-stack portion positioned below the single-stack portion and extending to a bottom tube end with a bottom tube opening. For example, front portions of the opposite tube sidewalls have a stepped shape between the upper tube end and the double-stack portion, and the rear portions of the sidewalls have a linear taper between the upper tube end and the double-stack portion.
    Type: Application
    Filed: October 23, 2019
    Publication date: February 20, 2020
    Applicant: Sig Sauer, Inc.
    Inventors: Adrian Thomele, Jason Knight, Scott D. Shinkle
  • AMMUNITION MAGAZINE
    Publication number: 20210041197
    Abstract: A detachable box magazine for firearms includes a hollow magazine tube extending longitudinally along a median plane. The magazine tube defines a single-stack portion extending substantially to an upper tube end that defines an upper tube opening. The magazine tube has a double-stack portion positioned below the single-stack portion and extending to a bottom tube end. For example, front portions of the opposite tube sidewalls have a stepped shape between the upper tube end and the double-stack portion, and the rear portions of the sidewalls have a linear taper between the upper tube end and the double-stack portion.
    Type: Application
    Filed: October 14, 2020
    Publication date: February 11, 2021
    Applicant: Sig Sauer, Inc.
    Inventors: Adrian Thomele, Jason Knight, Scott D. Shinkle
  • Ambidextrous charging handle
    Patent number: 11274889
    Abstract: A charging handle assembly includes a body extending along a longitudinal axis and having a proximal end portion and a distal end portion. A handle is connected to the proximal end portion of the body and is translatable along the body between a first position and a second position. A latch is connected to the handle or the body and is operable between a latched position and an unlatched position. Moving the handle from the first position to the second position moves the latch from the latched position to the unlatched position. Also disclosed is a charging handle assembly with a latch configured to engage a top of the lower receiver.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: March 15, 2022
    Assignee: Sig Sauer, Inc.
    Inventors: Reed Hubbell, David B. Hopkins, Harry Andrew Packard
  • MULTI-PIECE CARTRIDGE CASING AND METHOD OF MAKING
    Publication number: 20200182594
    Abstract: A multi-piece ammunition cartridge casing includes a casing base extending along a central axis and defining an opening extending axially into the casing base from the distal base end. The inner casing surface defines a circumferential groove with a groove radius greater than a radius of an adjacent portion of the opening. The cartridge casing also includes a casing body with a proximal end portion disposed in the opening of the casing base. The casing body is secured to the casing base by way of a flange protruding radially outward in mating contact with the circumferential groove.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 11, 2020
    Applicant: Sig Sauer, Inc.
    Inventors: Jason W. Imhoff, Thomas J. Burczynski, Keith E. Brown, Robert M. Grove
  • Multi-piece cartridge casing and method of making
    Patent number: 10866072
    Abstract: A multi-piece ammunition cartridge casing includes a casing base extending along a central axis and defining an opening extending axially into the casing base from the distal base end. The inner casing surface defines a circumferential groove with a groove radius greater than a radius of an adjacent portion of the opening. The cartridge casing also includes a casing body with a proximal end portion disposed in the opening of the casing base. The casing body is secured to the casing base by way of a flange protruding radially outward in mating contact with the circumferential groove.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: December 15, 2020
    Assignee: Sig Sauer, Inc.
    Inventors: Jason W. Imhoff, Thomas J. Burczynski
  • Suppressor with reduced gas back flow
    Patent number: 11686547
    Abstract: A suppressor for a firearm includes a baffle stack having an outer surface, the baffle stack comprising a plurality of baffles that define an inner chamber extending along a central axis of the baffle stack and a projectile pathway through the baffle stack along the central axis. An outer housing is around the baffle stack and has an inner surface separated from and confronting the outer surface of the baffle stack. An outer chamber is defined between the inner surface of the outer housing and the outer surface of the baffle stack. Flow-directing structures are in the outer chamber and are arranged to direct gases into or out of the inner chamber.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: June 27, 2023
    Assignee: Sig Sauer, Inc.
    Inventor: Krzysztof J. Kras
  • Operating system for small caliber rifles
    Patent number: 10386137
    Abstract: A weapon system is provided. The weapon system includes a receiver and an operating group. The operating group includes a bolt at least partially housed within the receiver; an operating rod (op-rod) assembly arranged to axially translate within the bolt. The operating group also includes a carrier assembly, a bolt assembly, and a recoil assembly. The system further includes a hinge or pivot joint at a connection between the recoil assembly and the carrier assembly, a firing pin lock, an elastomeric cone interface between the bolt assembly and the receiver, a hollowed out piston, and/or tapering on the lug of the bolt assembly.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: August 20, 2019
    Assignee: Sig Sauer, Inc.
    Inventors: David Luke Steimke, Bryan Charles Dustin, Aaron C. Sakash
  • RIFLE BIPOD ASSEMBLY
    Publication number: 20230243614
    Abstract: A bipod assembly includes a first yoke configured to be attached to a firearm. A second yoke is pivotably attached to the first yoke. Right and left legs are pivotably connected to the second yoke and movable between an open position and a closed position. The bipod assembly is movable between a stowed and locked position, a stowed and unlocked position, a deployed and unlocked position, and a deployed and locked position. In a locked position, part of each leg engages the first yoke to maintain the leg's open or closed position as well as the leg's deployed or stowed position. The bipod assembly enables one-hand deployment from a stowed state.
    Type: Application
    Filed: January 31, 2023
    Publication date: August 3, 2023
    Applicant: Sig Sauer, Inc.
    Inventors: Tanner J. Landis, Andrew P. Loriot, Rich Curley, Christoper B. D'Alfonso, Zachary A. Amico
  • Operating system for small caliber rifles
    Patent number: 11022385
    Abstract: A weapon system is provided. The weapon system includes a receiver and an operating group. The operating group includes a bolt at least partially housed within the receiver; an operating rod (op-rod) assembly arranged to axially translate within the bolt. The operating group also includes a carrier assembly, a bolt assembly, and a recoil assembly. The system further includes a hinge or pivot joint at a connection between the recoil assembly and the carrier assembly, a firing pin lock, an elastomeric cone interface between the bolt assembly and the receiver, a hollowed out piston, and/or tapering on the lug of the bolt assembly.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: June 1, 2021
    Assignee: Sig Sauer, Inc.
    Inventors: David Luke Steimke, Bryan Charles Dustin, Aaron C. Sakash
  • FIREARM ACCESSORY ATTACHMENT CLAMP
    Publication number: 20170205201
    Abstract: A compound mounting clamp is described that is configured for mounting an accessory (e.g., a laser sight, a telescopic sight, a bayonet, a light) to a firearm that includes either one of a Picatinny-type mounting rail or an arcuate mounting rail. The compound mounting clamp includes a clamp base with mounting surfaces that enable mounting to either one of a Picatinny-type mounting rail or the arcuate mounting rail. The mounting surfaces of the clamp base include: (1) two planar faces that are perpendicular to a first direction; and (2) two angled faces that are: (a) at an oblique angle with respect to the first direction; and (b) disposed between the two planar faces.
    Type: Application
    Filed: January 9, 2017
    Publication date: July 20, 2017
    Applicant: Sig Sauer, Inc.
    Inventor: Robert E. Sheets, JR.
  • Firearm accessory attachment clamp
    Patent number: 10030940
    Abstract: A compound mounting clamp is described that is configured for mounting an accessory (e.g., a laser sight, a telescopic sight, a bayonet, a light) to a firearm that includes either one of a Picatinny-type mounting rail or an arcuate mounting rail. The compound mounting clamp includes a clamp base with mounting surfaces that enable mounting to either one of a Picatinny-type mounting rail or the arcuate mounting rail. The mounting surfaces of the clamp base include: (1) two planar faces that are perpendicular to a first direction; and (2) two angled faces that are: (a) at an oblique angle with respect to the first direction; and (b) disposed between the two planar faces.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: July 24, 2018
    Assignee: SIG SAUER, INC.
    Inventor: Robert E. Sheets, Jr.
  • Energy transfer indicator
    Patent number: 10288380
    Abstract: A system for indicating an energy transfer level having an optical sighting system and a mobile application running on a mobile device. The optical sighting system has an electronic, non-numeric performance indicator structured to provide a notification signal to a user. The mobile application is configured to receive a user input indicative of a desired terminal performance value for a projectile. The optical lighting system is configured to activate, when a predicted terminal performance value does not exceed the desired terminal performance value, an electronic, non-numeric performance indicator structured to provide a notification signal to a user. The electronic, non-numeric performance indicator may be an intermittently-displayed hold-over point indicator.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: May 14, 2019
    Assignee: Sig Sauer, Inc.
    Inventor: Andrew W. York
  • Ammunition magazine
    Patent number: 11287203
    Abstract: A detachable box magazine for firearms includes a hollow magazine tube extending longitudinally along a median plane. The magazine tube defines a single-stack portion extending substantially to an upper tube end that defines an upper tube opening. The magazine tube has a double-stack portion positioned below the single-stack portion and extending to a bottom tube end. For example, front portions of the opposite tube sidewalls have a stepped shape between the upper tube end and the double-stack portion, and the rear portions of the sidewalls have a linear taper between the upper tube end and the double-stack portion.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: March 29, 2022
    Assignee: Sig Sauer, Inc.
    Inventors: Adrian Thomele, Jason Knight, Scott D. Shinkle
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