Integral Wad Patents (Class 102/451)
  • Patent number: 11725915
    Abstract: Systems, methods and apparatus are provided through which in some implementations an ammunition cartridge includes a cartridge casing having a longitudinal center axis, a powder pocket positioned adjacent to the cartridge casing, a piston bore positioned adjacent to the powder pocket, a piston in the piston bore, and a payload bay positioned adjacent to the payload bay, wherein the piston is not coupled to the cartridge, wherein the piston is in contact with the payload bay wherein a diameter of the powder pocket is less than an inside diameter of the cartridge casing to provide a reduced velocity to the payload.
    Type: Grant
    Filed: July 11, 2022
    Date of Patent: August 15, 2023
    Inventor: James Dunnam
  • Patent number: 11719520
    Abstract: The present invention concerns a wadding system, in particular a specific wadding system dedicated to shot cartridges made of materials other than lead.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: August 8, 2023
    Assignee: FIOCCHI MUNIZIONI S.p.A.
    Inventor: Costantino Fiocchi
  • Patent number: 11614310
    Abstract: The present invention provides a metal injection molded ammunition cartridge comprising a metal injection molded bottom portion comprising a primer recess in communication with a primer flash hole that extends into a propellant chamber and a metal injection molded body extending form the metal injection molded bottom portion.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: March 28, 2023
    Assignee: True Velocity IP Holdings, LLC
    Inventor: Lonnie Burrow
  • Patent number: 11486681
    Abstract: A shotgun shell has a polymer wad with a forward shot cup portion and a rearward propellant cup, the wad in a casing, shot in the shot cup, propellant in the propellant cup, and a primer in a head of the casing. The propellant cup having a plurality of fins extending rearwardly that open to a deployed position upon firing and the shot cup having a plurality of circumferentially spaced axially aligned linear slit segments that permit air to circulate and permit expansion of the shot cup.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: November 1, 2022
    Assignee: Vista Outdoor Operations LLC
    Inventors: Adam J. Moser, Erik K. Carlson, Matthew S. Schroeder, Gary Hendrickson, Frank Gerzina
  • Patent number: 11385034
    Abstract: Systems, methods and apparatus are provided through which in some implementations an ammunition cartridge includes a cartridge casing having a longitudinal center axis, a powder pocket positioned adjacent to the cartridge casing, a piston bore positioned adjacent to the powder pocket, a piston in the piston bore, and a payload bay positioned adjacent to the payload bay, wherein the piston is not coupled to the cartridge, wherein the piston is in direct contact with the payload bay wherein a diameter of the powder pocket is less than an inside diameter of the cartridge casing to provide a reduced velocity to the payload.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: July 12, 2022
    Inventor: James Dunnam
  • Patent number: 11292608
    Abstract: An unmanned vehicle capable of operating in harsh environments is disclosed. The unmanned vehicle includes an aerial platform, a piloting system supported by the aerial platform, a medium source supported by the aerial platform, and a control system having a processor running computer executable code that actuates the medium source to emit a medium away from the aerial vehicle with an intensity sufficient to disorient a subject when the medium interacts with an exteroceptive sense of a subject.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: April 5, 2022
    Assignee: RPX Technologies, Inc.
    Inventors: Michael Fox, Matthew Dock, Jon Stewart
  • Patent number: 11199384
    Abstract: The present invention discloses a lightweight hybrid cartridge case (100) for a cartridged ammunition and a method of manufacture (200). The lightweight hybrid cartridge case (100) includes a cap (110) with a cylindrical sidewall (112) connected a base (120); a polymer shell (150) is insert-molded onto the sidewall of the cap; and an overmolded sleeve (180) is formed to cover the metal-polymer joint between the cap (110) and the polymer sleeve (150). The cylindrical sidewall (112) covered by the overmolded sleeve (180) has a plurality of stepped ridges (132, 132a), preferably with one stepped ridge (133) having a C-stepped edge (134).
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: December 14, 2021
    Inventors: Chun Kang Koh, Juan Kiat Quek, Su Shan Ng, Wen Jun Edwin Ang, Cheng Hok Aw
  • Patent number: 10935354
    Abstract: A shotgun shell has a polymer wad with a forward shot cup portion and a rearward propellant cup, the wad in a casing, shot in the shot cup, propellant in the propellant cup, and a primer in a head of the casing. The propellant cup having a plurality of fins extending rearwardly that open to a deployed position upon firing and the shot cup having a plurality of circumferentially spaced axially aligned linear slit segments that permit air to circulate and permit expansion of the shot cup.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: March 2, 2021
    Assignee: Vista Outdoor Operations LLC
    Inventors: Adam J. Moser, Erik K. Carlson, Matthew S. Schroeder, Gary Hendrickson, Frank Gerzina
  • Patent number: 10837744
    Abstract: A shot shell includes a cartridge (also referred herein as a ‘hull’), a primer, gunpowder, a tungsten propulsion system wadding, shot pellets having a first size, and shot pellets having a second size that is larger than the first size, and a 5-8 star crimp on an upper portion of the plastic cartridge. It has been found that there are advantages to loading smaller shot (preferably 3 shot or 4 shot) first, and then loading larger shot (preferably 1 shot or 2 shot) so that the larger shot leaves the cartridge first when the shot shell is fired. In a preferred embodiment, the cartridge contains 40% to 60% large shot, and the remainder of shot pellets in the cartridge is smaller shot. In an alternate embodiment, the large shot may be loaded first, and the smaller shot loaded last, so that the smaller shot leaves the shot shell first.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: November 17, 2020
    Inventor: Donald McIntosh
  • Patent number: 10766633
    Abstract: An unmanned vehicle capable of operating in harsh environments is disclosed. The unmanned vehicle includes an aerial platform, a piloting system supported by the aerial platform, a medium source supported by the aerial platform, and a control system having a processor running computer executable code that actuates the medium source to emit a medium away from the aerial vehicle with an intensity sufficient to disorient a subject when the medium interacts with an exteroceptive sense of a subject.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: September 8, 2020
    Assignee: RPX Technologies, Inc.
    Inventors: Michael Fox, Matthew Dock, Jon Stewart
  • Patent number: 10584947
    Abstract: A sub-projectile carrier which uses aerodynamic drag to delay the release of a payload in a tailorable manner to control the spread of the payload over a desired range. A 40 mm shotgun style cartridge is shown for use for counter unmanned aerial systems, and for short range anti-personnel applications.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: March 10, 2020
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: David Chalfant Manley, Thomas Michael Presutti, Jr.
  • Patent number: 10422610
    Abstract: Systems, methods and apparatus are provided through which in some implementations an ammunition cartridge includes a cartridge casing having a longitudinal center axis, a powder pocket positioned adjacent to the cartridge casing, a piston bore positioned adjacent to the powder pocket, a piston in the piston bore, and a payload bay positioned adjacent to the payload bay, wherein the piston is not coupled to the cartridge, wherein the piston is in direct contact with the payload bay wherein a diameter of the powder pocket is less than an inside diameter of the cartridge casing to provide a reduced velocity to the payload.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: September 24, 2019
    Inventor: James Dunnam
  • Patent number: 10422611
    Abstract: A shotgun shell has a polymer wad with a forward shot cup portion and a rearward propellant cup, the wad in a casing, shot in the shot cup, propellant in the propellant cup, and a primer in a head of the casing. The propellant cup having a plurality of fins extending rearwardly that open to a deployed position upon firing and the shot cup having a plurality of circumferentially spaced axially aligned linear slit segments that permit air to circulate and permit expansion of the shot cup.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: September 24, 2019
    Assignee: Vista Outdoor Operations LLC
    Inventors: Adam J. Moser, Erik K. Carlson, Matthew S. Schroeder, Gary Hendrickson, Frank Gerzina
  • Patent number: 10024638
    Abstract: Systems, methods and apparatus are provided through which in some implementations an ammunition cartridge includes a cartridge casing having a longitudinal center axis, a primer pocket positioned adjacent to the cartridge casing, a powder pocket positioned adjacent to the primer pocket, a piston bore positioned adjacent to the powder pocket, a piston in the piston bore, and a payload bay positioned adjacent to the payload bay, wherein the piston is not coupled to the cartridge, wherein the piston is in direct contact with the payload bay wherein a diameter of the powder pocket is less than an inside diameter of the cartridge casing to provide a reduced velocity to the payload.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: July 17, 2018
    Inventor: James Dunnam
  • Patent number: 9879957
    Abstract: A shotgun shell has a polymer wad with a forward shot cup portion and a rearward propellant cup, the wad in a casing, shot in the shot cup, propellant in the propellant cup, and a primer. The rearward propellant cup portion having enhanced fin deployment such that the shells are operative with shotguns with no chokes, shotguns with ported chokes, and shotguns with conventional chokes. The forward shot cup portion has axial slits that are sized to preclude shot from passing therethrough while providing sufficient air circulation to provide compaction relief of the shot pack. The enhancement may include gussets on the fins, axially movable disks to engage cam surfaces on the fins and urge them outwardly, and fins that have reduced bending regions compared to prior art wads.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: January 30, 2018
    Assignee: Vista Outdoor Operations LLC
    Inventors: Adam J. Moser, Erik K. Carlson, Matthew S. Schroeder, Gary Hendrickson, Frank Gerzina
  • Patent number: 9677347
    Abstract: A shock absorber (29) for downhole use comprises an elongate, hollow member defined by a series of mutually aligned, plastically deformable perforated members (38) having aligned perforations that define the hollowness of the elongate, hollow member that are spaced from one another in the direction of elongation by respective relatively rigid spacer members (39) that are secured to the perforated members. The elements of each pair of perforated members (38) of the series are so spaced from one another by one or more of the spacer members (39) such that on compression of the shock absorber (29) the perforated members (38) deform plastically to a lesser extent in regions at which the spacer members (39) are secured than at other regions. The arrangement of the perforated members (38) and the spacer members (39) causes compression to occur substantially parallel to the length of the shock absorber (29).
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: June 13, 2017
    Assignee: Reeves Wireline Technologies Limited
    Inventors: Simon Christopher Ash, Neill Gilhooley, Neil John Banton
  • Patent number: 9217627
    Abstract: A practice ammunition projectile has a projectile head with one or more sheets of plastic material, each having a plurality of frangible “bubble shaped” compartments containing liquid chemical components for optical and/or Infrared marking of a target upon impact. The sheets are preferably flexible sheets in the nature of a “bubble wrap” of the type used as padding for packaging. These so-called “matrix packages” are installed adjacent the inner surface of the shell forming the projectile head and provide stability when the compartments break up upon setback when the projectile is fired from a weapon.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: December 22, 2015
    Assignee: KMS CONSULTING, LLC
    Inventors: Kevin Michael Sullivan, Marcelo Eduardo Martinez
  • Patent number: 8800449
    Abstract: A wad or basewad for ammunition includes an ignition chamber. The ignition chamber can be integrally formed with the payload wad, basewad, or battery cup or can be attached to the payload wad, basewad, or battery cup. The ignition chamber communicates with a primer of the ammunition to receive and contain the primer blast for at least an initial period of time. This facilitates faster initial ignition of the propellant of the ammunition, and consequently allows higher performance levels to be achieved. Other advantages regarding other applications of this invention include cleaner burning loads, greater economy, and lower perceived recoil.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: August 12, 2014
    Assignee: RA Brands, L.L.C.
    Inventors: David K. Schluckebier, Kevin R. Cross, Ricky J. Buckmaster, Spencer D. Wildman
  • Patent number: 8555785
    Abstract: A wad for ammunition cartridges, including shotshell cartridges, includes a wad body having a series of separable fingers. A shot confinement tube is located within the wad body, surrounded by the separable fingers. The confinement tube extends longitudinally along the wad body and defines a recess in which an ammunition payload is received and is contained upon firing of the ammunition cartridge and as the wad is separated from the ammunition payload.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: October 15, 2013
    Assignee: RA Brands, L.L.C.
    Inventor: Kevin R. Cross
  • Patent number: 8220393
    Abstract: A wad or basewad for ammunition includes an ignition chamber. The ignition chamber can be integrally formed with the wad or basewad or can be attached to the wad or basewad. The ignition chamber communicates with a primer of the ammunition to receive and contain the primer blast for at least an initial period of time. This facilitates faster initial ignition of the propellant of the ammunition, and consequently allows higher performance levels to be achieved. Other advantages regarding other applications of this invention include cleaner burning loads, greater economy, and lower perceived recoil.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: July 17, 2012
    Assignee: RA Brands, L.L.C.
    Inventors: David B. Schluckebier, Kevin R. Cross, Ricky J. Buckmaster, Spencer D. Wildman
  • Publication number: 20100126371
    Abstract: An ammunition cartridge includes: a basewad disposed within a tube proximate the aft end of the tube; a projectile wad disposed within the tube proximate a fore end of the tube; a propellant charge disposed within a chamber formed between the projectile wad and the basewad; and a projectile disposed within the tube between a forward facing surface of the projectile wad and the fore end of the tube. The aft end of the projectile wad has a powder cup skirt formed thereon, and a chamfer is formed around an outer perimeter of a lip of the powder cup skirt. The chamfer allows the powder cup skirt to be slidably received within a skirt of the basewad to form the chamber. The chamfer provides a clearance at the powder cup skirt lip, which helps to insure undisturbed entry into the mouth of the basewad skirt.
    Type: Application
    Filed: December 19, 2006
    Publication date: May 27, 2010
    Inventor: Robert J. Gardner
  • Patent number: 7707942
    Abstract: An ammunition cartridge includes: a basewad disposed within a tube proximate the aft end of the tube; a projectile wad disposed within the tube proximate a fore end of the tube; a propellant charge disposed within a chamber formed between the projectile wad and the basewad; and a projectile disposed within the tube between a forward facing surface of the projectile wad and the fore end of the tube. The aft end of the projectile wad has a powder cup skirt formed thereon, and a chamfer is formed around an outer perimeter of a lip of the powder cup skirt. The chamfer allows the powder cup skirt to be slidably received within a skirt of the basewad to form the chamber. The chamfer provides a clearance at the powder cup skirt lip, which helps to insure undisturbed entry into the mouth of the basewad skirt.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: May 4, 2010
    Assignee: Olin Corporation
    Inventor: Robert J. Gardner
  • Patent number: 7481167
    Abstract: A high-pressure fixed munition for a low-pressure launching system having a cylindrical body with a centrally located bore is provided. The bore of the munition has a reduced diameter on the charge end in which a primer charge is positioned. The bore is filled above the primer charge with a propellant and above the propellant with a payload. The payload may include multiple buckshot pellets, frangible buckshot pellets, tear gas, multiple slugs, frangible slugs, paint balls, rubber pellets, bean bags, or the like. The munition may also include a pressure disk between the propellant and the payload, and tactile ridges or on the outside surface of the munition body or be of a specific color for purposes of identification of the payload.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: January 27, 2009
    Inventors: John Whitworth Engel, Kevin Dexter Dockery, Christopher Luchini
  • Patent number: 7150229
    Abstract: An ammunition cartridge includes: a basewad disposed within a tube proximate the aft end of the tube; a projectile wad disposed within the tube proximate a fore end of the tube; a propellant charge disposed within a chamber formed between the projectile wad and the basewad; and a projectile disposed within the tube between a forward facing surface of the projectile wad and the fore end of the tube. The aft end of the projectile wad has a powder cup skirt formed thereon, and a chamfer is formed around an outer perimeter of a lip of the powder cup skirt. The chamfer allows the powder cup skirt to be slidably received within a skirt of the basewad to form the chamber. The chamfer provides a clearance at the powder cup skirt lip, which helps to insure undisturbed entry into the mouth of the basewad skirt.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: December 19, 2006
    Assignee: Olin Corporation
    Inventor: Robert J. Gardner
  • Patent number: 6899034
    Abstract: A projectile is provided, in accordance with the present invention that includes a gas seal, a wad absorption zone, a core hull, a mass of projectile core particles within the hull and an actuator member. The hull is a cylindrical member having an open end and made from a material, such as soft plastic, that is characterized by the ability to peel back upon itself on impact, thereby releasing the mass of core particles after impact. The actuator, is releasably fixed to the hull open end, has an exterior side and an interior side and one or more stem members projecting into the mass of core particles. Upon impact, the actuator is released from the hull open end and continues to be propelled forward, along with the core particles. When the projectile impacts a target, the hull peels backward upon itself thereby releasing the actuator and the mass of projectile core particles.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: May 31, 2005
    Inventors: Charles H. Glover, Susan O. Hartley
  • Patent number: 6807908
    Abstract: A non-lethal projectile or a projectile for delivery of a substance (optional) has a tubular body casing (1) which surrounds a compartment (2) for containment of the substance. The compartment (2) coaxially supports a hollow tube (5) projecting forward within an ogival nose cap (8). An inflatable membrane (7) is located within the nose cap (8). On target impact the nose is displaced and permits a small amount of substance from compartment (2) to bleed through opening (6) allowing piston (4) to move forward uncovering ports (16). This action allows pressure gas to pass through the ports (16) and ducts to inflate the membrane (7). The piston is also free to move forward to discharge the substance through needle (5). The bag (7) thus expands rapidly and prevents excess penetration whilst spreading the impact energy over a wide area. The construction avoids the need for a charge to be contained within the projectile itself.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: October 26, 2004
    Inventor: Richard Ian Brydges-Price
  • Patent number: 6161482
    Abstract: The present invention is a multidisk shell and wad for use in a multidisk shell. The wad consists of a wad base, a cushioning section attached at a first end to a top section of the wad base, and at least three alignment arms attached to a second end of the cushioning section. The cushioning section is interposed between the projectile mass and the wad base. The preferred cushioning section comprises a hollow outer cylinder and at least one inner cylinder of polymeric plastic material. Thus, there are at least two concentric cylinders providing the cushioning between the disks and the expanding propellant charge. These at least two concentric cylinders and are attached at first ends to the top side of the wad base. The wad has at least three spatially separated alignment arms having proximal ends and distal ends for maintaining the alignment of projectiles as they travel through the gun barrel.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: December 19, 2000
    Inventor: George D. Clark
  • Patent number: 5979330
    Abstract: A shotshell wad for use in a shotgun shell is provided. Three discs are disposed within a generally cylindrical tubular wail, and define a gas seal section, a middle section, a shot cup extension section, and a shot cup section. The third disc, which separates the shot cup extension section and the shot cup section, is detachably connected to the tubular wall such that when the shotshell is fired, the third disc breaks away and travels rearward relative to the rest of the shotshell wad to a position adjacent to the second disc. A plurality of fingers are defined by a plurality of lateral cuts through the tubular wall in the shot cup section extending from a point in the shot cup section to the forward end of the tubular wall. The tubular wall also includes a plurality of circumferential cuts passing therethrough substantially at the point where the plurality of lateral cuts terminate. The plurality of circumferential cuts extending through a section of each of the plurality of fingers.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: November 9, 1999
    Inventor: John S. Cornell
  • Patent number: 5792979
    Abstract: Two-element wad with pneumatic damping designed for the cartridge industry formed by two interchangeable elements connected to each other and which consist of a case and a damper-shutter. The case incorporates a series of foldable flaps and a valve that regulates the damping and injects air. Both the case and the damper-shutter have crosssectional walls and a convexo-concave shape that can absorb radial deformations to the symmetry axis of the wad. The damper-shutter has a four-fold action: it withstands the flexion and deformation of the material, the friction against the walls, and the compression of the air contained in the damper-shutter.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: August 11, 1998
    Inventor: Pedro Diaz Pietro
  • Patent number: 5623118
    Abstract: A shot shell wad may comprise a powder cup and a shot cup connected by first and second shot cup support members positioned in spaced apart relation. Both the first and second shot cup support members include deformable leg sections. A stabilizing member having a proximal end and a distal end is positioned between the first shot cup support member and the second shot cup support member. The proximal end of the stabilizing member is connected to the powder cup and the distal end of the stabilizing member is connected to the first and second shot cup support members by respective first and second transverse members.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: April 22, 1997
    Assignee: Windjammer Tournament Wads, Inc.
    Inventor: John W. Jackson
  • Patent number: 5429054
    Abstract: A tracer wad for a cartridge comprises a shot holder consisting of four quadrants defining between them a tubular member, a tracer element holder and a conical recess leading to a bore for directing ignited propellant onto a tracer element held in the holder to ensure reliable ignition of the tracer element on firing of the cartridge. A flexible skirt portion ensures a good gas seal between the wad and the barrel of a firearm when the cartridge is fired. When the wad leaves the barrel, the quadrants are peeled back and the tracer element leaves the holder to follow the trajectory of the shot.
    Type: Grant
    Filed: February 18, 1993
    Date of Patent: July 4, 1995
    Inventor: Richard E. Topping
  • Patent number: 5361701
    Abstract: A plastic cartridge has a base with a primer pocket and a primer mounted therein. A propellant charge is located within the cartridge and a plastic, collapsible wad is positioned within the cartridge above the propellant charge. A strawlike fusing channel extends through the wad into the propellant charge and is packed with an igniter charge. The fusing channel communicates between the propellant charge and a tracer charge packed within a cavity in a lead shotgun slug. The wad has a plurality of upwardly extending petals which surround the slug within the cartridge and which engage with the rifling of a shotgun barrel when the round is fired.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: November 8, 1994
    Inventor: Robert D. Stevens
  • Patent number: 5347932
    Abstract: The invention uses a pair of curved opposed diagonal bars between the wad and cup. The bars (deformable resistance members) buckle in the radial direction and end up basically flat between the wad and cup to give surprisingly and unexpectedly high amounts of collapse (80% or more). This allows the space between wad and cup to be decreased significantly without sacrificing cushioning.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: September 20, 1994
    Assignee: Olin Corporation
    Inventors: Robert J. Gardner, Morris C. Buenemann, Jr.
  • Patent number: 4773329
    Abstract: An improved composite wad structure has a unique laminated shot pocket portion. The wad structure is useful in a shotshell with hard shot pellets, such as steel or tungsten shot, having a hardness generally at least equal to that of the barrel of a gun in which the shotshell is to be fired. The laminated shot pocket portion includes a thin-walled, cup-shaped inner liner for supporting a column of the hard shot and thick-walled, cup-shaped outer tubular body encompassing the inner liner. The inner liner is formed of a tough, high tensile strength material capable of withstanding compressive forces generated by acceleration of the hard shot, when the shotshell containing the wad structure is fired in the barrel of the gun, so as to protect the gun barrel from being scored by the hard shot. The outer body is formed of a soft, low tensile strength material capable of expanding to obturate the combustion gases produced in the gun barrel when the shotshell is fired.
    Type: Grant
    Filed: January 20, 1987
    Date of Patent: September 27, 1988
    Assignee: Olin Corporation
    Inventor: Stephen J Bilsbury
  • Patent number: 4760793
    Abstract: Shot shell having a stratified payload of at least two different shot sizes, the larger diameter shot being closer to the mouth of the shell than the smaller diameter shot.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: August 2, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Edward I. Herring, III
  • Patent number: 4574701
    Abstract: An improved wad and shot cup structure for shotgun shells or so-called shot shell cartridges for hunting and shooting use, including a substantially cylindrical body of plastic material forming a shot cup or bowl (7) containing lead shot (11) and a powder seal cup (17) for confining the firing charge, the shot cup and powder seal cup being connected by a cushioning structure (6). The latter includes disc-shaped elements or so-called tiles (9) of diameter such that, if flattened as caused by the thrust of the firing charge, it is substantially greater than the inner diameter of the gun barrel. The tiles are connected and separated by walls (10) by which the force is ultimately transferred from the powder seal cup to the shot cup, the tiles providing sealing against leakage of explosion gases and contributing to the cushioning effect of the cushioning structure, which constitutes a wad.
    Type: Grant
    Filed: October 11, 1983
    Date of Patent: March 11, 1986
    Assignee: Fiocchi Munizioni Spa
    Inventor: Pino Fiocchi
  • Patent number: 4295426
    Abstract: A deformable plastic wad for shot cartridges for hunting and shooting inces a reticular cushioning structure symmetric with respect to the axis of the wad, including portions located on planes parallel and portions located on planes perpendicular to the axis, the first mentioned portions being adapted to resist axial loads and the second mentioned portions being adapted to bend in two opposite directions, at least some of the first mentioned portions being symmetrically located in the vicinity of opposite edges of the second mentioned portions.
    Type: Grant
    Filed: March 20, 1979
    Date of Patent: October 20, 1981
    Assignee: Snia Viscosa Societa Nazionale Industria Applicazioni Viscosa S.p.A.
    Inventors: Vito Genco, Vincenzo L. Turco