Screw Patents (Class 89/19)
  • Patent number: 8397616
    Abstract: A tube weapon comprises a weapon tube arranged in an exchangeable fashion using screw thread at a breech block of the tube weapon, and a cradle tube in which the weapon tube is axially and displaceably positioned. Despite using screw thread for connecting the weapon tube with the breech end, prevention of axial, and preferably also radial play, are assured, whereby the weapon tube is removable via a cradle tube in front of the breech block. The weapon tube is pre-loaded in the stress direction, which occurs with firing stress, by a screw thread ring arranged in front at the breech block. The screw thread ring encircles the weapon tube and is preferably partially screwed in detachable fashion into the anterior end of the breech block, and efficiently supports itself, axially, with its anterior end located against a collar of the weapon tube.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: March 19, 2013
    Assignee: Rheinmentall Waffe Munition GmbH
    Inventors: Heiner Schmees, Ralf-Joachim Herrmann
  • Patent number: 8272307
    Abstract: A breech-loaded weapon may include a carrier at its breech end. The carrier may include a breech block support. A screw block may be rotatable on the breech block support of the carrier. The carrier may include a supporting protuberance and the screw block may include a supporting projection having an undercut portion. A spring-loaded plunger may be disposed on the carrier and a plunger recess may be defined in the screw block. In a retained position of the screw block, the undercut portion of the supporting projection may engage the supporting protuberance of the carrier and the spring-loaded plunger may engage the plunger recess.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: September 25, 2012
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Edward W. Holmes, Wayland P. Barber, Leslie C. Blahut
  • Patent number: 7878107
    Abstract: A locking and recocking assembly with swivel breech-lock and rotating locking head particularly designed for inertially-actuated weapons, which combines in a single assembly all the functions for locking, opening, case ejection and recocking with locking return, required for correct operation of the weapon; those functions were, until now assigned to various components variously assembled on the weapon. The locking and recocking assembly with swivel breech-lock and rotating locking head has the entire mass, required for inertial operation, concentrated in the swivel breech-lock, which is accommodated completely within the supporting structure of the weapon, such as the sheath or barrel extension or breech of the weapon. All this leads to better balancing and stability of the weapon, higher reliability in operation, greater constructive simplicity and ease of assembly and disassembly.
    Type: Grant
    Filed: July 8, 2008
    Date of Patent: February 1, 2011
    Assignee: Benelli Armi, S.p.A.
    Inventor: Luigi Moretti
  • Patent number: 7814694
    Abstract: A muzzle loading firearm has a barrel with a bore on a bore axis, and the barrel has a muzzle end and a breech end. A frame is connected to the barrel, and has a breech face. The frame moves between an open position in which the breech face is away from the breech end of the barrel, and a closed position in which the breech face abuts the breech end of the barrel. A breech plug is removably attached to the barrel. The breech plug including a seal element closely received by the bore. The seal element may be a set of piston rings that are received in a circumferential groove about a forward end of the plug, or may be a cup at the forward end, with a forward rim that flares under pressure to provide a gas seal.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: October 19, 2010
    Assignee: Thompson Center Arms Company, Inc.
    Inventors: Mark C. Laney, Gene L. Garland
  • GUN
    Publication number: 20040020352
    Abstract: A gun whose barrel (2′) is connected to a breech ring (16), and is seated to be displaced in a cradle barrel (3). To prevent a lifting effect of the barrel (2′) inside the cradle barrel (3) upon firing, a slide-bushing bearing is disposed on at least the muzzle side of the barrel (2′). The bearing encompasses a barrel bushing (7′), in which the barrel (2′) is disposed free from any lifting effect, and whose outside surface (8) slides in a form-fit (i.e., with the smallest possible amount of play) in the cradle barrel (3), so that the barrel (2′) is independently guided to slide both axially and radially. The radial sliding guidance of the barrel (2′) during firing is effected by tab-shaped protrusions (10′), which extend into corresponding, groove-shaped recesses (9′) of the barrel bushing (7′) and hold the barrel (2′) in the center of the barrel bushing (7′).
    Type: Application
    Filed: April 16, 2003
    Publication date: February 5, 2004
    Applicant: Rheinmetall W & M GmbH
    Inventors: Friedhelm Knorich, Berthold Baumann