Patents by Inventor Siegmar Fischer

Siegmar Fischer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6827020
    Abstract: A spin-stabilized projectile has a projectile body and a guide band being circumferentially mounted on an outer face of the projectile body. The guide band includes a plurality of axially adjoining partial guide bands. One of the partial guide bands is a first partial guide band made of copper, a copper alloy or another soft metal. One of the partial guide bands is a second partial guide band made of soft iron and axially adjoining the first partial guide band. A total axial length of all second partial guide bands is between 5% and 50% of the total axial length of the guide band.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: December 7, 2004
    Assignee: Rheinmetall W & M GmbH
    Inventors: Siegmar Fischer, Ernst-Wilhelm Altenau, Ralf Aumund-Kopp, Gunter Sikorski
  • Publication number: 20030145757
    Abstract: A spin-stabilized projectile has a projectile body and a guide band being circumferentially mounted on an outer face of the projectile body. The guide band includes a plurality of axially adjoining partial guide bands. One of the partial guide bands is a first partial guide band made of copper, a copper alloy or another soft metal. One of the partial guide bands is a second partial guide band made of soft iron and axially adjoining the first partial guide band. A total axial length of all second partial guide bands is between 5% and 50% of the total axial length of the guide band.
    Type: Application
    Filed: February 10, 2003
    Publication date: August 7, 2003
    Applicant: Rheinmetall W & M GmbH
    Inventors: Siegmar Fischer, Ernst-Wilhelm Altenau, Ralf Aumund-Kopp, Gunter Sikorski
  • Patent number: 6536353
    Abstract: A spin-stabilized projectile has a projectile body and a guide band being circumferentially mounted on an outer face of the projectile body. The guide band includes a plurality of axially adjoining partial guide bands. One of the partial guide bands is a first partial guide band made of copper, a copper alloy or another soft metal. One of the partial guide bands is a second partial guide band made of soft iron and axially adjoining the first partial guide band. A total axial length of all second partial guide bands is between 5% and 50% of the total axial length of the guide band.
    Type: Grant
    Filed: April 21, 1999
    Date of Patent: March 25, 2003
    Assignee: Rheinmetall W & M GmbH
    Inventors: Siegmar Fischer, Ernst-Wilhelm Altenau, Ralf Aumund-Kopp, Günter Sikorski
  • Patent number: 6237497
    Abstract: A spin-stabilized projectile adapted to be fired from a weapon barrel, includes a projectile body having a length dimension, a rear length portion, an ogive-shaped front length portion and an intermediate length portion situated between the rear and front length portions; a metal guide band circumferentially mounted on the projectile body; and an undercut provided circumferentially in the intermediate length portion to define an annular chamber with an inner surface of the weapon barrel during travel of the projectile in the weapon barrel upon firing for effecting a pressure equalization of propellant gases flowing past the metal guide band to center the projectile within the weapon barrel.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: May 29, 2001
    Assignee: Rheinmetall W & M GmbH
    Inventors: Ernst-Wilhelm Altenau, Siegmar Fischer, Günter Sikorski, Ralf Aumund-Kopp, Margret Klütsch
  • Patent number: 6158349
    Abstract: A gas generator adapted to be disposed in a rear part of a projectile for increasing the flight range thereof, includes a housing defining a combustion chamber and having a bottom and a longitudinal axis; a fuel accommodated in the combustion chamber; an outlet opening provided in the housing bottom for passage of combustion gases generated in the combustion chamber upon combustion of the fuel; and a plastic fuel-supporting tube extending axially from the outlet opening into the combustion chamber. The plastic material of the fuel-supporting tube is selected such that upon combustion of the fuel aided by a gas pressure of a projectile propellant and by a drag effect, the fuel-supporting tube is deformed and driven out of the outlet opening.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: December 12, 2000
    Assignee: Rheinmetall W & M GmbH
    Inventors: Ernst-Wilhelm Altenau, Siegmar Fischer, Gunter Sikorski, Ulf Hahn
  • Patent number: 5090326
    Abstract: A lightweight training bomblet provided with a housing made of cardboard or plastic. Such training bomblet should be easily assembled and be able to withstand the high acceleration forces generated during transport into a target area. To prevent undue deformations of the bomblet housings made, for example, of cardboard, during air transport and the resulting premature ignition during ejection from a carrier projectile, both cardboard or plastic housing covers are connected with one another by means of a pre-tensioned connecting arrangement and their abutment faces are pressed against the end faces of a tubular housing shell, with the abutment faces of the housing covers possibly additionally containing a holding and sealing arrangement which is pressed into or against the end faces of the housing shell.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: February 25, 1992
    Assignee: Rheinmetall GmbH
    Inventors: Ernst-Wilhelm Altenau, Ulf Hahn, Siegmar Fischer, Margret Palten
  • Patent number: 5076171
    Abstract: A bomblet carrier projectile for delivering training bomblets to a target area. A plurality of training bomblets are supported in layers within the projectile body, with each training bomblet having a housing made of at least one of paper and plastic. A plurality of supporting elements are disposed within the projectile body and stackable in the axial direction of the projectile body for supporting the training bomblet housings in the layers. A detonator is arranged in a frontal region of the projectile body. A gas passage channel is formed along the longitudinal axis of the projectile body. An ejector unit is disposed behind the detonator and includes an ejection charge for emitting ignition gases when ignited by the detonator that are passed through the gas passage channel for igniting the training bomblets and an ejection plate for ejecting the training bomblets from the projectile body, over a target area, in response to pressure generated by the ignition gases.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: December 31, 1991
    Assignee: Rheinmetall GmbH
    Inventors: Ernst-Wilhelm Altenau, Siegmar Fischer, Margret Palten
  • Patent number: 5042389
    Abstract: A large-caliber carrier projectile for transporting a payload, with the projectile including an ejection charge and an ejector plate for ejecting the payload from the carrier projectile over a target area. To overcome the problem of the ejector plate colliding with individual bomblets of the payload, and thus causing considerable interference with proper functioning or premature detonations in the air, the ejector plate is an eccentric center of gravity. Alternatively, the ejector plate may be segmented and composed of at least two separable parts which are separated by the action of centrifugal force after ejection from the carrier projectile.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: August 27, 1991
    Assignee: Rheinmetall GmbH
    Inventors: Udo Sabranski, Wolfgang Hoffmann, Siegmar Fischer, Gunter Sikorski, Ulrich Theis, Joachim Fiebrich, Lutz Borngen, Ulf Hahn
  • Patent number: 4930420
    Abstract: A projectile includes a propellant charge and a nozzle opening provided in a rear projectile part and serving as an exit for propellant charge gases during flight of the projectile; a resilient rupturnable rubber or plastic sealing disc closing the nozzle opening for protection against environmental influences.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: June 5, 1990
    Assignee: Rheinmetall GmbH
    Inventors: Wolfgang Meffert, Kalr-Heinz Silligmann, Siegmar Fischer, Ulf Hahn
  • Patent number: 4727812
    Abstract: A payload projectile including a carrier body having an ogival region in which a receptacle for an ejection charge is provided. A perforated disc is seated immediately in front of the receptacle and a lifting ring screw closes an opening in the carrier body at the forward tip of the ogival region. A chamber, reserved for an igniter, is defined between a rear face of the screw and a front face of the disc and has radial dimensions wider than those of the seat of the disc so that the disc is movable forwardly toward the screw peripherally unimpeded in the chamber.
    Type: Grant
    Filed: May 12, 1987
    Date of Patent: March 1, 1988
    Assignee: Rheinmetall GmbH
    Inventors: Siegmar Fischer, Gunter Sikorski
  • Patent number: 4043268
    Abstract: A segmented ejectable payload container is arranged to provide improved protection against axial separation of its segments during the firing operation. The container is formed as a hollow shell, with its outer jacket formed integral with a bottom end plate whose outer surface is recessed to receive an outwardly extending flange of an inner container jacket. The other end of the opposed jackets is removably closed by means of a threaded end plate. A second flange on the inner jacket is received in a corresponding recess of the second end plate when such end plate is in operative position. The interfaces between the flanges on the inner jackets and the recesses in the respective end plates are closed by means of a radially disposed seal. The depth of such recesses is chosen so that the outer surface of each end plate projects beyond the adjacent surface of the associated flange.
    Type: Grant
    Filed: June 2, 1976
    Date of Patent: August 23, 1977
    Assignee: Rheinmetall GmbH
    Inventors: Siegmar Fischer, Dietmar Karius, Guenter Sikorski
  • Patent number: 4023495
    Abstract: An improved twist brake for the separable payload of a twist or spin-stabilized flare or smoke projectile is described. A pair of pivotable wings, secured at one end to a portion of a central shaft of the payload, is normally engaged by the inner surface of a guide shoe which prevents contact of the wing with the separable housing of the payload. Cooperable projections and slots on the guide shoe and the central support shaft prevent substantial axial and circumferential movement of the shoe, while permitting outward movement of the wings and the guide shoes when the payload separates from the housing. During such separation, the guide shoe is also separated from the wings so that the latter can pivot to their maximum extent to provide an optimum rotational braking action on the payload.
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: May 17, 1977
    Assignee: Rheinmetall G.m.b.H.
    Inventors: Siegmar Fischer, Karl-Heinz Silligmann, Juergen Prochnow