Patents by Inventor Rolf Holl

Rolf Holl 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: 5340058
    Abstract: A projectile, particularly a kinetic energy projectile, whose nose cone is cooled due to the provision of an ablation layer and a thermal insulation layer (8, 9) on the exterior of the metal hood (4) of the projectile nose cone, and due to a highly thermally conductive medium in the spaces (5, 6) between the hood (4) and the payload (3) particularly a penetrator, of the projectile.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: August 23, 1994
    Assignee: Rheinmetall GmbH
    Inventors: Rolf Holl, Rudolf Rombach, Karl-Heinz Roosmann
  • Patent number: 5289777
    Abstract: A subcaliber kinetic energy projectile (1) including a penetrator (2) and a segmented sabot (3) which is provided with a front support (4) and with a second support (5) that is disposed at an axial distance behind the first support, with the second support (5) including a rotationally symmetrical air pocket (6) that faces the first support (4) and the first support (4) is provided with air passage openings (43, 44, 45).In the sabot, the relationship of L/D.gtoreq.1.2 exists between the length L of the penetrator tip (8) ahead of the first support (4) and the caliber D. The relationship x.gtoreq.0.45 * .iota. further applies between the distances x and .iota., with x being the distance between the trailing edge (10) of the sabot and the base surface (11) of the air pocket (6) in the second support (5) and .iota. being the distance between the trailing edge (10) of the sabot (3) and the leading edge (12) of the sabot at the surface of the penetrator (2).
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: March 1, 1994
    Assignee: Rheinmetall GmbH
    Inventors: Achim Sippel, Heinz-Josef Kruse, Walter Klumpp, Jurgen Bocker, Jurgen Meyer, Michael Geis, Rolf Holl
  • Patent number: 5003886
    Abstract: A sabot-projectile arrangement adapted for being ejected from a gun barrel for the purpose of combatting actively and passively reacting armor. The arrangement comprises first and second projectiles, each having a different coefficient of air resistance (c.sub.w). A discarding sabot is comprised of segments which define a receptacle for accommodating the first and second projectiles with their longitudinal axes flush behind one another in order to follow one another in a spaced relationship on a common trajectory when the sabot-projectile arrangement is fired from a gun. Form locking means defines a form locking connection between the receptacle and each of the projectiles. The form locking connection existing between the leading first projectile disposed in the receptacle and the segments of the sabot are released earlier than when the segments are separated from the second projectile after the sabot-projectile arrangement leaves the gun barrel.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: April 2, 1991
    Assignee: Rheinmetall GmbH
    Inventors: Klaus-Dieter Pahnke, Rolf Holl, Wilfried Becker