Patents by Inventor Jurgen Leeker

Jurgen Leeker 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: 5481981
    Abstract: A sabot for a subcaliber projectile, preferably an arrow projectile, having an essentially cylindrical guide gage (8) of a lightweight material and a tail-side drive element (14) detachably connected thereto for tail-side support of the projectile body (1). The guide cage (8) has a radially inwardly-extending support wall (12) for supporting a projectile body (1) disposed therein in its forward to central region, and the drive element is a propelling disk (14) that is received by a circumferential or annular groove (13) in the tail region of the guide cage (8), which is segmented in the axial direction of the projectile body (1). As a result, a further reduction in weight can be accomplished with simpler fragmenting of the sabot that practically does not impair the projectile at all.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: January 9, 1996
    Assignee: Rheinmetall GmbH
    Inventors: Achim Sippel, Thomas Heitmann, Willhelm Becker, Klaus Unterstein, Jurgen Leeker, Walter Simon
  • Patent number: 5477786
    Abstract: A subcaliber arrow projectile includes a projectile body which has a rearwardly widening, conical projectile tip having a forward point and a rearward base, whose caliber corresponds to the projectile caliber. The projectile body further has a rearwardly widening, resistance-stabilizing conical rear part immediately adjoining the base of the projectile tip. The rear part has an enlarged caliber which is greater than the projectile caliber.
    Type: Grant
    Filed: September 7, 1994
    Date of Patent: December 26, 1995
    Assignee: Rheinmetall GmbH
    Inventors: Jurgen Leeker, Klaus Unterstein, Wilhelm Becker
  • Patent number: 4911080
    Abstract: A practice projectile has a cylindrical casing having front and rear portions; a bottom section attached to the rear portion of the cylindrical casing; a frontal nose section including at least two subcomponents which have front and rear portions. The subcomponents can assume a closed position in which the projectile has an external configuration identical to that of a live projectile having the same caliber and an open position in which the subcomponents are in a spread-apart state at a given opening angle. The rear portion of the subcomponents is pivotally connected to the front portion of the cylindrical casing. There is further provided a device for holding the subcomponents together in the closed position prior to firing the projectile. The holding device is arranged to be overcome by centrifugal forces derived from a projectile spin subsequent to firing, to thereafter allow the subcomponents to assume the open position.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: March 27, 1990
    Assignee: Rheinmetall GmbH
    Inventors: Jurgen Leeker, Rudolf Rombach
  • Patent number: 4195573
    Abstract: A limited range, supersonic, sub-caliber projectile having a main body and a resistance-stabilizing tail section. This tail section has at least two bores through which air passes during flight of the projectile. The axes of the bores may be parallel or inclined relative to the longitudinal axis of the main body of the projectile.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: April 1, 1980
    Assignee: Rheinmetall GmbH
    Inventors: Jurgen Leeker, Hanjorg Becker, Rudolf Rombach