Patents by Inventor John W. Sigler

John W. Sigler 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: 5827958
    Abstract: There is provided a velocity measuring system contained on-board a projectile. The velocity is determined by a microprocessor on-board said projectile that bases the computation on a measurement of the time required for the projectile to pass two fixed points along the gun barrel. The fixed points may be passive signal sources that do not require an external power supply. A high degree of velocity accuracy is achieved because the microprocessor calculation need not be completed during the projectile's traversal of the gun barrel.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: October 27, 1998
    Assignee: Primex Technologies, Inc.
    Inventor: John W. Sigler
  • Patent number: 5796031
    Abstract: A multi-flechette weapon packing for a flechette holding canister has one set of fin back flechettes, each having a tip end and a fin end with a plurality of integral fins at the fin end and a plurality of fin forward flechettes, each having a tip end and an opposite end and a plurality of integral fins offset from the opposite end toward the tip end. The fin back flechettes and fin forward flechettes are located in the canister and adjacent to each other in an alternating fashion with the tip ends aligned in the same direction to increase packing density.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: August 18, 1998
    Assignee: Primex Technologies, Inc.
    Inventor: John W. Sigler
  • Patent number: 5542354
    Abstract: A segmenting warhead projectile has a fore section integral with an aft section. A mid section is disposed between the fore section and the aft section. Up range of a target, an explosive contained within the mid section is detonated separating the fore section from the aft section. When a desired separation distance is achieved, explosives contained within the fore and aft sections detonate, fragmenting the housing of the sections. The fragmentation patterns of the two sections overlap, providing a high dispersion of fragmentation segments along the line of flight compensating for range errors.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: August 6, 1996
    Assignee: Olin Corporation
    Inventor: John W. Sigler
  • Patent number: 5323708
    Abstract: A clip-lock cap for protecting saboted projectiles or penetrators. This cap is formed of several independent segments held together by mechanical clips, the latter being designed to be released from the segments and thus allow dispersal of the segments only when the combined penetrator and cap is exposed to high axial acceleration. It will be understood that because the cap separation from the projectile is achieved through mechanical means, the cap segments can be designed to be as rugged as required to meet rough handling loads and environmental requirements without affecting the reliability or repeatability of the discard process and irrespective of segment material, environmental conditions or projectile spin rate.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: June 28, 1994
    Assignee: Aerojet-General Corporation
    Inventor: John W. Sigler