Patents by Inventor Dennis Lagerquist

Dennis Lagerquist 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: 8616127
    Abstract: A safety and arming apparatus for use with a projectile includes a rotor pivotable between a safe position and an armed position. A biasing element holds a mass engaged with the rotor to restrain the rotor from rotation and is deformable to allow the mass to displace and disengage from the rotor in response to a setback force on the projectile. A second biasing element includes a displaceable end for engaging with the rotor to restrain the rotor from rotation and is deformable to disengage the displaceable end from the rotor in response to projectile spin. A piston actuator can rotate the rotor to the armed position if the mass is disengaged and the displaceable end is disengaged. A detonator on the rotor can be aligned with a detonation cord when the rotor is in the armed position and unaligned when the rotor is in the safe position.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: December 31, 2013
    Assignee: Alliant Techsystems Inc.
    Inventors: Hossein Aliaghai, Kristen L. Gerzina, Dennis Lagerquist
  • Patent number: 8291825
    Abstract: A safety and arming apparatus for use with a projectile includes a rotor pivotable between a safe position and an armed position. A biasing element holds a mass engaged with the rotor to restrain the rotor from rotation and is deformable to allow the mass to displace and disengage from the rotor in response to a setback force on the projectile. A second biasing element includes a displaceable end for engaging with the rotor to restrain the rotor from rotation and is deformable to disengage the displaceable end from the rotor in response to projectile spin. A piston actuator can rotate the rotor to the armed position if the mass is disengaged and the displaceable end is disengaged. A detonator on the rotor can be aligned with a detonation cord when the rotor is in the armed position and unaligned when the rotor is in the safe position.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: October 23, 2012
    Assignee: Alliant Techsystems Inc.
    Inventors: Hossein Aliaghai, Kristen L. Gerzina, Dennis Lagerquist
  • Publication number: 20110056401
    Abstract: A safety and arming apparatus for use with a projectile includes a rotor pivotable between a safe position and an armed position. A biasing element holds a mass engaged with the rotor to restrain the rotor from rotation and is deformable to allow the mass to displace and disengage from the rotor in response to a setback force on the projectile. A second biasing element includes a displaceable end for engaging with the rotor to restrain the rotor from rotation and is deformable to disengage the displaceable end from the rotor in response to projectile spin. A piston actuator can rotate the rotor to the armed position if the mass is disengaged and the displaceable end is disengaged. A detonator on the rotor can be aligned with a detonation cord when the rotor is in the armed position and unaligned when the rotor is in the safe position.
    Type: Application
    Filed: September 10, 2009
    Publication date: March 10, 2011
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Hossein Aliaghai, Kristen L. Gerzina, Dennis Lagerquist