Patents Assigned to J & S R.D.T. Archery
  • Crossbow
    Patent number: 7363921
    Abstract: A crossbow having an increased powerstroke and reduced noise. The powerstroke is increased by inverting the limb orientation from the standard crossbow arrangement and locating string guides at least partially forward and rearward of the ends of the limbs. The bowstring is drawn from the tops of the string guides to maximize the powerstroke, reducing noise and increasing the retained and delivered energy over existing crossbows.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: April 29, 2008
    Assignee: J & S R.D.T. Archery
    Inventor: James J. Kempf