Patents by Inventor John M. Liska, Jr.

John M. Liska, Jr. 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).

  • Bow energy transfer system and method
    Patent number: 8656900
    Abstract: A bow energy transfer system includes a pair of helically wound springs positioned on the bowstrings on either side of the bowstring nock point; the springs are secured to the bowstring with a serving thread wound between the individual coils into contact with the bowstring. The springs flex perpendicular to their longitudinal axes during discharge of the bow causing energy to temporarily be stored in the flexed spring to be returned to the arrow or bolt later in its discharge.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: February 25, 2014
    Assignee: Precision Shooting Equipment, Inc.
    Inventors: David H. Kronengold, Allen C. Rasor, Jr., Kevin L. Hansen, Ronald C. Grimes, John M. Liska, Jr.