Patents by Inventor David J. Toupin

David J. Toupin 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).

  • Rapidly adjustable gunsight
    Patent number: 4977676
    Abstract: A gunsight rapidly adjustable in elevation comprises a body adapted for mounting on a projectile weapon, an elongated sight leaf pivoted at one end on the body, the other end of the sight leaf carrying a sighting aperture, an arcuate toothed rack coupled to the sight leaf at its pivoted end, spring loaded detent means engaging the arcuate toothed rack to hold the sight leaf in a preselected position, and an adjusting lever, fixed at one end to the pivoted end of the sight leaf for adjusting the sight leaf in elevation.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: December 18, 1990
    Inventor: David J. Toupin