Patents by Inventor Donald G. Topping

Donald G. Topping 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: 4592332
    Abstract: An arrow rest including, a support plate detachably connected to one end of a non-circular rod slidable longitudinally in a non-circular bore in a body member mounted in a bow handle, a coil spring biasing the rod and arrow rest outward from one side of the bow handle, a first threadedly adjustable screw member in the body having a one way connection with the rod variably limiting the outward movement of the arrow rest under the spring bias and a second screw member threadedly adjustable in said first adjustable screw member having an operative connection with one end of the coil spring for varying the bias on the rod and arrow rest whereby either the position of the arrow rest or the spring biasing force acting thereon may be adjusted without affecting the adjustment of the other.
    Type: Grant
    Filed: April 23, 1984
    Date of Patent: June 3, 1986
    Inventor: Donald G. Topping
  • Patent number: 4553522
    Abstract: A device for resiliently mounting a pair of stabilizer rods for universal angular adjustment on a bow has a central member fixed to the bow and having a cylindrical portion projecting from each end, a pair of intermediate members each has a bore in one end receiving a cylindrical portion for rotation thereon and an axial slot bifercating it's other end, and a pair of outer end members each having a flat sided portion projecting from one end entering a slot and rotatable on a screw passing transversely through the bifercated end portions and the flat sided projection and threadedly engaged in one bifercated portion so as to prevent rotation when tightened; each of the outer end members having means at the other end for attachment of a stabilizer rod.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: November 19, 1985
    Inventor: Donald G. Topping