Patents by Inventor Robert S. Carrizosa

Robert S. Carrizosa 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: 5257809
    Abstract: A broadhead arrow having mechanical structure that improves the rotational freedom of the broadhead portion to prolong rotation during penetration of a target. The mechanical structure further includes an arrow tip, formed as a fluted arrow tip structure, that initiates target penetration by producing drill bit-like action upon rotationally contacting a target. The fluted arrow tip is followed by the bladed, rotatably free, broadhead portion having a plurality of elongated blades that are formed having a sharp, edged, concave upper body structure, contoured for cutting and discarding, in a plow-like manner, any target material, such as flesh and bone material encountered during rotary penetration of a target.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: November 2, 1993
    Inventor: Robert S. Carrizosa