Patents by Inventor David Bowlsby

David Bowlsby 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: 5697537
    Abstract: A bow holder which can attach to any hunter's waist either through belt loops or by tucking behind the belt or inside the waistband of the hunter's pants. The bow holder is built on a stabilizing plate which extends downward to support the holder against the hunter's leg. The bow rests on top of a generally horizontal base area, held from slipping sideways by a lip. The base is provided with a notch to receive the bow's stabilizer bar or a simple bolt screwed into the stabilizer bar fitting. The notch is preferably inclined to the vertical, such that the bow string is inclined inwardly toward the hunter's upper body, and the stabilizer bar or nocked arrow point is angled outwardly from the hunter's leg. The provision of a second angled notch on the opposite side of the base from the first notch allows the bow to be carried with its center of gravity either in front of or behind the holder, which changes the angle of the bow axis from a tilted-forward "ready" position to a tilted-back "transport" position.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: December 16, 1997
    Inventor: David Bowlsby
  • Patent number: 4420852
    Abstract: An improvement in drain cleaning machines comprising a removable drum containing a length of coiled spring snake in which is inserted a flexible tube for carrying a flow of water to the free end of the snake. The hub of the drum is designed to mount upon a powered shaft adapted to injecting water at house pressure into the center of the hub, and thus into the tube, without leakage. In one embodiment, a swivel is formed inside the free end of the snake, to allow differential twisting between the tube and the snake, thus avoiding kinking of the tube.
    Type: Grant
    Filed: May 8, 1981
    Date of Patent: December 20, 1983
    Inventor: David Bowlsby