Patents by Inventor David D. Perciful

David D. Perciful 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: 4673219
    Abstract: A motor powered, drum equipped, manually operable shingle removal tool for use by roofing contractors, home improvement companies and the like. A rigid, steel frame mechanically supports a conventional internal combustion engine linked through appropriate belts and pulleys to a front-mounted rotary drum. A plurality of rigid cutting teeth disposed about the outer surface of the cylindrical drum are adapted to forcibly contact the shingles to be removed. A lower sled which guides the tool along the roof surface may be selectively adjusted to facilitate proper elevation of the rotary drum above the shingle surface at a suitable height for optimum operation. The cutting teeth of the drum may be adjustably positioned relative to the outer surface of the drum to compensate for adjustment of the sled. A selectively adjustable elongated handle coupled to the rear of the machine frame directly above a pair of caster wheels facilitate maneuvering of the tool.
    Type: Grant
    Filed: November 26, 1985
    Date of Patent: June 16, 1987
    Assignees: J. T. Barr, Keith Doty
    Inventor: David D. Perciful