Patents by Inventor Derek R. Bird

Derek R. Bird 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: 5361712
    Abstract: Cultivating apparatus for leveling, cultivating, and resowing lawns or fields. The cultivating apparatus includes: a row of ripping tines arrayed across the front of the apparatus, which are arranged to freely pivot forward and upward in use, to release clogged soil or other material by reversing, when necessary. A levelling plate is provided immediately behind the tines. An adjustment system is provided for an elongated horizontal rack of cultivating discs, by which the rack may be raised and lowered accurately and evenly at both ends, so as to maintain a correct, horizontal orientation. A corresponding adjustment system on an array of outlets from an elongated seedbox allows all the outlets to be opened or closed equally.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: November 8, 1994
    Assignee: Bruce Robert Townsend
    Inventors: Bruce R. Townsend, Derek R. Bird, Norman C. Goldsack