Patents by Inventor Mina Bickar

Mina Bickar 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: 5527077
    Abstract: An attachment for converting a pitchfork into a combination pitchfork and rake. The attachment comprises a rake head having a plurality of apertures to receive the tines of a pitchfork, along which it is movable between a retracted and an extended position, and a linear array of rake prongs that depend from the rake bar. In a preferred embodiment, associated with each prong is a clevis attached to the rake bar to which the prong is pivotally mounted for free rotation about a horizontal axis during forward-directed scooping motions of the pitchfork along a ground surface when the attachment is in an extended position; during rear-directed, raking motions of the pitchfork, however, a lower portion of a front wall of the clevis permits rotation of the prong only up to a vertical position. Accordingly, the attachment provides a single tool capable of rapid and convenient alternation between raking and pitching motions.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: June 18, 1996
    Inventor: Mina Bickar