Patents by Inventor Philip B. Bolyard

Philip B. Bolyard 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).

  • Collapsible trailer
    Patent number: 4397476
    Abstract: A full trailer frame is provided including an elongated central member and a pair of opposite end transverse members. The elongated central member is longitudinally extendible and retractable and each end of each transverse member has the base end of a support arm pivotally supported therefrom for angular displacement about an upstanding axis between an extended position with the support arm free end extending outwardly of the corresponding transverse member end and a folded position closely paralleling the central member and projecting toward the remote end of the central member.
    Type: Grant
    Filed: February 10, 1981
    Date of Patent: August 9, 1983
    Inventors: Philip B. Bolyard, Patricia A. Bolyard