Patents by Inventor Charles V. De Vries

Charles V. De Vries 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: 4797618
    Abstract: A caddy for a metal detector comprising a completely non-metallic carrier for a portable metal detector of the type having a planar searchcoil head, an elongated rod or stem extending from the searchcoil head at one end to a handle at the opposite end, with an electronic power supply and controls at the handle end connected by a cable to the detector coils mounted in the searchcoil head. Such metal detectors are normally carried by hand. The present invention provides a caddy or cart having a pair of non-metallic wheels on a non-metallic axle supporting an elongated non-metallic connecting bar for connecting to the elongated rod or stem of the metal detector by a pair of adjustable non-metallic brackets at a desired point thereon which positions the searchcoil head of the metal detector a pre-selected distance above the ground when the handle end is grasped by a user and held at the angle which positions the planar searchcoil head substantially parallel to the ground.
    Type: Grant
    Filed: February 11, 1987
    Date of Patent: January 10, 1989
    Inventor: Charles V. De Vries