Patents by Inventor Charlton R. Davidson

Charlton R. Davidson 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: 5538515
    Abstract: A hammering body having a plurality of protrusions on its external surface useful for randomly fading fabric and a method for randomly fading fabric are provided. The method comprising the steps of providing an at least partially wet fabric to be faded, at least one hammering body having an external surface with a plurality of protrusions, and a powder comprising a bleaching agent to a tumbling chamber, tumbling the fabric, the hammering body and the powder in the chamber such that the protrusions of the hammering body repeatedly strike the fabric, thereby driving the powder into the fabric until a desired fading effect is achieved, and separating the faded fabric from the hammering body.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: July 23, 1996
    Assignee: Sentani Trading Ltd.
    Inventors: Mordechai Kafry, Charlton R. Davidson
  • Patent number: 4262508
    Abstract: The metal surfaces of a lock mechanism are covered with a shield of a relatively low thermal conductivity material to insulate the fingers of the user from direct contact with metal to prevent possible burning or discomfort while operating the lock mechanism. In a preferred embodiment for use with automotive ignition switches of the type having raised metal wings for rotating a lock cylinder, the thermal shield comprises rubber or plastic pockets or caps which are secured in place over the metal wings to enable rotation of the lock cylinder with the fingers contacting only the surfaces of the pockets or caps.
    Type: Grant
    Filed: March 9, 1978
    Date of Patent: April 21, 1981
    Inventor: Charlton R. Davidson
  • Patent number: 4145840
    Abstract: A generally U-shaped clip of spring steel is adapted for holding plants in a predetermined position along a brick wall or the like. The clip comprises generally flat legs extending outwardly from a bend at a relatively wide angle when the clip is in its untensioned state. The free ends of the legs are separated by a greater distance in such untensioned state than the distance between adjacent bricks at a mortar joint of the brick wall. By forcing the legs together, the clip can be installed in the crevice at the mortar joint with the free ends of the legs engaging the opposed surfaces of adjacent bricks. The spring tension retained by the clip when installed in the crevice secures the clip to the wall by frictional engagement with the surfaces of the adjacent bricks. A suitable retainer, such as a twist of wire attached to the bend of the clip, permits vines or the like to be fastened in place against the wall.
    Type: Grant
    Filed: February 28, 1978
    Date of Patent: March 27, 1979
    Inventor: Charlton R. Davidson