Patents by Inventor Richard Malcolm Johnson

Richard Malcolm Johnson 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: 6309517
    Abstract: This invention comprises a driven conveyor for transporting work pieces into one or more flood plating cells for electroplating a metal onto the planar surfaces and surfaces of the through holes of the work piece. An electrolyte solution is pumped by one or more recirculating pumps into the flood cell at such a rate as to maintain the liquid at a desired level covering the anodes and work pieces while work pieces are moved through the cells. One or more power sources provide direct current to the anodes and to the electrified contactors to transmit electrical current to the work pieces. The electrified contactors are positioned across the path of the work piece and spaced outside of the flood cell such that the electrolyte solution does not contact the contactors. Plating will occur so long as the work piece is in contact with one or more of the electrified contactors and the electrolyte.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: October 30, 2001
    Assignee: Oliver Sales Company
    Inventors: Richard Carroll Condra, Richard Malcolm Johnson
  • Patent number: 6153064
    Abstract: This invention comprises a driven conveyor for transporting work pieces into one or more flood plating cells for electroplating a metal onto the planar surfaces and surfaces of the through holes of the work piece. An electrolyte solution is pumped by one or more recirculating pumps into the flood cell at such a rate as to maintain the liquid at a desired level covering the anodes and work pieces while work pieces are moved through the cells. One or more power sources provide direct current to the anodes and to the electrified contactors to transmit electrical current to the work pieces. The electrified contactors are positioned across the path of the work piece and spaced outside of the flood cell such that the electrolyte solution does not contact the contactors. Plating will occur so long as the work piece is in contact with one or more of the electrified contactors and the electrolyte.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: November 28, 2000
    Assignee: Oliver Sales Company
    Inventors: Richard Carroll Condra, Richard Malcolm Johnson