Patents by Inventor Kenneth D. Clark

Kenneth D. Clark 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: 6729245
    Abstract: A fill door for use on the angled surfaces of furnace shells and chemical containers. The door is pivotally coupled to a door frame integral with the angled surface and includes a rim that mates with a female channel in the door. A U-shaped latch is pivotally connected to the frame and includes a threaded spindle operatively connected to crack. The surface of the door includes a female sleeve having a bore for accommodating the end of the spindle when the latch is over the door and the spindle is tightened into its closed and locked position. The door further includes a cantilevered arm having an angled bore which allows it to swivel around a substantially vertical cylindrical post connected to frame. The arm and door swing in a substantially horizontal plane around the axis of the post.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: May 4, 2004
    Inventor: Kenneth D. Clark
  • Publication number: 20030010264
    Abstract: A fill door for use on the angled surfaces of furnace shells and chemical containers. The door (16) is pivotally coupled to a door frame (18) integral with the angled surface and includes a rim (26) that mates with a female channel (28) in the door (16). A U-shaped latch is pivotally connected to the frame (18) and includes a threaded spindle operatively connected to a crank. The surface of the door (16) includes a female sleeve having a bore for accommodating the end of the spindle when the latch is over the door (16) and the spindle is tightened into its closed and locked position. The door (16) further includes a cantilevered arm having an angled bore which allows it to swivel around a substantially vertical cylindrical post connected to frame. The arm and door swing in a substantially horizontal plane around the axis of the post.
    Type: Application
    Filed: August 14, 2002
    Publication date: January 16, 2003
    Inventor: Kenneth D. Clark
  • Patent number: 5620043
    Abstract: A transfer system for delivering molten metal against gravity from a pressurized furnace to a mold, comprising: a ceramic lined refractory metal gatebox adapted to sit on or above the furnace, the gatebox having one or more openings at its top for communicating with the mold and having a plurality of metal transfer openings along its bottom; a stalk tube depending from each of the gatebox bottom openings, each stalk tube being effective to extend into at least the upper region of the molten metal within the furnace; a sealing gasket between the stalk tube and gatebox; imposing a first fluid pressure on the molten metal in the furnace to gradually force the molten metal up through the stalk tubes into the gatebox to substantially fill same, said stalk tubes promoting a convection circulation of metal between molten metal between the furnace and gatebox to retain the temperature of the molten metal in the gatebox at a difference of no greater than 15.degree.-15.degree. F.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: April 15, 1997
    Assignee: Ford Motor Company
    Inventors: Mark A. Chamarro, Kenneth D. Clark
  • Patent number: 4152786
    Abstract: A compensator designed to be implanted within a living body and connected to an implanted reciprocating blood pump. A housing defines a gas-tight chamber which is separated into front and rear portions by a flexible membrane. A piston attached to the membrane guides the movement of the membrane, and a spring mechanism which links the piston and the housing is designed to maintain substantially constant pressure in the front chamber throughout the discharge and fill strokes of the reciprocating blood pump. Two pivoted, diametrically opposed, compression springs are compressed at rest at the end of the fill stroke and exert a force on the membrane which overcomes the differential pressure acting in the opposite direction when the membrane moves so as to expand the rear chamber volume.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: May 8, 1979
    Assignee: Andros Incorporated
    Inventors: Kenneth D. Clark, Jal S. Jassawalla, Peer M. Portner