Patents by Inventor Clayton M. Smith

Clayton M. Smith 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: 6536064
    Abstract: A folding portable ramp is provided that includes a first platform section having a first end and a second end, and a second platform section having a first end and a second end. The first end of the second section is pivotally coupled to the second end of the first platform section, and the second section is adapted to be pivoted relative to the first section. A leg support assembly is coupled to at least one of the first and the second platform sections. The support assembly is adapted to be pivoted between a first position wherein the support assembly is oriented generally parallel to the first and the second sections and a second position wherein the support assembly extends outwardly away from the first or second section.
    Type: Grant
    Filed: July 6, 1999
    Date of Patent: March 25, 2003
    Assignee: ROM Corporation
    Inventors: Edward A. Swink, Clayton M. Smith, Carl L. Murphy, Rick Lavelock
  • Patent number: 6427749
    Abstract: A power-driven shutter door includes a curtain supported in a pair of tracks for bi-directional sliding movement open and closed positions, and a power drive assembly for driving movement of the curtain. The power drive assembly includes a pair of sprockets that engage shoes of the curtain, a motor for driving bi-directional rotation of the sprockets, and a control circuit including a switch movable between “open” and “close” positions for supplying power to the motor to move the shutter curtain between positions. A power-driven lock is also provided, and includes a rod supported on the curtain for movement between extended and retracted positions, a manually-operated actuator for shifting the rod between the extended and retracted positions, and a power-driven lock supported on one of the tracks and presenting a locking arm shiftable between an extended position in which the arm protrudes into the track and a relatively retracted position.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: August 6, 2002
    Inventors: Edward A. Swink, Clayton M. Smith, Carl L. Murphy, Rick Lavelock
  • Patent number: 6247740
    Abstract: A wall divider system (20) for use in a freight vehicle (30) uses double axis hinge assemblies (22) to move insulating partitions (26) from a loaded/closed position to a forklift loading position and from the loaded position to a hand loading position. Each hinge assembly includes wheels (58) rotatably received in tracks (24) to move the partitions (26) along the length of the vehicle (3). Each hinge assembly (22) also includes a hinge shaft (5) pivotal about a first, vertical axis to move the partitions (26) to and from the hand loading position. A hinge pipe (52) is rotatably received on the hinge shaft (50), so that it rotates about a second, horizontal axis to move the partitions (26) to the forklift loading position. A lift assembly (28) is selectively used to lift the partitions into the forklift loading position and hold them there and to return the partitions to the lowered, loaded/closed position.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: June 19, 2001
    Assignee: R.O.M. Corporation
    Inventor: Clayton M. Smith
  • Patent number: 6085825
    Abstract: A power-driven shutter door includes a curtain supported in a pair of tracks for bi-directional sliding movement open and closed positions, and a power drive assembly for driving movement of the curtain. The power drive assembly includes a pair of sprockets that engage shoes of the curtain, a motor for driving bi-directional rotation of the sprockets, and a control circuit including a switch movable between "open" and "close" positions for supplying power to the motor to move the shutter curtain between positions. A power-driven lock is also provided, and includes a rod supported on the curtain for movement between extended and retracted positions, a manually-operated actuator for shifting the rod between the extended and retracted positions, and a power-driven lock supported on one of the tracks and presenting a locking arm shiftable between an extended position in which the arm protrudes into the track and a relatively retracted position.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: July 11, 2000
    Assignee: Rom Corporation
    Inventors: Edward A. Swink, Clayton M. Smith, Carl L. Murphy, Rick Lavelock