Patents by Inventor Ralph E. Cullen

Ralph E. Cullen 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: 5642979
    Abstract: Converts any fork lift truck to a roll turning fork truck by sliding a specially designed rectangular frame onto the truck forks. A safety chain is incorporated to firmly attach the device to the fork lift carriage. The frame combines a power hoist, with load sensing brake, and cable that engages a roll or coil core via a roll center lift, which continuously grips the core firmly, in combination with an arm proceeding out from the roll center lift to the outside mid-width of the roll or coil which is attached to an adjustable fixed length chain. By lowering or raising the hoist cable past the fixed length chain, rolls can be turned to either a true horizontal or vertical position. The adjustable "L" frame suspends from the fixed length chain at the lowest point with a pivot pin to achieve the turning feature when the hoist cable is activated.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: July 1, 1997
    Assignee: N.R.S. Systems, Inc.
    Inventors: Ralph E. Cullen, John Robert Sjolund
  • Patent number: 5513944
    Abstract: The disclosure is directed to convert any fork lift truck to a roll turning fork truck by sliding a specially designed rectangular frame onto the truck forks. Two safety chains are incorporated to firmly attach the device to the fork lift carriage. The frame combines a power winch and cable that engages a roll or coil core via a roll center lift in combination with an arm proceeding out from the roll center lift to the outside mid-width of the roll or coil which is attached to an adjustable fixed length chain. By lowering or raising the winch cable past the fixed length chain, rolls can be turned to either a true horizontal or vertical position. The adjustable "L" frame suspends from the fixed length chain at the lowest point with a pivot pin to achieve the turning feature when the winch cable is activated. Even though a fork truck may be stationary, the center lift is free to guide into the roll because the roll center lift is connected to a flexible cable and flexible chain.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: May 7, 1996
    Assignee: N.R.S. Systems, Inc.
    Inventors: Ralph E. Cullen, John R. Sjolund
  • Patent number: 4358143
    Abstract: The disclosure is directed to apparatus (11) for lifting, maneuvering and transferring a roll of material to an independently supported shaft (93). The apparatus is adapted for suspension from an overhead crane and comprises an elongated frame (12) the lower end of which is pivotally connected to a torque assembly (14) that includes a center probe (15). The center probe includes a plurality of radially expanding teeth (49) that engage the inner surface of the roll core and retain it on the center probe (15). An actuator (13) of the extensible-retractable type is pivotally connected between the upper end of the elongated frame (12) and one end of the torque arm assembly (14). Extension and retraction of the actuator (13) causes the torque arm assembly (14) and center probe (15) to move between substantially vertical and horizontal positions. The extreme end of the center probe includes a coupler (61) that releasably interlocks with a coupler (94) secured to the end of the machine shaft (93).
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: November 9, 1982
    Assignee: Central Machine Corporation
    Inventor: Ralph E. Cullen