Patents Assigned to Roll Former Corporation
  • Controllably driven seamer
    Patent number: 4279211
    Abstract: A seamer for completing two preformed abutting sheets has a wheeled body for straddling by rolling over the sheets. Sets of die rollers and opposed backing rollers longitudinally aligned along the body are driven by a drive unit after being pivotably positioned in operative opposed relationship. A control mechanism including sensors extending from the body seeks the presence of the preformed sheets or an obstruction to control the operation of the drive unit.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: July 21, 1981
    Assignee: Roll Former Corporation
    Inventor: Ewald A. Stellrecht