Patents Assigned to Koch Systems Incorporated
  • Self-opening can lid with improved contour of score and means for making
    Patent number: 5219257
    Abstract: An easy-open container end includes a displacable panel defined by a score line having curved tails which is in parallel relationship with adjacent means for reinforcing, thereby reducing opening failures, while controlling tearing. A score die and anvil is further provided wherein a four bolt pattern provides greater resistance to distortion and more even mounting stress distribution, resulting in more even score line residuals and reduced opening failures.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: June 15, 1993
    Assignee: Koch Systems Incorporated
    Inventor: Douglas F. Koch
  • Self-opening can lid with improved contour of score
    Patent number: 5064087
    Abstract: An easy-open container end includes a displaceable panel defined by a score line having curved tails which is in parallel relationship with adjacent means for reinforcing, thereby reducing opening failures, while controlling tearing. A score die and anvil is further provided wherein a four bolt pattern provides greater resistance to distortion and more even mounting stress distribution, resulting in more even score line residuals and reduced opening failures.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: November 12, 1991
    Assignee: Koch Systems Incorporated
    Inventor: Douglas F. Koch