Patents Assigned to Keymak Company
  • Patent number: 5244321
    Abstract: A code key cutting apparatus for cutting keys according to the majority of key-lock manufacturers codes as to the location, depth and shape of notches cut into a key blank. The apparatus includes a notch location mechanism and a depth location mechanism, each having a carriage coupled to an indexing dial to indicate the extent of travel of the carriage. The indexing dial is positionable without moving the carriage thus enabling the indexing mechanism to be initialized according to any lock manufacture specifications. In addition, the apparatus includes a notch tracing mechanism to cut a variety of notch shapes into a key blank without changing the cutting blade.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: September 14, 1993
    Assignee: Keymak Company
    Inventor: Riley M. Sopko
  • Patent number: 4993291
    Abstract: An apparatus for cutting a key blank, including a clamp for securing part of the key blank between the cutting edge of a punch and an aperture in a mating die. The die includes a surface for reinforcing part of the key blank when the key blank is in contact with the cutting edge of the punch. The apparatus further includes a resilient element for biasing the key blank away from the reinforcing surface and toward the punch when the key blank is secured between the cutting edge of the punch and the aperture.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: February 19, 1991
    Assignee: Keymak Company
    Inventor: Riley M. Sopko