Patents Assigned to Research Machine & Development, Inc.
  • Padlock device
    Patent number: 4112716
    Abstract: A padlock device including a unitary, elongated, cylindrical metal body having spring loaded shackle elements extending into one end thereof and a key-locking cylinder assembly extending into the other end. Rounded recesses are formed along the sides of the cylindrical body and the shackle pin holes are arranged so that the pins respectively extend through the recesses. The locking cylinder includes a pawl mechanism which engages notches in the ends of the shackle pins for locking the pins in the closed position.
    Type: Grant
    Filed: May 18, 1976
    Date of Patent: September 12, 1978
    Assignee: Research Machine & Development, Inc.
    Inventor: Joachim Wippich