Patents Assigned to Mechanical Enterprises, Incorporated
  • Electric switch utilizing coil spring torsion biasing in switch operation
    Patent number: 4203016
    Abstract: A miniaturized electric switch particularly suitable for electronic keyboard control applications includes at least one coil spring having a laterally extending coil spring end contact where spring compression biases the switch toward an unoperated condition and spring torsion urges the end contact relative to a second contact and a switch housing mounted cam engages the coil spring end contact incident operation of the switch between operated and unoperated conditions to urge the end contact relative to the second contact.
    Type: Grant
    Filed: November 8, 1978
    Date of Patent: May 13, 1980
    Assignee: Mechanical Enterprises, Incorporated
    Inventor: Robert H. Twyford