Patents Assigned to Reel Precision Maufacturing Corporation
  • Magnetic spring grip device
    Patent number: 3974902
    Abstract: An electromagnetically actuated clutch or the like having a helical spring disposed about the surface of a relatively rotatable drum, and an electromagnet with a fixed annular pole piece closely adjacent the free end coil of the spring. The spring is induced to grip the drum surface by the action of magnetic flux passing from the drum to the spring and thence directly to the polepiece.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: August 17, 1976
    Assignee: Reel Precision Maufacturing Corporation
    Inventors: Robert L. Wahlstedt, Robert F. Rasmussen, Lee W. Johnson