Patents Assigned to Williams Form Engineering Corporation
  • Coupling for coil-thread rebar
    Patent number: 4362423
    Abstract: This coupling device locks together overlapped lengths of coil-thread rebar by positively interengaging segments of the device with the threading of the respective rebar rods, and positively interengaging the segments themselves for alignment, and to complete the stress transfer.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: December 7, 1982
    Assignee: Williams Form Engineering Corporation
    Inventor: Wendell J. Miles