Patents Examined by E. Micheal Combs
  • Segmented die
    Patent number: 4872790
    Abstract: A threading or rethreading die made up of a plurality of complementary separable interfitting parts held together by a tension spring disposed around the exterior surface thereof which in use are separated from one another under the tension of the spring thereby enabling the die to be passed over a member to be threaded or rethreaded whereat the separating force is relaxed permitting the parts to re-engage on the member. The die is then turned to effect the cutting of the threads.
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: October 10, 1989
    Inventor: Wade Sibole
  • Apparatus and method for fabricating magnetic devices
    Patent number: 4813126
    Abstract: The invention comprises apparatus for forming nelical coils from conductive strip metal, counting the turns and cutting them to separate the turns into coils of desired numbers of turns, annealing the coils, tabbing the ends thereof, coating the coils with insulative coating and curing the coating by baking; compressing the so-insulated coils under extreme pressure to comprise a helical coil product, per se, or to fit conventional cores to comprise an inductor product.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: March 21, 1989
    Assignee: Williamson Windings Inc.
    Inventor: James A. Williamson