Patents Assigned to LeVone A. Blough
  • Self-locking threaded fastener and unlocking tool combination
    Patent number: 4309140
    Abstract: A threaded bolt has two elongated shank parts, the adjoining part ends having mating, stepped shapes. The shank parts when held and rotated in unison can be threaded in a piece such as a nut, but when not so held will frictionally bind in the threads of the piece. A keyway is provided through the shank parts to receive a key for rotating the parts in unison, preventing relative rotational movement therebetween, so that the nut and shank parts may be freely threadingly rotated in the aforesaid piece.
    Type: Grant
    Filed: October 3, 1979
    Date of Patent: January 5, 1982
    Assignee: LeVone A. Blough
    Inventors: Robert G. Steffen, David L. Gregory, LeVone A. Blough