Patents Assigned to Wej-It Expansion Products, Inc.
  • Spring action expansion bolt
    Patent number: 4075925
    Abstract: A masonry expansion bolt employs one or more resilient wires as the expansible wedging member which is positioned in annular grooves along the external surface portion of the bolt shank, the wedging member being selectively expansible in an outward radial direction into wedging engagement with the wall of the hole in which the bolt is inserted to firmly anchor the bolt in place in a positive and reliable manner.
    Type: Grant
    Filed: June 30, 1976
    Date of Patent: February 28, 1978
    Assignee: Wej-It Expansion Products, Inc.
    Inventor: Lester Lerich
  • Spring action expansion bolt
    Patent number: 3967525
    Abstract: A masonry expansion bolt employs one or more resilient wires as the expansible wedging member which is positioned in annular grooves along the external surface portion of the bolt shank, the wedging member being selectively expansible in an outward radial direction into wedging engagement with the wall of the hole in which the bolt is inserted to firmly anchor the bolt in place in a positive and reliable manner.
    Type: Grant
    Filed: January 2, 1974
    Date of Patent: July 6, 1976
    Assignee: Wej-It Expansion Products, Inc.
    Inventor: Lester Lerich