Expansion anchor stud
OwnerFrederic C. Abrahaminventor
Life of this patent
Estimating the term…
Abstract
An expansion anchor stud comprises an expansion anchor (16) for gripping a hole (25) in a surface (24), an axially-aligned threaded stud (14) of substantially the same outside diameter as the anchor (16) and engaging the distal end of the anchor (16) for being disposed in a hole (26) in a panel (27) mounted to the surface (24) and having a hole (28) therethrough, and an axially-aligned bolt (12) extending through the hole (28) in the stud (14) and engaging the anchor (16) and limited in insertion by the distal end of the stud (14).
Claims5
An expansion anchor stud (10) for securing a member with a nut to a surface, said surface having a blind hole extending therein, comprising:
- a threaded bolt (12) of a first diameter;
- an externally threaded stud (14) of a second diameter adapted to receive an internally threaded nut, and having an axial hole therethrough for receiving the bolt (12), wherein the bolt (12) has a head (30) on its distal end that is larger than the axial hole in the threaded stud (14), and wherein the bolt (12) is longer than the threaded stud (14) so that the proximal end of the bolt (12) extends past the proximal end of the threaded stud (14);
- and
- an expansion shield (16) having an outside diameter substantially equal to the second diameter and threaded to receive the threads on the proximal end of the bolt (12);
- wherein threading the bolt (12) through the axial hole in the threaded stud and into the expansion shield (16) causes expansion of the expansion shield (16) and consequent setting of the expansion shield within a hole in a surface;
- and
- wherein a member is subsequently fastened to the surface when the nut is threaded onto the stud.
Dependencies are inferred from the claim text.