Patent ID: 7189163
Filing Date: 2007-03-13
Classification: F16B

Abstract:
1. A method for preparing a t-nut comprising the steps of: (i) providing a metal board; (ii) cupping the metal board, wherein a non-cupped metal board becomes a flange portion extending horizontally, having a first edge and a second edge opposed to the first edge, wherein the first edge has a first protruded portion extending outward, wherein the second edge has a second protruded portion extending outward; (iii) penetrating a hole on a bottom of the cupped metal board so as to form a shank portion shaped in a cylindrical tube extending vertically, wherein the shank portion comprises a base portion having a first end with the flange portion, and a caulking portion at a second end; (iv) forming a female screw on an inner surface of the base portion; (v) bending up a portion of the first edge of the flange to form a first pair of the claws to extend generally parallel to the shank portion; (vi) bending up a portion of the second edge of the flange to form a second pair of the claws to extend generally parallel to the shank portion; (vii) bending up the first protruded portion between the first pair of claws such that, the first edge at the first protruded portion being faced up, (viii) bending up the second protruded portion between the second pair of claws such that, the second edge at the second protruded portion being faced up.