Nut and method for adhesive nut attachment
View Patent ↗A nut and a method of attaching the nut to a work piece includes the nut having a top side with a threaded bore therein to receive a bolt and the nut having an underside with a skirt depending from the outer periphery thereof. A shank depends from the nut and extends into a hole in the work piece to which the nut is to be attached. A heat curable adhesive coats the shank and also coats the underside of the nut between the depending shank and the depending skirt so that upon curing of the heat curable adhesive the nut is adhesively secured to the work piece.
1. A nut for attachment to a work piece comprising:
a nut head having a top side with threaded bore therein to receive a bolt and an underside having a skirt depending from the outer periphery thereof to engage with the work piece and space the underside of the nut head from the work piece;
a shank depending from the nut head for extending into a hole in a work piece to which the nut is to be attached;
said underside of the nut head and said skirt and said shank cooperating to define a recess for receiving an adhesive;
a heat curable adhesive filling the recess and coating the shank and coating the underside of the nut between the depending shank and the depending skirt so that upon curing of the heat curable adhesive the nut is adhesively secured to the work piece.
2. The nut of claim 1 in which the threaded bore for receiving the bolt extends through the shank.
3. The nut of claim 1 in which the threaded bore has a closed end and does not extend through the nut.
4. The nut of claim 1 in which the skirt extends continuously around the periphery of the nut.
5. The nut of claim 1 in which the skirt extends intermittently around the periphery of the nut and is provided by projections that depend from the underside of the nut at spaced intervals around the periphery of the underside of the nut.
6. The nut of claim 1 in which the heat curable adhesive is preformed as a ring that is installed onto the shank of the nut.
7. The nut of claim 1 in which the heat curable adhesive is a liquid that is dispensed onto the shank of the nut.
8. A nut for attachment to a work piece comprising:
a nut head having a top side with threaded bore therein to receive a bolt and an underside having a skirt depending from the outer periphery thereof;
a shank depending from the nut head for extending into a hole in a work piece to which the nut is to be attached;
a heat curable adhesive coating the shank and coating the underside of the nut between the depending shank and the depending skirt so that upon curing of the heat curable adhesive the nut is adhesively secured to the work piece;
said heat curable adhesive being preformed as a ring that is installed onto the shank of the nut, and said ring including a hollow sleeve portion for surrounding the shank of the nut and a flange that extends from the hollow sleeve portion to underlie the underside of nut.
9. The combination of a nut and a work piece to which the nut is to be attached, comprising:
the nut having a top side with a threaded bore therein to receive a bolt and an underside having a skirt depending from the outer periphery thereof to engage with the workpiece and a shank depending from the center of the underside, said underside and said skirt and said shank cooperating to define a recess;
a heat curable adhesive provided within the recess and coating the shank and also coaling the underside of the nut between the depending shank and the depending skirt;
the work piece having a hole therein of a diameter to receive the adhesive coated shank of the nut so that upon application of heat to cure the heat curable adhesive the nut is adhesively adhered to the work piece.
10. The combination of claim 9 in which the skirt of the nut is shaped to engage with the work piece when the shank is received in the hole of the work piece to thereby provide a path electrical current flow between the nut and the work piece to thereby heat and cure the heat curable adhesive.
11. The combination of claim 9 in which the work piece is a sheet metal material and the hole is an extruded hole defined by sheet metal walls that receive the shank of the nut.