Tapered fastener
AssigneeDuraforce Holdings, LLC
InventorPierre A. Dionne
Life of this patent
Estimating the term…
Abstract
A vibration resistant nut is provided for attaching a working surface to a threaded stud, the stud extending through a hole defined through the working surface. The nut includes an annulus for receiving the stud. The annulus includes a cylindrical portion and a tapered terminal end portion for being received in the hole. The tapered terminal end portion extends from the cylindrical portion. The tapered terminal end portion has an outer surface that narrows diametrically from the cylindrical portion. The nut includes a head extending from the cylindrical portion of the annulus opposite the tapered terminal end portion, the head having outer engagement surfaces for engaging a tool for rotation of the nut, the head having a threaded interior for engaging threads of the stud.
Claims15
A vibration resistant nut for attaching a working surface to a threaded stud, the stud extending through a hole defined through the working surface, the nut comprising:
- an annulus for receiving the stud and having a first longitudinal length, the annulus including a cylindrical portion and a tapered terminal end portion for being received in the hole, the tapered terminal end portion extending from the cylindrical portion,
- wherein the cylindrical portion has an outer surface that has a consistent outer diameter around a circumference and an entire longitudinal length of the cylindrical portion,
- wherein the tapered terminal end portion has an outer surface that narrows diametrically from the cylindrical portion, and
- wherein the annulus has a smooth cylindrical interior wall through both the tapered terminal end portion and the cylindrical portion and the interior wall of the cylindrical portion is free of threads;
- and
- a head extending from the cylindrical portion of the annulus opposite the tapered terminal end portion, the head being of a second longitudinal length and having outer engagement surfaces for engaging a tool for rotation of the nut, the head having a threaded interior for engaging threads of the stud,
- wherein a diameter of the head is greater than a diameter of the annulus such that no portion of the annulus extends radially outward further than any portion of the head,
- wherein the head further comprises a sloped forward shoulder affixed along opposed edges thereof to and disposed between the outer engagement surfaces and the cylindrical portion such that the shoulder extends radially outward relative to the cylindrical portion and radially inward relative to the outer engagement surfaces and narrows diametrically from the engagement surfaces to the cylindrical portion, and
- wherein the first longitudinal length is greater than the second longitudinal length.
A wheel hub assembly comprising:
- a central hub;
- a flange mounted on the hub, the flange having multiple holes;
- multiple studs each affixed to and extending from the hub, each stud having an outer extending portion with external threads;
- a flange for mounting to the central hub, the flange having multiple holes each for passing therethrough the outer extending portion of a respective stud;
- and
- multiple vibration resistant nuts for cooperatively securing the flange to the hub by each engaging a respective stud of the multiple studs passed through a respective hole of the flange, each of the multiple vibration resistant nuts comprising:
- an annulus for receiving the respective stud and having a first longitudinal length, the annulus including a cylindrical portion and a tapered terminal end portion for being received in the respective hole of the flange, the tapered terminal end portion extending from the cylindrical portion,
- wherein the cylindrical portion has an outer surface that has a consistent outer diameter around a circumference and an entire longitudinal length of the cylindrical portion,
- wherein the tapered terminal end portion has an outer surface that narrows diametrically from the cylindrical portion, and
- wherein the annulus has a smooth cylindrical interior wall through both the tapered terminal end portion and the cylindrical portion and the interior wall of the cylindrical portion is free of threads;
- and
- a head extending from the cylindrical portion of the annulus opposite the tapered terminal end portion, the head having outer engagement surfaces for engaging a tool for rotation of the nut, the head having a second length and a threaded interior for engaging external threads of the respective stud,
- wherein a diameter of the head is greater than a diameter of the annulus such that no portion of the annulus extends radially outward further than any portion of the head,
- wherein the head further comprises a sloped forward shoulder affixed along opposed edges thereof to and disposed between the outer engagement surfaces and the cylindrical portion such that the shoulder extends radially outward relative to the cylindrical portion and radially inward relative to the outer engagement surfaces and narrows diametrically from the engagement surfaces to the cylindrical portion, and
- wherein the first length is greater than the second length.
Dependencies are inferred from the claim text.