Locking nut and associated fastener

Patent metadata

Field	Value
Publication number	US-12066049-B2
Application number	US-202117520605-A
Country	US
Kind code	B2
Filing date	Nov 5, 2021
Priority date	Nov 19, 2020
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

The present invention relates to a locking nut (10), comprising: a body (20) and a bore passing through said body along a main axis, the body comprising: a bearing face (30); a drive surface (32); and at least one through-hole (38), substantially perpendicular to the main axis from the radial drive surface.The body further comprises a locking collar (36) of elliptical shape; and the drive surface comprises an upper region (50) and a lower region (52), adjacent along the main axis, the lower region being situated between the upper region and the bearing surface; a perimeter of the lower region around the main axis being greater than a perimeter of the upper region; the at least one through-hole (38) extending from the upper region (50).

First claim

The invention claimed is:

1. A locking nut, comprising a body and a bore passing through said body along a main axis, the body comprising: a bearing face substantially perpendicular to the main axis; a drive surface; and at least one through-hole extending substantially perpendicular to the main axis from the drive surface;
said nut being characterized in that:
the body further comprises a locking collar of elliptical shape, extending along the main axis away from the bearing surface relative to the drive surface; and
the drive surface comprises an upper region and a lower region, adjacent along the main axis, the lower region being situated between the upper region and the bearing surface; a perimeter of the lower region in a plane perpendicular to the main axis being larger than a perimeter of the upper region in a plane perpendicular to the main axis;
the at least one through-hole extending through a portion of the upper region.

2. A nut according to claim 1 , wherein the drive surface has a series of first flats and a series of second flats, parallel to the main axis; the first flats extending over the upper and lower regions, the second flats extending only over the lower region.

3. A nut according to claim 2 , wherein the lower region comprises first and second intersections between adjacent flats, each first intersection forming a convex surface and each second intersection forming a concave surface.

4. A nut according to claim 2 , wherein the at least one through-hole extends into the upper region between two adjacent first flats.

5. A nut according to claim 2 , wherein the drive surface upper region defines an upper region height and the drive surface lower region defines a lower region height that is greater than the upper region height.

6. A nut according to claim 5 , wherein the drive surface upper region includes six flats and the drive surface lower region includes twelve flats.

7. A nut according to claim 1 , further comprising a base arranged between the bearing surface and the lower region of the drive surface.

8. A fastener comprising: a nut according to claim 1 ; and a threaded rod, suitable for being assembled with an internal thread of the bore of the nut.

9. An assembly comprising: a fastener according to claim 8 ;
and a metal wire, able to be passed through the at least one through-hole of the nut.

Assignees

• Lisi Aerospace

Inventors

• Goyer Julien
• Sotou-Bere Batoubié

Classifications

• F16B39/284

  Locking by means of elastic deformation ({F16B39/2825, F16B39/36,} F16B39/38 take precedence) · CPC title

• F16B39/20

  by means of steel wire or the like (F16B39/10 takes precedence) · CPC title

• F16B39/30 Primary

  Locking exclusively by special shape of the screw-thread · CPC title

• F16B39/101 Primary

  with a plate, spring, wire or ring holding two or more nuts or bolt heads which are mainly in the same plane · CPC title

• F16B37/00 Primary

  Nuts or like thread-engaging members {(specially shaped for rotations by a tool F16B23/00)} · CPC title