Nut

Patent metadata

Field	Value
Publication number	US-9303678-B2
Application number	US-201313734290-A
Country	US
Kind code	B2
Filing date	Jan 4, 2013
Priority date	Jul 6, 2010
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A nut for fastening a first workpiece defining a through recess to a second workpiece including a bolt projecting in an axial direction through the recess, and the nut comprises an axially extending shank and flange at a first end of the shank, and the nut defines a bore extending axially through the flange and into the shank and further defines an opening to the bore proximate to the first end of the shank, and the nut further includes an elastic holding section radially outward of the opening, and the nut partially defines a depression radially outward of the holding section, so that the holding section can flex radially outward into the depression when the nut is jammed onto the bolt.

First claim

What is claimed is:

1. A nut for fastening a first workpiece defining a through recess to a second workpiece including a bolt projecting in an axial direction through the recess, and the nut comprises: an axially extending shank and a flange at a first end of the shank, and the nut defines a bore extending axially through the flange and into the shank and further defines an opening to the bore proximate to the first end of the shank, via the opening the nut being insertable over the bolt, and the nut further includes an elastic holding section radially outward of the opening, and the nut partially defines a blind depression radially outward of the holding section and the depression is open toward the flange; and wherein the bore extends axially through the nut and the nut further includes a frangible inspection section extending radially across the bore, and the inspection section is breakable by a bolt inserted into the nut to a predetermined axial distance.

2. A nut according to claim 1 , wherein the depression is an annular depression around the opening.

3. A nut according to claim 2 , wherein the holding section includes a projection extending radially inward into the opening of the bore.

4. A nut according to claim 1 , wherein the nut further defines an introduction taper, which narrows from the flange to the opening.

5. A nut according to claim 4 , wherein the depression is located radially outward of the opening.

6. A nut according to claim 1 , wherein the bore is of circular cross section.

7. A nut according to claim 1 , wherein the bore defines a first diameter, at an axial location on a first side of the inspection section facing away from the opening, and a second diameter, at an axial location on a second side of the inspection section facing towards the opening, and the first diameter is larger than the second diameter.

8. A nut according to claim 1 , wherein the nut is integrally formed from plastic.

9. A nut for fastening a first workpiece defining a through recess to a second workpiece including a bolt projecting in an axial direction through the recess, and the nut comprises:
an axially extending shank;
a flange located at a first end of the shank;
an axial through bore defined by the shank and flange, and the bore including an opening proximate to the first end of the shank and via which opening the nut is insertable over the bolt;
an axially extending blind groove partially defined by the nut, located radially outward of the opening, and open toward the flange;
an elastic holding element located between the opening and the blind groove, and radially displaceable into the blind groove; and
a frangible inspection element extending radially across the bore, and the inspection element is breakable by a bolt inserted into the nut to a predetermined axial distance.

10. A nut according to claim 9 , wherein the bore defines a first diameter, at a first axial location on a first side of the inspection element facing away from the opening, and a second diameter, at a second axial location on a second side of the inspection element facing towards the opening, and the first diameter is larger than the second diameter.

11. A nut according to claim 9 , wherein the nut further defines an introduction taper, which narrows from the flange to the opening.

Assignees

• Newfrey Llc

Inventors

• Ducornait Pierre-Yves
• Schmidt Michael-Udo
• Rosemann Frank
• Patricot Nicolas

Classifications

• F16B39/284 Primary

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

• Y10T29/49948

  Multipart cooperating fastener [e.g., bolt and nut] · CPC title

• F16B37/005

  into which threads are cut during screwing · CPC title

• F16B37/0842 Primary

  fastened to the threaded bolt with snap-on-action, e.g. push-on nuts for stud bolts (F16B37/0857 takes precedence; snap-on-action of a pin, spigot, shaft or the like and a member surrounding it F16B21/06) · CPC title