Nut, a fastener provided with a nut, and a fastening device therefor

• US 20040131445A1
• Filed: 01/06/2003
• Published: 07/08/2004
• Est. Priority Date: 01/06/2003
• Status: Abandoned Application

• Current Assignee: Unex Corporation (GN Store Nord A/S)
• Original Assignee: Unex Corporation (GN Store Nord A/S)
• Inventors: Kjellberg, Carl
• Application Number:
  US10/337,170
• Publication Number:
  US 20040131445A1
• Time in Patent Office: Days
• US Class Current: 411/368
• CPC Class Codes: B25B 21/002 for special purposes
• CPC Class Codes: F16B 37/00 Nuts or like thread-engaging members specially shaped for rotations by a tool F16B23/00
• CPC Class Codes: F16B 43/00 Washers or equivalent devices; Other devices for supporting bolt-heads or nuts circlips F16B21/18; for indicating tensile load F16B31/02; forming a whole with the bolt or nut F16B33/00; locking bolts or nuts by means of a fixed plate or ring, or washer-like resilient plates F16B39/10, F16B39/24

Abstract

A nut arranged on a bolt has a first portion spaced in an axial direction from a washer and having a polygonal outer surface, and a second portion located between the first portion and the washer and having a transverse dimension which is smaller than a transverse dimension of the polygonal surface of the first portion of the nut, wherein a holding engages with the washer so as to hold the washer and to prevent it from turning, and a driving element engages with the polygonal surface of the nut and to turn the nut.

Claims

1. A nut for a fastener including a bolt;

a nut threadingly engaging with the bolt, and a polygonal washer adapted to be located between the nut and an object in which the bolt is introducible and engaged with said bolt so that the bolt is non rotatable relative to the washer but axially displaceable relative to the washer, said washer having a polygonal circumferential surface, said nut having a first portion spaced in an axial direction from said washer and having a polygonal outer surface, and a second portion adapted to be located between the first portion and said washer and having a transverse dimension which is smaller than a transverse dimension of said polygonal surface of said first portion of said nut.

2. A nut as defined in claim 1, wherein said second portion of said nut has a circular cross-section.

3. A fastener, comprising a bolt;

a nut threadingly engaging with said bolt;

a washer adapted to be located between said nut and an object in which said bolt is introducible and engaged with said bolt so that said bolt is non rotatable relative to said washer but axially displaceable relative to said washer, said nut having a first portion spaced in an axial direction from said washer and having a polygonal outer surface, and a second portion located between said first portion and said washer and having a transverse dimension which is smaller than a transverse dimension of said polygonal surface of said first portion of said nut.

4. A fastener as defined in claim 3, wherein said second portion of said nut has a circular cross-section.

5. A fastening device, comprising a fastener including a bolt, a nut threadingly engaging with said bolt, a polygonal washer adapted to be located between said nut and an object in which said bolt is introducible and engaged with said bolt so that said bolt is non rotatable relative to said washer but axially displaceable relative to said washer, said nut having a first portion spaced in an axial direction from said washer and having a polygonal outer surface, and a second portion located between said first portion and said washer and having a transverse dimension which is smaller than a transverse dimension of said polygonal surface of said first portion of said nut;

and tightening means including a holding element engageable with said washer so as to hold said washer and to prevent it from turning, and a driving element adapted to engage with said polygonal surface of said nut and to turn said nut.

6. A fastening device as defined in claim 5, wherein said second portion of said nut has a circular cross-section.

7. A nut as defined in claim 5, wherein said holding element has a holding portion with an axial height which is smaller than an axial height of said second portion of said nut.