Locking nut, bolt and clip systems and assemblies

• US 6,905,297 B2
• Filed: 09/10/2003
• Issued: 06/14/2005
• Est. Priority Date: 04/10/1996
• Status: Expired due to Fees

• Current Assignee: Permanent Technologies, Inc.
• Original Assignee: Permanent Technologies, Inc.
• Inventors: Stanley, Carl Richard, DiStasio, Robert J., Feick, William Kurt, Bowling, Stephen G.
• Primary Examiner(s): Saether, Flemming
• Application Number:
  US10/659,685
• Publication Number:
  US 20040047709A1
• Time in Patent Office: 643 Days
• Field of Search: 411/296, 411/299, 411254-256, 411326-329, 411/950, 411/951
• US Class Current: 411/329
• CPC Class Codes: C07C 213/10 Separation; Purification; Stabilisation; Use of additives
• CPC Class Codes: C07C 215/60 the chain having two carbon atoms between the amino groups and the six-membered aromatic ring or the condensed ring system containing that ring
• CPC Class Codes: C07C 217/30 having the oxygen atom of at least one of the etherified hydroxy groups further bound to a carbon atom of a six-membered aromatic ring
• CPC Class Codes: C07C 227/34 by separation of optical isomers
• CPC Class Codes: C07C 229/08 the nitrogen atom of the amino group being further bound to hydrogen atoms
• CPC Class Codes: C07C 269/08 Separation; Purification; Stabilisation; Use of additives
• CPC Class Codes: C07C 271/22 to carbon atoms of hydrocarbon radicals substituted by carboxyl groups
• CPC Class Codes: C07D 207/16 Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
• CPC Class Codes: F16B 39/32 Locking by means of a pawl or pawl-like tongue
• CPC Class Codes: Y10S 411/95 Rachet and nut-carried pawl
• CPC Class Codes: Y10S 411/951 Flexible

Abstract

The locking nut and bolt system utilizes a bolt with thread having a plurality of notches generally longitudinally spaced in a predetermined pattern. Each notch has a lock face and an opposing slope. The locking unit carries one or more tines. The tine has a distal tine end adapted to latch onto the lock face of the notch on the bolt and, when the distal tine end is not disposed in one or more notches, the tine end moves on the bolt thread crest. When the distal tine end is in the notch or notches, the lock face of the notch prevents counter-rotational movement of the bolt with respect to the nut when the distal tine end abuts the lock face. The locking unit supports the tine and may be cylindrical, rectangular or on a perpendicular support face normal to a radial plane through the axial centerline of the nut thread. The locking unit may be on a nut insert or may be carried on the leg of a U, J or S-shaped clip. The locking unit may be recessed as a blind hole.

Claims

1. A locking nut and bolt system comprising:

a bolt having a bolt stem along an axial centerline and a bolt thread formed on said bolt stem, said bolt thread defining bolt thread crests and bolt thread troughs;

a plurality of notches defined on said bolt thread generally longitudinally in a predetermined pattern with proximal notches being longitudinally adjacent each other on said bolt thread, each notch having a lock face and an opposing slope;

a nut having a nut thread defined in an internal passageway and an end face, said nut thread being complementary to said bolt thread;

a recess defined on said end face of said nut and a shoulder defined on a periphery of said recess below said nut end face;

a nut insert disposed in said recess on said shoulder, said nut insert having a planar body defined as a peripheral ring about said nut thread, said nut insert having at least one tine depending from said planar peripheral ring body in a substantially tangential plane with respect to said axial centerline of said bolt, said tine having a distal tine end adapted to latch on said lock face of said notch and a proximal tine portion adjacent said peripheral planar body of said nut insert;

said plurality of tines circumferentially disposed about a radially inward edge of said planar peripheral ring of said nut insert, each tine having a respective planar body which is generally tangentially disposed with respect to said axial centerline and said respective distal tine end angularly disposed and radially inwardly disposed away from said tine planar body;

said planar peripheral ring defining a radial free space axially there below in said nut recess such that said distal tine end of said axially tangential tine moves radially inward when said distal tine end is disposed in one or more notches and moves radially outward into said radial free space when said distal tine end rides on said bolt thread crest, and said lock face of said notch preventing counter-rotational movement of said bolt with respect to said nut when said distal tine end abuts said lock face.

2. A locking nut and bolt system as claimed in claim 1 wherein said planar peripheral ring defines one of a key and a keyway and said nut recess defines one of a complementary keyway and a complementary key thereby permitting circumferential alignment of said nut insert with respect to said nut.

3. A locking nut and bolt system as claimed in claim 1 wherein said nut insert includes a plurality of tines circumferentially disposed and wherein said planar peripheral ring of said nut insert includes a corresponding planar support plate for each of said plurality of tines, each said planar support plate extending radially inward toward said axial centerline thereby creating said radial free space for the radial movement of said tine there beneath and radially spacing said movable tine away from said shoulder of said recess.

4. A locking nut and bolt system as claimed in claim 3 wherein said planar peripheral plate includes an outer peripheral planar section from which extends said corresponding planar support plates, said outer peripheral planar section having a radial dimension substantially equivalent to said shoulder in said recess.

5. A locking nut and bolt system as claimed in claim 1 wherein said plurality of notches are longitudinally aligned.

6. A locking nut and bolt system as claimed in claim 1 wherein said plurality of notches are disposed in a spiral on said bolt thread.