Patent US4826376A successfully refreshed from Google Patents.
US4826376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock nut and method for making same
Assignee: SLIP-ON LOCK NUT Co
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Filing: 1986-09-18
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Granted: 1989-05-02
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Expires: 2006-09-18
Abstract
Abstract A lock nut arrangement formed of a first and second generally C-shaped nut member which are joined together in a manner allowing limited axial movement and free rotation relative to one another about the axis were two members were initially threaded to central openings. The nut assembly may be radially installed on a threaded lock and locked thereon by rotating the nut members relative to one another. A lock nut is manufactured by first forming a first and second nut blanks, axially pressing the nut blanks together, clamping the nut blanks and threading the central bore, rotating the nut blanks relative to one another a predetermined distance and slotting the nut blanks.
Inventors
- 👤 James H. Aldridge
- 👤 Arvin H. Maitland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:59
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/08; F16B37/0871; F16B37/0892; B; B21; B21K; B21K1/00; B21K1/64; B21K1/70; B21K1/707; F16B39/00; F16B39/02; F16B39/12; F16C; F16C11/00; F16C11/04; F16C17/00; F16C17/10
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
58 words
A lock nut comprising: first and second generally C-shaped nut members, each having an internally threaded axial bore portion and a slot projecting radially from said bore portion, said nut members further provided with connection means for axially connecting the nut members to permit free relative rotation and limited axial displacement therebetween while preventing the total separation thereof.
Claim 2
Dependent Claim
58 words
A lock nut comprising: first and second generally C-shaped nut members, each having an internally threaded axial bore portion and a slot projecting radially from said bore portion, said nut members further provided with connection means for axially connecting the nut members to permit free relative rotation and limited axial displacement therebetween while preventing the total separation thereof.
Claim 3
Dependent Claim
38 words
The invention of claim 1 wherein said threads of the first and second members are in phase when said nuts have their slots aligned and are axially separated from one another 1/6 to 1/2 of a thread pitch.
Claim 4
Dependent Claim
50 words
The invention of claim 1 wherein said first and second nut members are provided with a concentric groove on one member and a corresponding concentric rib on the other member for telescopically corresponding with one another to limit radial movement therebetween while allowing a free rotation about the bore axis.
Claim 5
Dependent Claim
43 words
The invention of claim 3 wherein said connection means further comprises an undercut groove formed in one said nut members and a corresponding concentric nose for cooperating therewith formed in the other nut member to thereby limit axial displacement therebetween preventing complete separation.
Claim 6
Dependent Claim
23 words
The invention of claim 4 wherein said threaded axial bore has threads formed therein extending over 180° to 220° of the bore surface.
Claim 7
Dependent Claim
23 words
The invention of claim 2 wherein said threaded axial bore has threads formed therein extending over 180° to 200° of the bore surface.
Claim 8
Dependent Claim
20 words
The invention of claim 6 wherein said threaded axial bore of both nut members have approximately equal axial thread lengths.
Claim 9
Dependent Claim
27 words
The invention of claim 1 wherein said first and second nut members are provided with a peripherial edge having means for gripping the nut members formed thereon.
Claim 10
Dependent Claim
21 words
The invention of claim 8 wherein said first and second nut members have approximately equal axial lengths at the peripheral edge.
Claim 11
Dependent Claim
90 words
The invention of claim 1 wherein: said threads of the first and second nut members are in phase when said nuts have their slots aligned and are axially spaced 1/6 to 1/2 of a thread pitch; each of said nut members having threads extending over 180° to 200° of the bore surface and approximately equal axial thread lengths; and said first and second nut members further are provided with a groove on one nut member and a corresponding rib on the opposite nut member which telescopically interlock with one another.
Claim 12
Dependent Claim
69 words
The invention of claim 1 wherein the first and second members may be rotated relative to one another with a thread rod while cooperating between an unlock position where their respective slots are aligned, and a lock position where the nut members axially contact one another, have their threads generally aligned and in phase, and have their slots oriented approximately 180° apart, thereby securely attaching to the threaded end.
Claim 13
Independent Claim
150 words
The method of making a lock nut comprising the following steps: forming a first and second nut member blank each having a central axis and means for axially connecting the blank together; pressing the first and second nut blanks together while coaxially arranged, causing deformation to occur, thereby interlocking the two nut blanks together, enabling limited axial movement and free relative rotation therebetween; machining a tapped hole through the two nut blanks while said blanks are clamped together; rotating the first nut member 1/6 to 1/2 of a revolution relative to the second nut member in a direction opposite the direction of the machine threads when viewing the first nut member along the central axis; and machining a slot in the two nut members while clamped together, said slot extending radially outward from threaded hole to the periphery of said nut members to form two generally C-shaped interlocked nut members.
Claim 14
Independent Claim
150 words
The method of making a lock nut comprising the following steps: forming a first and second nut member blank each having a central axis and means for axially connecting the blank together; pressing the first and second nut blanks together while coaxially arranged, causing deformation to occur, thereby interlocking the two nut blanks together, enabling limited axial movement and free relative rotation therebetween; machining a tapped hole through the two nut blanks while said blanks are clamped together; rotating the first nut member 1/6 to 1/2 of a revolution relative to the second nut member in a direction opposite the direction of the machine threads when viewing the first nut member along the central axis; and machining a slot in the two nut members while clamped together, said slot extending radially outward from threaded hole to the periphery of said nut members to form two generally C-shaped interlocked nut members.
Claim 15
Dependent Claim
61 words
The invention of claim 12 wherein said step of forming a first and second nut member blanks further comprises the steps of forming a first nut member blank having a circumaxial recess formed therein, and forming a second nut member blank having a corresponding circumaxial rib projecting therefrom sized to telescopically insert within a recess in the second nut member blank.
Claim 16
Dependent Claim
19 words
The invention of claim 13 further comprising the step of deburring the lock nut assembly to remove sharp edges.
Claim 17
Dependent Claim
21 words
The invention of claim 14 further comprising the step of the electro-chemically plating the lock nut assembly to provide anti-corrosive coating.
Claim 18
Independent Claim
135 words
The method of making a lock nut comprising the following steps: forming a first and second nut member blank each having a central axis and means for axially connecting the blank together; pressing the first and second nut blanks together while coaxially arranged, causing deformation to occur, thereby interlocking the two nut blanks together, enabling limited axial movement and free relative rotation therebetween; inserting a spacer between the first and second nut members to axially separate them apart 1/6 to 1/2 of a thread pitch; machining a tapped hole through the two nut blanks while said blanks are clamped together; and machining a slot in the two nut members while clamped together, said slot extending radially outward from threaded hole to the periphery of said nut members to form two generally C-shaped interlocked nut members.
Claim 19
Independent Claim
135 words
The method of making a lock nut comprising the following steps: forming a first and second nut member blank each having a central axis and means for axially connecting the blank together; pressing the first and second nut blanks together while coaxially arranged, causing deformation to occur, thereby interlocking the two nut blanks together, enabling limited axial movement and free relative rotation therebetween; inserting a spacer between the first and second nut members to axially separate them apart 1/6 to 1/2 of a thread pitch; machining a tapped hole through the two nut blanks while said blanks are clamped together; and machining a slot in the two nut members while clamped together, said slot extending radially outward from threaded hole to the periphery of said nut members to form two generally C-shaped interlocked nut members.
Claim 20
Dependent Claim
20 words
The invention of claim 16 further comprising a step of unclamping said nut members and removing the spacer inserted therebetween.
Claim 21
Dependent Claim
19 words
The invention of claim 16 further comprising the step of deburring the lock nut assembly to remove sharp edges.
Claim 22
Dependent Claim
20 words
The invention of claim 16 further comprising the step of electro-chemically plating the lock nut assembly to provide anti-corrosive coating.
Claim 23
Dependent Claim
61 words
The invention of claim 17 wherein said step of forming a first and second nut member blank further comprises the steps of forming a first nut member blank having a circumaxial recess formed therein and forming a second nut member blank having a corresponding circumaxial rib projecting therefrom sized to telescopically insert within a recess in the second nut member blank.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |