# US 12,215,759 B2 · Shackle with positive locking pin mechanism

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- Number: US 12,215,759 B2
- Document ID: US12215759B2
- Status: Granted
- Kind: B2
- Application number: 17/971,581
- Filed: 2022-10-22
- Published: 2023-04-27
- Granted: 2025-02-04
- Earliest claimed: 2021-10-27
- Assignees: DEIS Products LLC
- Applicants: DEIS Products LLC
- Inventors: Joshua Z Gahr
- Web page: https://patentgrep.com/patent/US12215759B2

## CPC

- F16G 15/06: Shackles designed for attachment by joint pins to chain elements, e.g. D-shackles {so called harp links; the D-chain links are classified according to the corresponding kind of chain}
- F16B 21/165: {with balls or rollers (for connections of rods or tubes engaged telescopically F16B7/1409)}
- F16B 39/10: by a plate, {spring, wire} or ring immovable with regard to the bolt or object {and mainly perpendicular to the axis of the bolt}(F16B39/08 takes precedence)
- F16G: BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16B: DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING (couplings for transmitting rotation F16D)

## Abstract

A shackle having a body with a bow portion, and first and second end portions. Each end portion having a pin opening. A pin is configured to fit through the pin openings, and a nut is configured with at least one locking ball to engage with the pin. A method of operating the shackle.

## Claims

### Claim 1

A shackle apparatus comprising:
a body having a bow portion, and first and second end portions;
each end portion having a pin opening;
a pin configured to fit through the pin openings;
a nut configured with at least one locking ball to engage with the pin;
the nut comprising an inner sleeve and an outer sleeve;
wherein the outer sleeve is configured with a cylindrical body; and
wherein an inner surface of the cylindrical body is configured to hold the at least one locking ball in place to prevent rotation of the inner sleeve relative to the pin.

### Claim 2 (depends on 1)

The shackle apparatus of claim 1 wherein the pin is configured with at least one hole formed thereon to receive the at least one locking ball.

### Claim 3 (depends on 1)

The shackle apparatus of claim 1 wherein the pin comprises a head disposed at a first end and threads at a second end.

### Claim 4 (depends on 3)

The shackle apparatus of claim 3 wherein the pin is configured with at least one hole formed proximate the threads at the second end to receive the at least one locking ball.

### Claim 5 (depends on 3)

The shackle apparatus of claim 3 wherein the nut is configured with internal threads to connect with the threads at the second end of the pin.

### Claim 6 (depends on 1)

The shackle apparatus of claim 1 wherein the inner sleeve and the outer sleeve are slidingly engageable with one another for selective engagement and disengagement of the at least one locking ball with the pin.

### Claim 7 (depends on 1)

The shackle apparatus of claim 1 further comprising a spring disposed on the nut to exert an expansive force between the inner sleeve and the outer sleeve.

### Claim 8 (depends on 1)

The shackle apparatus of claim 1 wherein the at least one locking ball comprises a plurality of locking balls and the pin is configured with a plurality of holes formed thereon to receive the locking balls.

### Claim 9

A shackle apparatus comprising:
a body having a bow portion, and first and second end portions;
each end portion having a pin opening;
a pin configured to fit through the pin openings;
a nut configured with at least one locking ball for selective engagement with the pin to retain the nut on the pin;
the nut comprising an inner sleeve and an outer sleeve;
wherein the outer sleeve is configured with a cylindrical body; and
wherein an inner surface of the cylindrical body is configured to hold the at least one locking ball in place to prevent rotation of the inner sleeve relative to the pin.

### Claim 10 (depends on 9)

The shackle apparatus of claim 9 wherein the pin is configured with at least one hole formed thereon to receive the at least one locking ball.

### Claim 11 (depends on 9)

The shackle apparatus of claim 9 wherein the pin comprises a head disposed at a first end and threads at a second end.

### Claim 12 (depends on 11)

The shackle apparatus of claim 11 wherein the pin is configured with at least one hole formed proximate the threads at the second end to receive the at least one locking ball.

### Claim 13 (depends on 11)

The shackle apparatus of claim 11 wherein the nut is configured with internal threads to connect with the threads at the second end of the pin.

### Claim 14 (depends on 9)

The shackle apparatus of claim 9 wherein the inner sleeve and the outer sleeve are slidingly engageable with one another.

### Claim 15 (depends on 9)

The shackle apparatus of claim 9 wherein the at least one locking ball comprises a plurality of locking balls and the pin is configured with a plurality of holes formed thereon to receive the locking balls.

### Claim 16

A method of operating a shackle having a body with a bow portion and first and second end portions, comprising:
disposing a pin through a pin opening formed at each end portion of the body;
disposing a nut on the pin, wherein the nut is configured with at least one locking ball for selective engagement with the pin to retain the nut on the pin;
wherein the nut comprises an inner sleeve and an outer sleeve;
wherein the outer sleeve is configured with a cylindrical body; and
wherein an inner surface of the cylindrical body is configured to hold the at least one locking ball in place to prevent rotation of the inner sleeve relative to the pin.

### Claim 17 (depends on 16)

The method of claim 16 wherein the pin comprises a head disposed at a first end and threads at a second end.