# US 2013/0152431 A1 · Rigging assembly for a dragline excavator

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- Number: US 2013/0152431 A1
- Document ID: US20130152431A1
- Status: Published application
- Kind: A1
- Application number: 13/511,947
- Filed: 2010-11-10
- Published: 2013-06-20
- Earliest claimed: 2009-11-26
- Assignees: Cqms Pty Ltd
- Inventors: Murray Graham Buhse
- Web page: https://patentgrep.com/patent/US20130152431A1

## CPC

- E02F 3/58: Component parts {(E02F9/14, E02F3/905 take precedence)}
- E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00)

## Abstract

A rigging assembly for a dragline excavator where the rigging assembly has a first upper hoist link and a second upper hoist link. The rigging assembly also has an equalization member extending between the first upper hoist link and the second upper hoist link. The equalization member is formed from a flexible material.

## Claims

### Claim 1

A rigging assembly for a dragline excavator, the rigging assembly comprising:
a first upper hoist link;
a second upper hoist link; and
an equalization member extending between the first upper hoist link and the second upper hoist link;
wherein, the equalization member is formed from a flexible material.

### Claim 2 (depends on 1)

The rigging assembly of claim 1, wherein the equalization member is rotatably secured at an end thereof to the first upper hoist link and is rotatably secured at an opposing end thereof to the second upper hoist link.

### Claim 3 (depends on 1)

The rigging assembly of claim 1, wherein the equalization member is rotatably secured at either end thereof to a clevis arm of a respective upper hoist link.

### Claim 4 (depends on 1)

The rigging assembly of claim 1, wherein the equalization member is rotatably secured at either end thereof to a clevis arm of a respective upper hoist link by way of a pin.

### Claim 5 (depends on 3)

The rigging assembly of claim 3, wherein a link of an upper hoist chain is secured to the clevis arm of each of the upper hoist links.

### Claim 6 (depends on 1)

The rigging assembly of claim 1, wherein the equalization member is of a unitary construction.

### Claim 7 (depends on 1)

The rigging assembly of claim 1, wherein the equalization member has a shaft and a clevis arm located at opposing ends of the shaft.

### Claim 8 (depends on 1)

The rigging assembly of claim 1, wherein the equalization member is formed from linked chain.

### Claim 9

A rigging assembly for a dragline excavator, the rigging assembly comprising:
a first upper hoist link;
a second upper hoist link;
an equalization member extending between the first upper hoist link and the second upper hoist link, the equalization member secured at an end thereof to the first upper hoist link by way of a retainer and secured at an opposed end thereof to the second upper hoist link by way of a retainer;
an upper hoist chain secured to the first upper hoist link by way of the respective retainer;
a further upper hoist chain secured to the second upper hoist link by way of the retainer.