# US 8,464,443 B2 · Fixing device for a bucket front

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- Number: US 8,464,443 B2
- Document ID: US8464443B2
- Status: Granted
- Kind: B2
- Application number: 13/579,361
- Filed: 2011-02-14
- Published: 2013-01-31
- Granted: 2013-06-18
- Earliest claimed: 2010-02-17
- Assignees: Komatsu KVX LLC
- Applicants: Tor Torgrimsen
- Inventors: Tor Torgrimsen
- Web page: https://patentgrep.com/patent/US8464443B2

## CPC

- E02F 3/40: Dippers; Buckets {; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets (devices to connect tools to arms or booms E02F3/3604; teeth therefor E02F9/28)}
- E02F 9/2883: {Wear elements for buckets or implements in general}
- E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00)

## Abstract

A fixing device is for a bucket front, wherein the bucket front forms a wear part in an excavating bucket comprising at least one side portion. The side portion is formed with a coupling piece comprising at least two projections with recesses, wherein the projections fit in a complementary manner into recesses in the bucket front or in a coupling part fixed to the bucket front, and wherein the bucket front is connected to the coupling piece by a locking bolt extending, in the direction of the side portion, through openings associated with the side portion and the bucket front.

## Claims

### Claim 1

A fixing device for fixing a bucket from to an excavating bucket, the fixing device comprising:
a coupling piece engaged with a vertically extending sidewall of the excavating bucket, the coupling piece comprising a bottom surface having one of a plurality of projections and a complimentary plurality of recesses; wherein the other of the plurality of projections and plurality of recesses are formed in a top surface of the bucket front; and
a locking bolt that couples the bucket front to the side portion by retaining the plurality of projections in the plurality of recesses;
wherein a first plurality of aligned openings are formed in the plurality of projections and wherein a second plurality of aligned openings are formed in the bucket front, wherein the first plurality of aligned openings are interdigitated and aligned with the second plurality of aligned openings when the plurality of projections are disposed in the plurality of recesses, and wherein the locking bolt extends through the first and second pluralities of aligned openings.

### Claim 2

A fixing device for fixing a bucket front to an excavating bucket, the fixing device comprising:
a coupling piece that is coupled to a vertically extending sidewall of the excavating bucket, the coupling piece comprising a bottom surface having one of a plurality of projections and a complimentary plurality of recesses;
a coupling part that is coupled to and extends vertically upwardly from the bucket front, the coupling part comprising a top surface having the other of the plurality of projections and plurality of recesses; and
a locking bolt that couples the coupling piece to the coupling part to thereby couple the bucket front to the sidewall, the locking bolt retaining the plurality of projections in the complimentary plurality of recesses.

### Claim 3 (depends on 2)

The fixing device according to claim 2, comprising a corner strip projecting downwardly into a strip recess formed in the bucket front, the corner strip preventing the locking bolt from disengaging with the plurality of projections.