# US 2025/0146252 A1 · Operator platform suspension with lower reaction bumper

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- Number: US 2025/0146252 A1
- Document ID: US20250146252A1
- Status: Published application
- Kind: A1
- Application number: 18/935,518
- Filed: 2024-11-02
- Published: 2025-05-08
- Earliest claimed: 2023-11-02
- Applicants: Doosan Bobcat North America Inc.
- Inventors: Casey Jahner; Thomas Tokach
- Web page: https://patentgrep.com/patent/US20250146252A1

## CPC

- E02F 9/166: {movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins (seats for vehicles in general B60N2/00)}
- E02F 3/3414: {the arms being pivoted at the rear of the vehicle chassis, e.g. skid steer loader}
- E02F 9/0808: {Improving mounting or assembling, e.g. frame elements, disposition of all the components on the superstructures (for disposition of specific components, E02F9/0858)}
- E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00)

## Abstract

An apparatus is configured for attachment to a power machine. The apparatus includes first and second side plates, a lower plate, a platform assembly and a first bumper. Each of the first and second side plates is configured for pivotal attachment to the power machine at a first pivot joint. The lower plate has a fixed orientation relative to each of the first and second side plates. The platform assembly comprises a platform and a frame, wherein the frame is attached to each of the first and second side plates at a second pivot joint. The first bumper is disposed between the platform and the lower plate. An exemplary method of supporting a load applied on an apparatus of a power machine includes applying the load onto the platform and compressing the first bumper between the platform and the lower plate.

## Claims

### Claim 1

An apparatus configured for attachment to a power machine, the apparatus comprising:
first and second side plates, each of the first and second side plates configured for pivotal attachment to the power machine at a first pivot joint;
a lower plate having a fixed orientation relative to each of the first and second side plates;
a platform assembly comprising a platform and a frame, the frame attached to each of the first and second side plates at a second pivot joint; and
a first bumper disposed between the platform and the lower plate.

### Claim 2 (depends on 1)

The apparatus of claim 1 comprising a front plate having a fixed orientation relative to each of the first and second side plates.

### Claim 3 (depends on 2)

The apparatus of claim 2 comprising a second bumper attached to the front plate.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the lower plate comprises a plurality of attachment features configured for selective attachment of the first bumper.

### Claim 5 (depends on 1)

The apparatus of claim 1 comprising an upper plate disposed between the platform and the first bumper.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the first bumper is tubular.

### Claim 7

A method of supporting a load applied on an apparatus of a power machine, wherein the apparatus comprises:
first and second side plates, each of the first and second side plates configured for pivotal attachment to the power machine at a first pivot joint;
a lower plate having a fixed orientation relative to each of the first and second side plates;
a platform assembly comprising a platform and a frame, the frame attached to each of the first and second side plates at a second pivot joint; and
a first bumper disposed between the platform and the lower plate;
the method comprising:
applying the load onto the platform; and
compressing the first bumper between the platform and the lower plate.

### Claim 8 (depends on 7)

The method of claim 7 comprising pivoting the platform assembly about the second pivot joint relative to the first and second side plates.

### Claim 9 (depends on 7)

The method of claim 7, wherein the apparatus comprises a second bumper disposed between a front plate and frame of the power machine, the method comprising compressing the second bumper.

### Claim 10 (depends on 7)

The method of claim 7, wherein the lower plate comprises a plurality of attachment features, the method comprising selectively attaching the first bumper to one of the plurality of attachment features.