# US 7,744,148 B2 · Rotatable cab with toe guard

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- Number: US 7,744,148 B2
- Document ID: US7744148B2
- Status: Granted
- Kind: B2
- Application number: 11/315,285
- Filed: 2005-12-23
- Published: 2007-06-28
- Granted: 2010-06-29
- Earliest claimed: 2005-12-23
- Assignees: Caterpillar SARL
- Inventors: Jeremy A. Jones; Matthew J. Harrenstein
- Web page: https://patentgrep.com/patent/US7744148B2

## CPC

- B62D 33/067: tiltable
- B62D 33/0617: {for tractors or off-the-road vehicles (protective devices for drivers in case of overturning of tractors B60R21/131)}
- E02F 3/34: with bucket-arms {, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms (with a single arm E02F3/283)} directly pivoted on the frames of tractors or self-propelled machines
- E02F 9/166: {movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins (seats for vehicles in general B60N2/00)}
- B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M)
- E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00)

## Abstract

A machine cab includes a cab frame, a floor portion, a seat portion disposed proximate the floor portion, a rear portion disposed proximate the seat portion, side panels connected to the frame, a roof portion, and a toe guard connected to the floor portion and extending forward of the cab frame.

## Claims

### Claim 1

A machine cab, comprising:
a cab frame connected to a floor, a seat, a rear, a roof, side panels, a front door and a toe guard;
the floor disposed between the toe guard and the seat;
the seat disposed between the floor and the rear;
the front door disposed above the floor and toe guard, the toe guard disposed opposite the front door from the floor, the toe guard directly connected to the floor, the toe guard forming a forward extension of the cab frame beyond and below the front door; and
wherein the machine cab is configured to be pivotably mounted to a frame of a machine.

### Claim 2 (depends on 1)

The machine cab of claim 1, wherein the toe guard forms a bottom seal against the front door when the front door is in a closed position.

### Claim 3 (depends on 1)

The machine cab of claim 1, wherein the front door extends from the roof to the toe guard.

### Claim 4 (depends on 1)

The machine cab of claim 1, wherein the cab frame is formed of sheet metal.

### Claim 5 (depends on 1)

The machine cab of claim 1, wherein the cab frame, side panels, roof, seat, rear ,floor, toe guard, and the front door together form an integral enclosure.

### Claim 6

A skid steer loader, comprising:
a body,
a tool,
an arm assembly linking the tool to the body,
at least one tilt cylinder disposed proximate the tool and configured to orient the tool; and
a fully enclosed integral and rotatably mounted cab coupled to the body, the cab including a cab frame connected to a floor, a rear, a roof, side panels, a front door and a toe guard, the floor disposed between the toe guard and the rear, the front door disposed above the floor and toe guard, the toe guard disposed opposite the front door from the floor, the toe guard forming a forward extension of the cab frame beyond and below the front door.

### Claim 7 (depends on 6)

The skid steer loader of claim 6, including a plurality of tilt cylinders disposed on opposite sides of the cab.

### Claim 8 (depends on 6)

The skid steer loader of claim 6, wherein the cab is configured for rearward rotation.

### Claim 9

A cab for a machine, comprising:
a cab frame connected to a floor, a seat, a rear, a roof, side panels, a front door and a toe guard, the floor disposed between the toe guard and the rear, the front door disposed above the floor and toe guard, the toe guard disposed opposite the front door from the floor, the toe guard forming a forward extension of the cab frame beyond and below the front door; and
wherein the cab frame and toe guard are pivotably mounted to a frame of the machine.

### Claim 10 (depends on 9)

The cab of claim 9, wherein the frame, side panels, roof, seat, rear, floor toe guard and front door form an enclosure.

### Claim 11 (depends on 9)

The cab of claim 9, wherein the toe guard forms a bottom seal against the front door when the front door is in a closed position.

### Claim 12 (depends on 9)

The cab of claim 9, wherein the front door extends from the roof portion to the toe guard.

### Claim 13 (depends on 11)

The cab of claim 11, wherein the toe guard extends from the floor to the front door.

### Claim 14 (depends on 9)

The cab of claim 9, wherein the cab frame is formed of sheet metal.
