# US 12,006,195 B2 · Reach truck having a counterweight

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- Number: US 12,006,195 B2
- Document ID: US12006195B2
- Status: Granted
- Kind: B2
- Application number: 16/255,171
- Filed: 2019-01-23
- Published: 2019-07-25
- Granted: 2024-06-11
- Earliest claimed: 2018-01-24
- Assignees: Jungheinrich Aktiengesellschaft
- Applicants: Jungheinrich Aktiengesellschaft
- Inventors: Frank Lemke
- Web page: https://patentgrep.com/patent/US12006195B2

## CPC

- B66F 9/07554: {Counterweights}
- B66F 9/07: Floor-to-roof stacking devices, e.g. "stacker cranes", "retrievers"
- B66F 9/07568: {Steering arrangements}
- B66F 9/0759: {Details of operating station, e.g. seats, levers, operator platforms, cabin suspension}
- B66F 9/10: movable in a horizontal direction relative to truck
- B66F: HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD ({invalid lifting devices A61G7/10; } mounting artificial islands on piles or like supports E02B17/00; scaffolding combined with lifting devices E04G1/22; lifting devices for sliding forms E04G11/24; lifting of buildings E04G23/06; shores or struts E04G25/00; lifts or other hoisting devices on ladders E06C7/12; props for mining E21D15/00)

## Abstract

A reach truck comprises two wheel arms each coupled to a load wheel, a thrust mast positioned between the wheel arms, a drive unit comprising a steerable drive wheel, and a counterweight comprised of cast iron and positioned in a front region of the reach truck. The counterweight comprises at least one of: (a) a step positioned on a front side of the reach truck at a mid-height of the counterweight and comprising a horizontal tread having a front edge; (b) two fastening apparatuses positioned on opposite sides of an underside of the counterweight, wherein a supporting element is fastened to each of the two fastening apparatuses; and (c) a splashguard positioned on an underside of the counterweight, wherein the splashguard surrounds the steerable drive wheel forming a ring and positioned away from a lateral edge of the counterweight.

## Claims

### Claim 1

A reach truck comprising:
two wheel arms each coupled to a load wheel;
a thrust mast positioned between the wheel arms and moveable in a longitudinal direction relative to the two wheel arms;
a drive unit comprising a steerable drive wheel; and
a counterweight comprised of cast iron and positioned in a front region of the reach truck, wherein the counterweight comprises,
two fastening apparatuses formed on opposite sides of an underside of the counterweight,
a supporting element fastened to each of the two fastening apparatuses, wherein the supporting elements are adapted to support themselves on a ground at a specific inclination of the reach truck in order to prevent the reach truck from tipping over,
and
a base frame comprising a welded assembly that includes,
the two wheel arms, and
a horizontally arranged bottom plate,
wherein the counterweight is connected to the welded assembly and the horizontally arranged bottom plate of the welded assembly is positioned at least partially below the counterweight.

### Claim 2 (depends on 1)

The reach truck according to claim 1, further comprising a driver cab comprising a supporting structure, wherein the counterweight comprises a fastening means configured to fasten to the supporting structure.

### Claim 3 (depends on 1)

The reach truck according to claim 1, wherein the counterweight forms a front end of the reach truck.

### Claim 4 (depends on 3)

The reach truck according to claim 3, wherein the counterweight extends over a width of the reach truck.

### Claim 5 (depends on 1)

The reach truck according to claim 1, wherein the counterweight forms a contour of a front side of the reach truck at a height of a tread and a front edge of the tread follows the contour.

### Claim 6 (depends on 5)

The reach truck according to claim 5, wherein the tread is delimited laterally and backwards by a substantially vertically arranged surface of the counterweight.

### Claim 7 (depends on 6)

The reach truck according to claim 6, wherein the tread measured in a longitudinal direction of the reach truck has a variable depth having a maximum value in a middle portion of the front edge and decreasing more quickly towards a side of the reach truck on which a driver seat is positioned than in an opposite direction.

### Claim 8 (depends on 1)

The reach truck according to claim 1, wherein the counterweight further comprises a skirt positioned on at least one of a lateral edge and a front edge of the counterweight, and wherein the skirt and splashguard extend downwards from a lower, substantially planar surface of the counterweight.

### Claim 9 (depends on 8)

The reach truck according to claim 8, wherein the splashguard and the skirt extend downwards to a bottom plate.

### Claim 10 (depends on 9)

The reach truck according to claim 9, wherein the splashguard comprises a forward-facing opening which is sealed by a drive wheel cover that is fastened to the counterweight.

### Claim 11 (depends on 10)

The reach truck according to claim 10, wherein the drive wheel cover is comprised of cast iron.

### Claim 12 (depends on 1)

The reach truck according to claim 1, wherein a mid-height is 15 cm to 35 cm above a surface on which the reach truck is situated.

### Claim 13 (depends on 1)

The reach truck according to claim 1, wherein the counterweight comprises a step positioned on a front side of the reach truck at a mid-height of the counterweight and comprising a horizontal tread having a front edge.

### Claim 14 (depends on 1)

The reach truck according to claim 1, wherein the counterweight further comprises a splashguard positioned on an underside of the counterweight, wherein the splashguard surrounds the steerable drive wheel forming a ring and positioned away from a lateral edge of the counterweight, wherein the splashguard extends downwards from a lower, substantially planar surface of the counterweight.

### Claim 15 (depends on 1)

The reach truck according to claim 1, wherein the bottom plate is comprised of steel.
