IP Library Granted Patent US 12,320,095
Granted Patent B2
US 12,320,095 · App. 18/051,416 · Granted Jun 3, 2025

Work machine

Inventors: Hans Knapp (Bischofshofen, AT); Gerald Heugenhauser (Goldegg, AT); Reinhard Dengg (Tamsweg, AT); David Sagorz (Bad Hofgastein, AT)
Assignee: LIEBHERR-WERK BISCHOFSHOFEN GMBH
E02F9/0883B60L50/70E02F9/16E02F9/20B60L2200/40
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Quick Facts
Patent No.
US 12,320,095
App. No.
18/051,416
Granted
Jun 3, 2025
Kind
B2
Abstract

The present invention relates to a work machine, in particular a wheeled loader, having a cabin for the operator of the work machine and having an engine room arranged behind the cabin, wherein the work machine has a drive that is operable with hydrogen; and in that one or more tanks for the reception of hydrogen are present, with the tank or tanks being arranged in a hydrogen fuel system behind the cabin and above the engine room.

Claims (15)

1. A work machine, having a cabin for the operator of the work machine and having an engine room arranged behind the cabin, wherein the work machine has a drive that is operable with hydrogen; and wherein one or more tanks for the reception of hydrogen are present, with the tank or tanks being arranged in a hydrogen fuel system behind the cabin and directly above the engine room.

2. The work machine in accordance with claim 1 , wherein the engine room is configured as narrowed to improve the view of the machine operator.

3. The work machine in accordance with claim 2 , wherein the narrowing is present at one side or at both sides of the engine room.

4. The work machine in accordance with claim 2 , wherein no camera and/or sensor is/are arranged by means of which images or signals behind the work machine can be transmitted to the machine operator.

5. The work machine in accordance with claim 1 , wherein the hydrogen fuel system is suitable to store hydrogen in liquid and/or gaseous form and/or in bound form.

6. The work machine in accordance with claim 1 , wherein a structure is present that protects against mechanical influences and that at least partially surrounds the hydrogen fuel system.

7. The work machine in accordance with claim 1 , wherein a protective cladding is present that at least partially surrounds the hydrogen fuel system, and wherein the protective cladding extends up to a roof of the cabin and over an entire width of the cabin.

8. The work machine in accordance with claim 1 , wherein no other component of the work machine that may represent an ignition source is located above the hydrogen fuel system, the ignition source being a source where escaping hydrogen can be ignited.

9. The work machine in accordance with claim 1 , wherein the work machine has a fuel cell for the generation of electrical energy by means of hydrogen and/or has a hydrogen combustion engine.

10. The work machine in accordance with claim 1 , wherein the work machine does not have any combustion engine for diesel fuel or gasoline to drive the work machine.

11. The work machine in accordance with claim 1 , wherein the components of the hydrogen fuel system are not fixedly connected to the work machine, but are replaceable.

12. The work machine in accordance with claim 1 , wherein the hydrogen fuel system at least partially forms a preinstallation assembly, the preinstallation assembly being part of the hydrogen fuel system assembled before the parts are installed.

13. The work machine in accordance with claim 11 , wherein the hydrogen fuel system comprises one or more of the components of a tank for the receiving of hydrogen or containing hydrogen; valve; or piping.

14. The work machine in accordance with claim 1 , wherein the work machine has a combustion engine for diesel fuel or gasoline to drive the work machine in addition to the drive operable by hydrogen.

15. The work machine in accordance with claim 11 , wherein the hydrogen fuel system comprises one or more of the components of a tank for the receiving of hydrogen or containing hydrogen; valve; or piping.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 1, 2023
From: KNAPP, HANS; HEUGENHAUSER, GERALD; DENGG, REINHARD; SAGORZ, DAVID
To: LIEBHERR-WERK BISCHOFSHOFEN GMBH
Reel/Frame 062839/0837 →
Priority Claims (1)
DE 10 2021 130 374.5 · Nov 19, 2021 · national
Continuity (1)
Related Publication 20230167624A1 · Jun 1, 2023
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US 12,661,978