公开(公告)号：US12241434B2

公开(公告)日：2025-03-04

申请号：US18228869

申请日：2023-08-01

Applicant: Caterpillar Inc.

Inventor： Curtis J Caldwell ,  Seth Ost ,  Brian Kacynski

IPC: B60L50/75 ,  E02F9/08 ,  F02M21/02

Abstract: A hydrogen fuel system for a work machine is disclosed. The hydrogen fuel system comprises a hydrogen storage tank containing hydrogen, the hydrogen being at least one of a liquid hydrogen or a gaseous hydrogen; a hydrogen power unit configured to consume the hydrogen from the hydrogen storage tank, the hydrogen power unit including at least one of a plurality of fuel cells or a hydrogen combustion engine; a boil-off pressure relief valve in fluid communication with the hydrogen storage tank; and a tank pressure sensor in communication with the boil-off pressure relief valve. The boil-off pressure relief valve is configured to, when the tank pressure sensor detects a pressure inside the hydrogen storage tank that exceeds a boil-off pressure threshold, vent the gaseous hydrogen to a boil-off fuel line fluidly connected to the hydrogen power unit.

公开(公告)号：US11053104B2

公开(公告)日：2021-07-06

申请号：US16433011

申请日：2019-06-06

Applicant: Caterpillar Inc.

Inventor： James Michael Dunn ,  Curtis J Caldwell ,  Sean D. Lawson ,  Dana John Willer

IPC: B66C23/64 ,  B66C23/44

Abstract: A boom for a pipelaying machine includes a pair of posts located in a first plane and disposed in a tapered configuration with respect to a second plane transverse to the first plane. The boom also includes a cross-brace disposed between the pair of posts and located partway along a length of the pair of posts. The cross-brace includes a first link member and a second link member disposed along the first plane. Further, each of the first and second link members are angularly offset from each other and the second plane respectively. Furthermore, ends of the first and second link members are rigidly attached to the pair of posts. The cross-brace further includes a first rib member and a second rib member disposed along the second plane and rigidly attached to the first link member and the second link member respectively.