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US 2024/0360846 A1Published application
Dual gas pressure accumulator system
AssigneeDeere & Company
InventorRandall A. Maro
Life of this patent
Estimating the term…
Abstract
The present disclosure is an accumulator that has an oil chamber, a first piston separating a first gas chamber from the oil chamber, and a second piston separating a second gas chamber from the oil chamber. The first and second piston are independently movable to alter the volume of the oil chamber.
Claims20
An actuator assembly, comprising:
- a rod configured to selectively move relative to a housing;
- an oil chamber;
- and
- a piston separating a first gas chamber from the oil chamber;
- wherein, the first gas chamber is at least partially defined in or around the rod.
2 more elements
An accumulator assembly, comprising:
- a rod configured to selectively move relative to a housing;
- an oil chamber configured to have a variable oil chamber volume to selectively reposition the rod relative to the housing;
- a first gas chamber defined in, or around, the rod and configured to have a variable first volume and to contain a first pre-charge pressure;
- and
- a piston separating the oil chamber from the first gas chamber.
2 more elements
An accumulator assembly, comprising:
- a hydraulic cylinder assembly defining a cylinder within which a rod is positioned and configured to selectively move relative to the cylinder;
- a first gas chamber defined in an annular cavity around the cylinder and the rod;
- an annular disk-shaped piston configured to slide along a radially outer wall of the cylinder to separate the first gas chamber from an oil chamber;
- a diaphragm accumulator defining a second gas chamber fluidly separated from the oil chamber by a diaphragm;
- wherein both the first gas chamber and the second gas chamber have a corresponding first valve and second valve coupled thereto to allow a pre-charge pressure in the corresponding first gas chamber and second gas chamber to be selectively altered.
2 more elements
Dependencies are inferred from the claim text.