US 11,867,285 B2
Systems and methods for pressurizing transmission charge oil
Michael J. Cliff, Coffeyville, KS (US); and Benjamin K. Dollins, Independence, KS (US)
Assigned to Deere & Company, Moline, IL (US)
Filed by DEERE & COMPANY, Moline, IL (US)
Filed on Feb. 7, 2023, as Appl. No. 18/165,488.
Application 18/165,488 is a continuation of application No. 16/911,507, filed on Jun. 25, 2020, granted, now 11,662,017.
Prior Publication US 2023/0184324 A1, Jun. 15, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16H 61/00 (2006.01); F16H 63/30 (2006.01)
CPC F16H 61/0031 (2013.01) [F16H 63/3023 (2013.01); F16H 2061/0034 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system for pressurizing a fluid used to perform an operation of a machine, the system comprising:
a source of a pressurized first fluid; and
an accumulator in fluid communication with the pressurized first fluid, the accumulator containing a gas that is compressible in response to the pressurized first fluid, a second fluid flowable from the accumulator in response to the compressed gas to a machine to facilitate an operation of the machine,
wherein the accumulator comprises:
a body defining an interior cavity; and
a piston disposed in the interior cavity and movable therein, the piston dividing the interior cavity into a first segment in fluid communication with the pressurized first fluid, a second segment in fluid communication with the second fluid, and a third segment that contains the compressed gas,
wherein the interior cavity comprises:
a first portion defining a first cross-sectional size, the first cross-sectional size corresponding to a first cross-section that is perpendicular to a direction of movement of the piston within the interior cavity; and
a second portion opposite the first portion defining a second cross-sectional size greater than the first cross-sectional size, the second cross-sectional size corresponding to a second cross-section that is perpendicular to the direction of movement of the piston,
wherein the piston comprises a first end portion disposed in the first portion of the interior cavity, and
wherein the piston comprises a second end portion disposed in the second portion of the interior cavity.