US 11,964,530 B2
Integrated multiple actuator electro-hydraulic units
Joseph Thomas Belter, Novi, MI (US); Clive Tucker, Charlestown, MA (US); Marco Giovanardi, Melrose, MA (US); Jack A. Ekchian, Belmont, MA (US); Zackary Martin Anderson, Cambridge, MA (US); and John A. Laplante, Concord, NH (US)
Assigned to ClearMotion, Inc., Billerica, MA (US)
Filed by ClearMotion, Inc., Billerica, MA (US)
Filed on Oct. 24, 2022, as Appl. No. 17/972,384.
Application 17/972,384 is a continuation of application No. 17/124,752, filed on Dec. 17, 2020, granted, now 11,541,713.
Application 17/124,752 is a continuation of application No. 16/065,338, granted, now 10,906,371, previously published as PCT/US2016/068558, filed on Dec. 23, 2016.
Claims priority of provisional application 62/330,619, filed on May 2, 2016.
Claims priority of provisional application 62/387,410, filed on Dec. 24, 2015.
Prior Publication US 2023/0249512 A1, Aug. 10, 2023
Int. Cl. B60G 17/016 (2006.01); B60G 7/00 (2006.01); B60G 17/027 (2006.01); B60G 17/033 (2006.01); B60G 17/04 (2006.01)
CPC B60G 17/0408 (2013.01) [B60G 7/006 (2013.01); B60G 17/016 (2013.01); B60G 17/027 (2013.01); B60G 17/0272 (2013.01); B60G 17/033 (2013.01); B60G 17/04 (2013.01); B60G 17/0416 (2013.01); B60G 2202/32 (2013.01); B60G 2202/413 (2013.01); B60G 2202/415 (2013.01); B60G 2202/416 (2013.01); B60G 2204/62 (2013.01); B60G 2400/91 (2013.01); B60G 2500/20 (2013.01); B60G 2500/30 (2013.01); B60G 2600/02 (2013.01); B60G 2600/182 (2013.01); B60G 2600/604 (2013.01); B60G 2600/68 (2013.01); B60G 2800/162 (2013.01); B60G 2800/9123 (2013.01); B60G 2800/916 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integrated motion control unit, comprising:
a first actuator that includes a housing with an internal volume separated into a compression volume and an extension volume by a double-acting piston and a piston rod attached to the double-acting piston;
a reversible hydraulic pump that has a first port that is in continuous fluid communication with the extension volume, and a second port that is in continuous fluid communication with the compression volume;
a first pressurized accumulator in fluid communication with the compression volume or the extension volume; and
a second actuator with a single-acting annular piston that extends radially and surrounds the housing of the first actuator along at least a portion of the axial length of the housing of the first actuator, wherein a volume of hydraulic fluid within the second actuator is separate from the internal volume of the first actuator.