Patent ID: 11964530
Assignee: CLEARMOTION, INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. An active motion control unit, comprising:
a first actuator with an internal volume and a first piston that is slidably received in the internal volume and travels along a first axis, wherein the first actuator is interposed between a first structure and a second structure;
a second actuator with an internal volume containing hydraulic fluid and a second piston with a second axis of travel, wherein a pressure of the hydraulic fluid induces a force on the second piston along the second axis of travel, wherein the second actuator is operatively connected to a spring element to form an assembly, wherein the assembly is operatively interposed between the first structure and the second structure;
a pressurized accumulator;
a hydraulic pump with a first port and a second port, wherein at least the first port is in fluid communication with the internal volume of the first actuator and the internal volume of the second actuator, and wherein the second port is in fluid communication with the pressurized accumulator; and
a low pass hydraulic filter that regulates fluid flow between the first port and the internal volume in the second actuator, wherein a response frequency of the second actuator is determined, at least in part, by the low pass filter.