Patent ID: 8578970

Claim:
A system comprising: a pressure regulator; and an accumulator bottle in fluid communication with the pressure regulator, the accumulator bottle comprising: a housing including: a hydraulic fluid chamber configured to receive a first fluid comprising a hydraulic fluid; a pressure compensation chamber configured to receive a second fluid; and an ambient pressure chamber configured to receive a third fluid from an environment in which the accumulator bottle is disposed; a first piston disposed in the hydraulic fluid chamber and configured to divide the hydraulic fluid chamber into a first region containing the first fluid and a second region in fluid communication with the pressure compensation chamber; and a second piston disposed in the ambient pressure chamber and configured to divide the ambient pressure chamber into a third region containing the third fluid and a fourth region in fluid communication with the pressure compensation chamber, wherein the second piston is configured to balance the pressure of the second fluid and the third fluid such that a biasing force applied to the first piston by the pressure of the second fluid is self-regulated by the accumulator bottle based at least in part on the ambient pressure of the environment in which the accumulator bottle is disposed.