Patent ID: 7845268
Filing Date: 2010-12-07
Classification: F15B,F16K

Abstract:
1. An asymmetric volume booster assembly, comprising: an actuator movable in a first direction and a second direction, the actuator including a piston inside of an actuator cylinder, the piston dividing the cylinder into a first chamber and a second chamber, a piston rod extending from the piston through the second chamber; a first booster in fluid communication with the first chamber of the actuator, the first booster including both a supply passage and an exhaust passage, wherein the supply passage supplies fluid to the first chamber of the actuator and the exhaust passage exhausts fluid from the first chamber of the actuator; a first supply valve disposed in the first booster for controlling fluid flow through the first booster and toward the first chamber of the actuator; a second booster in fluid communication with the second chamber of the actuator, the second booster including a supply passage and an exhaust passage, wherein the supply passage supplies fluid to the second chamber of the actuator and the exhaust passage exhausts fluid from the second chamber of the actuator; a second supply valve disposed in the second booster for controlling fluid flow through the second booster and toward the second chamber of the actuator; wherein the first supply valve has a higher fluid flow resistance than the second supply valve.