Patent ID: 8876133

Claim:
A suspension assembly for a vehicle, comprising: a gas spring, comprising: a tubular housing; a plunger positioned within the tubular housing, the plunger and an inner surface of the tubular housing defining a spring volume; a reservoir including a housing that defines an inner volume and a flexible member coupled to the housing, the flexible member separating the inner volume into a working volume and a control volume; and a conduit coupling the tubular housing to the reservoir such that the spring volume is in fluid communication with the working volume; and a valve assembly, comprising: a housing including a spring port in fluid communication with the spring volume, an accumulator port in fluid communication with the control volume, and a third port, the housing defining a first flow path extending between the third port and the spring port and a second flow path extending between the third port and the accumulator port; a first check valve having a first crack pressure positioned within the housing along the first flow path; and a second check valve having a second crack pressure positioned within the housing along the second flow path, wherein the valve assembly provides an offset pressure between the spring volume and the control volume to maintain a response curve of the gas spring for different ride heights of the vehicle.