Composite accumulator

An accumulator comprising:

• a base having a closed end and an open end, the base having an inner surface that defines a cavity and having a fluid port in communication with the cavity for communicating a hydraulic fluid in and out of the cavity;
• a cover disposed over the open end of the base, wherein the cover is secured to the base by a fastener;
• a piston disposed within the base and the cover, the piston sealed to the inner surface of the cover and translatable along an axis;
• a biasing member disposed within the base and the cover and located axially between the piston and the cover, the biasing member configured to bias the piston towards the base;
• a pressure sensor coupled to the base and in communication with the cavity;
• and
• a solenoid coupled to the base and in communication with the fluid port, the solenoid configured to control a flow of hydraulic fluid in and out of the cavity.

An accumulator comprising:

• a base having a closed end and an open end, the base having an inner surface that defines a cavity and having a fluid port in communication with the cavity for communicating a hydraulic fluid in and out of the cavity;
• a cover disposed over the open end of the base, wherein the cover is secured to the base by a fastener;
• a piston disposed within the base and the cover, the piston translatable along an axis, wherein the piston includes a face and an axially extended rim, and an outer diameter of the face is less than an outer diameter of the rim and the rim is sealed to the cover;
• a biasing member disposed within the base and the cover and located axially between the piston and the cover, the biasing member configured to bias the piston towards the base;
• a pressure sensor coupled to the base and in communication with the cavity;
• and
• a solenoid coupled to the base and in communication with the fluid port, the solenoid configured to control a flow of hydraulic fluid in and out of the cavity.