Patent ID: 11598331

Abstract:
A two-stage pump system is provided using electrostatic actuators. The system includes a pair of hydraulically-amplified, self-healing, electrostatic (HASEL) actuators in fluid communication with one another. Each actuator includes a deformable shell defining a working fluid compartment storing a dielectric fluid. Two electrodes are disposed on opposite sides of the deformable shell. A pair of fluid transfer bladders are disposed adjacent the respective pair of HASEL actuators, each including a fluid-impermeable membrane defining a transfer fluid chamber, and a biasing member disposed in the transfer fluid chamber. When individually actuated in an alternating two-stage pattern, the two electrodes of each respective HASEL actuator move from a neutral position to an attracted position, displacing dielectric fluid through the first transfer conduit and between working fluid compartments, thereby pumping the transfer fluid from an inlet to an outlet.