Abstract: An energy conversion system including an annular member disposed around a shaft and at least partially defining a first radial flow passage that is fluidly coupled to a wave chamber and a second radial flow passage that is fluidly coupled to a port; a first plurality of nozzle vanes extending at least partially through the first radial flow passage, and configured to impart a first exit swirl angle in a fluid; a turbine wheel coupled to the shaft, disposed radially between the shaft and the annular member, defining an axial flow passage that is fluidly coupled to the first and second radial flow passages, and including a first plurality of impulse blades; and a second plurality of nozzle vanes disposed around the shaft, extending at least partially through the second radial flow passage, and configured to impart a second exit swirl angle in the fluid.

Abstract: A direction-switchable pneumatic cylinder includes: a cylinder body with two intakes, several exhaustion ports and a rotary shaft; and a predetermined number of movable wheels and fixed wheels arranged in the cylinder body and interlaced with each other. Each of the movable wheels and fixed wheels is formed with several vents concentrically arranged into an inner circle and an outer circle. The rotary shaft is fitted through the movable wheels and fixed wheels. The fixed wheels are not rotatable, while the movable wheels are synchronously rotatably with the rotary shaft. The outer circles of vents of the fixed wheels and the movable wheels are aligned with one intake, while the inner circles of vents of the fixed wheels and the movable wheels are aligned with the other intake. When high-pressure gas is guided into the pneumatic cylinder from one intake, the airflow will flow through the outer circles of vents to drive the movable wheels and the rotary shaft in one direction.

Abstract: An automatic tool changing assembly for a machine tool has a bottom frame, a base, a cylinder block, an air motor and an air transporting device. The bottom frame is securely mounted on the machine tool and has a bottom panel, two sliding bars and a spring. The base is movably mounted on the bottom frame above the bottom panel and abutting the spring. The cylinder block is securely mounted on the base and has a piston rod, a piston disk and an air cylinder. The air motor is securely mounted on the base and has a cylinder, a jacket, a mounting groove and a cylinder tube. The air transporting device is mounted in the air motor and has a mounting tube, a first compression ring, a first sealing ring, a middle compression ring, a second sealing ring, a second compression ring, a mounting axle and an axle spring.

Abstract: A membrane seal for a multi-part fluid pump housing discharging windshield washer fluid from reservoir includes a one-piece, rigid carrier and a resilient seal member molded onto the rigid member to seal two pump housing parts. Resilient material also over molded over at least one flow aperture in the carrier to form a check valve to control fluid flow between an inlet and an outlet of the pump housing. Resilient material also is molded over another aperture in the carrier to form a pump motor shaft seal. In a construction method, the resilient material forming the peripheral seal, the check valve and the pump motor shaft seal is over molded in a single process step over the carrier.