2results about "Oscillating piston engines" patented technology

Hydraulic device (15, 15A, 115, 215, 215A, 315, 415, 515, 615) including a first block (18), a second block (16), an oscillatory rotating body (30), a rotation restricting shaft (32), a first friction plate (56, 356, 456, 71), a second friction plate (55, 355, 455, 70) and a press mechanism. The first block (18) has a plurality of internal teeth (22). The second block (16) is configured to rotate relative to the first block (18). The oscillatory rotating body (30) has a plurality of external teeth (30a) smaller in number than the internal teeth (22), is provided inside the first block (18) such that the oscillatory rotating body (30) is oscillatorily rotatable, and has an inner circumferential portion. The internal teeth (22) and the external teeth (30a) define a working chamber (35a, 35b) therebetween. The rotation restricting shaft (32) extends from the inner circumferential portion of the oscillatory rotating body (30) in a direction intersecting a radial direction. The rotation restricting shaft (32) couples the oscillatory rotating body (30) and the second block (16) such that the oscillatory rotating body (30) and the second block (16) are not allowed to rotate relative to each other while allowing the oscillatory rotating body (30) to oscillatorily rotate. The first friction plate (56, 356, 456, 71) is configured to rotate together with the oscillatory rotating body (30). The second friction plate (55, 355, 455, 70) is restricted from rotating by the second or first block (18, 16). The press mechanism is configured to press the first and second friction plates (56, 356, 456, 71, 55, 355, 455, 70) against each other.