| 摘要 |
PURPOSE:To simplify a driving mechanism by providing plural cylinders and pistons on the outer periphery of a wheel and inserting piston pins into the rotation groove of a casing. CONSTITUTION:Plural cylinders 3 and pistons 4 are provided on the outer periphery of a wheel 2, with both ends of a piston pin 5 being projected out of the cut-out part of the cylinder 3. And, both ends ofeach piston pin 5 are fitted into a piston rotation groove 7 which is formed with rings 11, 12 on a housing case 1. By assembling the groove 7 eccentrically with the wheel 2 and, as the wheel 2 is rotated, air enters from an air intake port 8 and is sucked and compressed and dischrged out of an air dischrge port 9. Thereby, any large force such as for rotating a crankshaft as in the conventional case is not necessary.
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