Patent ID: 6357338
Filing Date: 2002-03-19
Classification: F02B,F04B,Y10T

Abstract:
An apparatus comprising:an air compressor structure containing a piston in a cylinder; a motor having an output shaft; a flywheel; a bearing supporting said flywheel for rotation about an axis; a drive structure which transmits torque from said output shaft to said flywheel so as to rotate said flywheel about said axis upon rotation of said output shaft; a linkage structure interconnecting said flywheel with said piston so as to reciprocate said piston in said cylinder upon rotation of said flywheel; and a shaft extending along said axis between said flywheel and said bearing, said shaft having a first end portion journaled in said bearing for rotation about said axis, and a second end portion received within a bore in said flywheel with an interference fit forming a torque-transmitting connection between an outer surface of said shaft and an inner surface of said flywheel; said inner and outer surfaces having complementary tapered contours; said tapered contours being conical and tapered radially inward in a direction extending axially from said flywheel toward said bearing.