Patent ID: 8529192
Filing Date: 2013-09-10
Classification: F04D,Y10T

Abstract:
1. A thrust shaft comprising: a shaft body having an enlarged disk at one axial end to provide a rotating surface in a thrust bearing; a first cylindrical portion extending from said disk, and a second cylindrical portion having a smaller diameter than said first cylindrical portion, said second cylindrical portion extending from said first cylindrical portion to an end of said shaft remote from said disk; and said shaft body having a hollow bore, with a ledge extending across said hollow bore at a location within said first cylindrical portion, and said ledge being formed with a central hole of a first hole diameter, and twelve holes spaced circumferentially about said central hole, said twelve holes being formed of a second hole diameter, with a ratio of said first hole diameter to said second hole diameter being between 2.55 and 2.71.