Patent ID: 8678937
Filing Date: 2014-03-25
Classification: F16D,Y10T

Abstract:
1. A shaft coupling comprising: a tubular portion extending along a central axis and having an outer surface and a hollow interior, said hollow interior defining a maximum inner diameter; a first set of internal splines positioned in said tubular portion; a dam extending radially inward from an inner surface of said tubular portion and into said hollow interior, said dam defining a radial top surface positioned inwardly beyond said maximum inner diameter of said tubular portion and said dam spaced from said first set of internal splines along said central axis; and at least one aperture for receiving lubricant for said first set of internal splines and extending from said outer surface of said tubular portion to said hollow interior, said at least one aperture arranged along an aperture axis transverse to said central axis, wherein a cross-sectional area of said at least one aperture decreases along at least part of said aperture axis, wherein said at least one aperture extends between an entry port positioned at said outer surface of said tubular portion and an exit portion opening into said hollow interior, said entry port being larger than said exit port.