Antifriction bearing seal

Claim 1

In an antifriction bearing assembly including spaced relatively rotatable inner and outer race portions, said race portions each having a cylindrical surface facing the other race portion, one having a seal mounting groove therein and the other having a sealing groove therein, and a seal comprising a ringlike flexible member having an outer edge and an inner edge, one edge thereof being cooperatively mounted in said seal mounting groove for carrying of said seal by said race portion having said sEal mounting groove, said seal cooperating with said race portions to define one end of a sealed grease chamber between said race portions, said sealing groove being adjacent one end of said grease chamber, the edge of said seal opposite that received by said seal mounting groove being of a dimension to extend across said sealing groove and having an inner lip positioned for abutment with the inside wall of said sealing groove adjacent said sealing chamber and an outer lip positioned to overlie a portion of said cylindrical surface of said race portion having said sealing groove and at the opposite side thereof from that side which is adjacent said grease chamber, abutment of said inner lip of said sealing member with the inside wall of said sealing groove flexing at least the edge of said sealing member having said inner and outer lip portions to space apart said outer lip of said edge having said inner and outer lip portions from said cylindrical surface of said race portion which it overlies in a manner to define a labyrinth aperture between said outer lip and said outer cylindrical surface which it overlies.