Sealing assembly for universal joint

Claim 1

A sealing assembly for a universal joint including an inner joint member, an outer joint member, torque transmission means interposed between said inner and outer joint members, said torque transmission means including rolling members received in grooves of said inner and outer joint members, and a drive shaft connected in driving engagement with one of said inner and outer joint members, said sealing assembly comprising: a sleeve having a first end with a larger diameter and a second end with a smaller diameter, said first end of said sleeve being connected to the other of said inner and outer members; an annular groove formed in said drive shaft; a bush arranged to concentrically surround said drive shaft with a uniform radial distance therebetween; a sealing ring arranged within said annular groove between said bush and said drive shaft, said annular groove with said sealing ring arranged therein being located within an operating range of said bush thereby mounting said bush to be axially movable relative to said drive shaft within said operating range, said sealing ring operating as a contact seal relative to the inner diameter of said bush; and attachment means affixing said second smaller diameter end of said sleeve to the outer circumference of said bush.