Patent ID: 7784796

Claim:
A shaft sealing assembly for sealing a shaft interface from debris within a vehicle powertrain having a stationary transmission housing and a first rotatable shaft coaxially aligned with and circumscribed by a second rotatable shaft, the shaft interface being between the first and the second shafts, the assembly comprising: a primary seal and a secondary seal each formed at least partially of flexible sealing material, and each having a V-profile forming a pair of sealing lips and a secondary sealing cavity between the pair of sealing lips of each of the primary seal and the secondary seal; and a rotatable shaft sleeve having an inner sleeve and an outer sleeve forming a main cavity therebetween, the inner sleeve terminating in a sleeve foot that is press-fitted onto the first rotatable shaft such that a rotation of the first rotatable shaft directly rotates the rotatable shaft sleeve, wherein said rotatable shaft sleeve circumscribes the shaft interface, and wherein said main cavity at least partially encloses at least one of said primary and said secondary seals; wherein said secondary seal is positioned adjacent to said outer sleeve in contact therewith, and wherein said primary seal is positioned adjacent to said inner sleeve in contact therewith, said secondary seal circumscribing at least part of said primary seal to thereby minimize exposure of said primary seal to the debris.