Drive transmission sealing device

A drive transmission comprising:

• a slip yoke having an inner peripheral longitudinal bore extending through a central portion of said yoke, a space being defined on an outer peripheral surface on said yoke near one end of said bore;
• a shaft slidably received in said bore for axial movement relative to said yoke;
• a seal on said yoke and adjacent said one end of said bore, said seal having a mounting portion received within said space on said yoke and a sealing portion for sealingly engaging a portion of said shaft, said sealing portion sealingly engaging a portion of said shaft;
• and
• a substantially rigid cover received over said mounting portion of said seal, said shaft extending through said seal and said cover, said seal includes first and second spaced lips, said first and second lips extend radially inward and axially away from each other, a third lip is placed between said first and second lips.

A drive transmission comprising:

• a slip yoke having an inner peripheral longitudinal bore extending through a central portion of said yoke, a space being defined on an outer peripheral surface on said yoke near one end of said bore;
• a shaft slidably received in said bore for axial movement relative to said yoke;
• a seal on said yoke and adjacent said one end of said bore, said seal having a mounting portion received within said space on said yoke and a sealing portion for sealingly engaging a portion of said shaft, said sealing portion sealingly engaging a portion of said shaft;
• and
• a substantially rigid cover received over said mounting portion of said seal, said shaft extending through said seal and said cover, said seal includes first, second and third spaced lips, said first and second lips extend radially inward and axially away from each other, said cover includes a ridge portion that extends generally radially inward and axially away from said slip yoke and conforms to a portion of said third lip such that said ridge portion provides axial support to said third lip when said shaft moves axially relative to said yoke in one direction.