Sealing boot arrangement for a universal joint
AssigneeUni-Cardan Aktiengesellschaft
InventorsWerner Krude, Karl-Heinz Muller, Helmut Riemscheid
Life of this patent
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Abstract
A sealing arrangement for covering and sealing the open space in a constant velocity universal joint includes a sealing boot, one end of which is fastened to the driven part of the joint and the other end of the sealing boot extending axially from the universal joint is fastened to a sleeve which is axially displaceable and is arranged coaxially surrounding a drive shaft connected to the driving part of the joint. A coating of a material having dirt-repellent and/or water-repellent properties or permitting easy sliding is provided on the drive shaft at least in the range of axial displacement of the sleeve relative to the drive shaft.
Claims10
Sealing arrangement for covering and sealing the open space in a constant velocity universal joint, said universal joint comprising a driving part, a driven part circumferentially encircling said driving part, means for transmitting torque between said driving and driven parts, and drive shaft connected and extending axially from said driving part, a sealing boot assembly enclosing the open space of said universal joint and extending in the axial direction of said driving and driven parts, said sealing boot assembly includes an annular cap member attached to and extending axially from said driven part, a sealing boot having first and second ends, said first end fastened to said cap member, and a sleeve member connected to said second end, said sleeve member arranged coaxially surrounding said drive shaft and axially displaceable relative to said drive shaft, wherein the improvement comprises that said drive shaft has a coating thereon at least in the range of axial displacement of said sleeve member.
Dependencies are inferred from the claim text.