Patent ID: 7946924
Filing Date: 2011-05-24
Classification: F16C,F16D,Y10T

Abstract:
1. A telescopable shaft assembly, comprising: at least two shaft elements capable of sliding in one another, said shaft elements including an inner shaft element and an outer shaft element; at least one sliding splined portion connecting said two shaft elements to one another in a torque transmitting manner, said sliding splined portion including an outer splined portion on said inner shaft element and an inner splined portion on said outer shaft element; an axial fixation forming a predetermined breaking point between said shaft elements, said axial fixation becoming ineffective once a predetermined impact force acting in a telescoping direction is reached; said shaft elements being movable relative to one another, once said axial fixation has become ineffective, in low-friction manner along said sliding splined portion under action of the impact force; wherein at least one bead formed in said sliding splined portion is configured to establish a predetermined force/travel profile over a displacement path for the displacing impact force, once said axial fixation has become unfastened.