Patent ID: 7137497
Filing Date: 2006-11-21
Classification: F16D

Abstract:
1. A freewheel operable to rotate about an axis, comprising: an inner machine part and an an outer machine part, wherein the machine parts are operable to rotate respectively about the axis, and further wherein the inner machine part is arranged at least partially within the outer machine part, circumferential clamping tracks provided on the inner and the outer parts, wherein the circumferential clamping tracks are radially opposed and spaced apart, and further wherein one of the clamping tracks is smooth; an array of clamping ramps provided on the circumferential clamping track that opposes the smooth cylindrical clamping track, wherein the clamping ramps are circumferential; clamping rollers placed between the clamping tracks; a cage comprising two axially spaced rims and arranged between the machine parts; a plurality of circumferentially spaced apart webs joining the rims, the webs are profiled and include axially spaced apart and interconnected outer web sections extending parallel to the axis, the clamping ramps are formed between the webs; pockets included in the cage for the clamping rollers and at least one spring included in each of the webs for springing the clamping rollers against the smooth cylindrical clamping track; a positive locking connection formed with the cage and one of the machine parts to secure the cage from rotating while the other one of the machine parts rotates the positive locking connection comprises a central web section of the cage that extends parallel to the rotation axis of the freewheel, two intermediate web sections extending obliquely at respective opposite ends of the central web section, and each intermediate web section is placed at a respective one of the outer web sections.