Patent ID: 7921744
Filing Date: 2011-04-12
Classification: F16H,Y10T

Abstract:
1. A rolling screw comprising: a housing; a first threaded male member comprising a screw with a thread having one or more starts; a second threaded female member having a thread suitable for continuous coupling with said first threaded male member; first means for allowing the second threaded female member to rotate freely in relation to the housing and preventing axial and radial movements of the second threaded female member; second means for maintaining the axis position of said first threaded male member fixed and constant with respect to the housing and to maintain the axis of said first threaded male member parallel to and spaced from the rotation axis of said second threaded female member, third means for proving synchronization of the relative rotation between said first threaded male member and the second threaded female member; the threading of one of the two threaded members permitting transmission of the rotation from one of the threaded members to the other of the threaded members without relative tangential sliding, wherein said second threaded female member is a nut screw, said nut screw having internal threading with a nominal diameter greater than the threading of said first threaded male member, and