Rolling screw
AssigneeARES Engineering S.R.L.
InventorGiancarlo Brun
Life of this patent
Estimating the term…
Abstract
Rolling screw (1) comprising a first threaded male member (6), a second threaded member (3), means (5) that permit said second threaded member (3) to rotate freely in relation to the housing (2), as well as means (7) that permit to maintain fixed and constant the position of the axis of said first threaded member (6) in relation to the housing (2). Means of synchronization are also foreseen for the relative rotation between said first member (6) and said second member (3). Said screw is characterized in that at least one of the two threaded members presents a threading conformation such to permit the transmission of the rotation motion to another element without relative tangential sliding action.
Claims15
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,
- and allowing axial sliding and rotation of said first threaded male member with respect to the housing;
- and coupling said first threaded male member and the 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
- one or more ring gears coaxial with the nut screw and configured to couple with the thread of said first threaded male member.
Dependencies are inferred from the claim text.