The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 2006
Filed:
Mar. 20, 2003
Laurent Benoit, La Chavanne, FR;
Laurent Benoit, La Chavanne, FR;
Transrol, Chamberry Cedex, FR;
Abstract
Actuator device comprising a support (); a longitudinal drive rod (), part of the rear end () of which is mounted and rotates inside the support, and of which a front end section () has an external screw thread () and on its annular section, gear teeth (); a longitudinal sheath () positioned around and coaxially to the drive rod has an internal screw thread; a series of rollers () positioned longitudinally between the drive rod and the sheath and having an external screw thread engaged with the external screw thread of the drive rod and with the internal screw thread of the sheath, and gear teeth engaged with the gear teeth of the drive rod. The helix angle of the screw thread of the rollers is equal to the screw thread helix angle of the screw thread of the drive rod, and different from the helix angle of the screw thread of the sheath.