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:
Oct. 08, 2002
Filed:
Jun. 29, 2001
Andries Christian Rinsma, Nieuw Amsterdam, NL;
Johannes Albertus Van Winden, Heidelberg, DE;
SKF Engineering & Research Centre B.V., Nieuwegein, NL;
Abstract
A system for controlling an assembly of an electrical motor and a rotation-translation converter is provided. The rotation-translation converter is connected to the electrical motor. The electrical motor is energized with a predetermined current for obtaining a torque to overcome an internal friction of the rotation-translation converter. The current is increased until the electrical motor provides a total torque. The total torque is converted by the rotation-translation converter into a predetermined force on an object or into a displacement of the object. The object is moveable by the rotation-translation converter. The system may also reduce the current through the electrical motor after reaching the predetermined force to a predetermined current value. Under this predetermined current value, the predetermined force on the object remains substantially equal.