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:
Sep. 22, 2020
Filed:
Dec. 09, 2014
Applicant:
Aktiebolaget Skf, Gothenburg, SE;
Inventors:
Jerome Dubus, Aix Les Bains, FR;
Christian Boch, Chambery, FR;
Assignee:
Aktiebolaget SKF, Gothenburg, SE;
Primary Examiner:
Int. Cl.
CPC ...
F16H 25/22 (2006.01); F16H 25/14 (2006.01);
U.S. Cl.
CPC ...
F16H 25/2252 (2013.01); F16H 25/14 (2013.01);
Abstract
A planetary roller screw mechanism includes a screw shaft provided with at least one external thread, a nut provided with at least three internal threads and at least three rollers arranged, radially with respect to a central axis of the screw shaft, between the screw shaft and the nut. Each roller is provided with at least two external threads. The number of external threads of the screw shaft is a multiple of the number of external threads of a roller. The number of internal threads of the nut is a multiple of the number of external threads of a roller.