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. 16, 2012
Filed:
Aug. 01, 2007
Johannes Andrianus Maria Duits, Bodegraven, NL;
Martin Voegelin, Hoelstein, CH;
Johannes Andrianus Maria Duits, Bodegraven, NL;
Martin Voegelin, Hoelstein, CH;
Aktiebolaget SKF, Göteborg, SE;
Abstract
Linear actuator device, comprising a housing (), an externally threaded screw (), a piston () and an internally threaded extended nut (), where the extended nut () comprises a plurality of longitudinal segments () having longitudinal edges () parallel to a center axis () of the internally threaded nut (), where each segment () has an identical radius of curvature and an angle of curvature of less than 360°, so that the circumference of the internally threaded nut () is formed by at least two segments (). One advantage of the invention is that linear actuators of different lengths can be manufactured in an easy and cost-effective manner.