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:
Aug. 29, 2017
Filed:
Jul. 04, 2013
Schaeffler Technologies Gmbh & Co. KG, Herzogenaurach, DE;
Mario Kreutzer, Sonneberg, DE;
Dieter Adler, Herzogenaurach, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
A ball screw drive with a spindle nut () arranged on a screw spindle () and a continuous ball channel () formed by the screw spindle () and the spindle nut (), in which channel balls arranged along a continuous ball track () circulate continuously, wherein the continuous ball channel () includes a load channel () wound in a spiral shape, with more than one winding, about a spindle axis (S) and a deflecting channel () which continuously connects the two ends of the load channel () to one another, wherein the spindle nut () has a nut part (), on the inner circumference of which a ball groove () is formed being wound in a spiral shape about the spindle axis S, which ball groove, together with a ball groove () of the screw spindle () being wound in a spiral shape about the spindle axis S, forms the load channel (), and wherein a deflecting element () including the deflecting channel () is arranged on the outer periphery of the nut part (), and the deflecting ends () of the deflecting element () axially spaced apart from one another each penetrate a recess () through the thickness of the wall of the nut part (), in order to deflect balls from the load channel () into the deflecting channel (), and wherein the recess () has an unloading bore () connecting to the ball groove () of the nut part () and to the deflecting end () of the deflecting element () for unloading the balls, the axis of which unloading hole is arranged at a parallel distance to a plane (E) containing the spindle axis (S).