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:
Dec. 22, 2020
Filed:
May. 08, 2018
Sfs Intec Holding Ag, Heerbrugg, CH;
SFS intec Holding AG, Heerbrugg, CH;
Abstract
A ball screw drive () including a threaded spindle () having a first, free end () and a second end () which can be connected to a drive, and a spindle nut () at least partially enclosing the threaded spindle () coaxially. A plurality of balls () recirculate in the space between the threaded spindle () and the spindle nut () form the core element. An extension sleeve (), which connects coaxially to the spindle nut (), is fixedly connected to the latter and moves together with it relative to the threaded spindle (). At the first end () of the threaded spindle (), a substantially circular bearing ring () is attached to the outer circumference of the threaded spindle (), which circular bearing ring serves as a shaft bearing between the threaded spindle () and the extension sleeve () and which has a noise-dampening effect due to at least one integrated spring/damping element. This spring/damping element of the bearing ring () is preferably a combination of at least one notch () on the inner circumference of the bearing ring () and an annular gap ().