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:
Jan. 01, 1980
Filed:
May. 03, 1978
Horst M Ernst, Eltingshausen, DE;
Armin Olschewski, Schweinfurt, DE;
Rainer Schurger, Schwanfeld, DE;
Lothar Walter, Schweinfurt, DE;
Manfred Brandenstein, Aschfeld, DE;
Erich Burkl, Stammheim, DE;
SKF Kugellagerfabriken GmbH, Schweinfurt, DE;
Abstract
In a rolling bearing for linear movement with respect to a shaft, the bearing has a sleeve, and axially extending guide rails on the inner and outer surfaces of the sleeve. Rolling elements are guided by the guide rails, and have concave spool-like central portions matched to the shaft, to provide linear contact therewith. The ends of the rolling elements are convexly curved to match the curvature of the inner surface of the sleeve, so that the inner surface of the sleeve forms a raceway for rolling elements under load. Grooves are provided in the lateral surfaces of the guide rails for guiding balls disposed between the ends of adjacent rolling elements. End caps on the bearing have turn-around guides for directing rolling elements between the inner raceways and the raceways for unloaded rolling elements along the outer surfaces of the sleeve.