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:
Mar. 02, 2004
Filed:
Mar. 15, 2002
Joachim Kottke, Remseck, DE;
Andreas Stihl AG & Co., Waiblingen, DE;
Abstract
An anti-friction bearing, especially for supporting a shaft ( ) of a gear case ( ), is provided for a portable handheld work apparatus. The anti-friction bearing has an inner race ( ) and an outer race ( ) surrounding the inner race ( ) at a radial distance ( ). Roller elements ( ) are arranged between the outer race ( ) and the inner race ( ). A cover disc ( ) is provided at the anti-friction bearing ( ) in order to prevent a passage of lubricant ( ) through the anti-friction bearing ( ). The cover disc ( ) extends radially from the inner race ( ) to an inner edge ( ) of the outer race ( ). The inner edge ( ) faces axially toward the roller elements ( ). A narrow radial gap ( ) is provided between the cover disc ( ) and the inner edge ( ). The axial elevation ( ) of a radial outer edge ( ) of the cover disc ( ) is equal to or less than the axial elevation ( ) of the inner edge ( ). The cover disc ( ) is connected seal-tight to the inner race ( ) and functions, during rotational operation of the anti-friction bearing, to throw off via centrifugal force lubricant striking the cover disc ( ). In this way, a passage of lubricant through the anti-friction bearing ( ) from the gear case is prevented.