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:
Jul. 12, 2016
Filed:
Dec. 02, 2011
Matthias Fick, Schnaittach, DE;
Heinz Schäfers, Erlangen, DE;
Matthias Fick, Schnaittach, DE;
Heinz Schäfers, Erlangen, DE;
SCHAEFFLER TECHNOLOGIES AG & CO. KG, Herzogenaurach, DE;
Abstract
A needle sleeve, in particular for pivotably mounting the throttle valve shaft of a control device for recirculating exhaust gas in internal combustion engines. The needle sleeve provides a thin-walled outer ring formed without cutting. A needle roller and cage assembly is inserted in the outer ring. The needle cage carries the bearing needles at uniform spacings in the circumferential direction. The needle sleeve has, at its axial sides, two radially inward facing ribs holding the needle roller and cage assembly in the outer ring and has multiple seals that seal the sleeve to prevent exhaust gas condensates from flowing through. The outer ring of the needle sleeve is a rimless, cylindrical sleeve, and the seals are two lip sealing rings having an S-shaped cross-sectional profile. The seals are located at least partially outside the outer ring and are pressed onto its axial edges, and provide the radially inward facing ribs.