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. 10, 2010
Filed:
May. 10, 2006
Rudolf Kauffeldt, Einzisweller, DE;
Rudolf Kauffeldt, Einzisweller, DE;
ZF Transmission Technologies, L.L.C., Batavia, OH (US);
Abstract
A pressure supply between a variator shaft and a pressure chamber () for the axial displacement of the mobile disc of a pair of conic pulleys of a continuously adjustable automatic transmission, which includes a longitudinal borehole () and radial boreholes () in a variator shaft (), as well as a radial borehole () in the locating disc. For each pressure chamber () there are at least two piercing radial boreholes made in the variator shaft, which are axially shifted from each other and rotated approximately 90° between themselves. The oil can run over the longitudinal borehole of the variator shaft and over the radial boreholes through the radial borehole in a locating disc of a pressure chamber (), in such a way that the oil flow is always ensured regardless of the axial position or of the tangential location of the locating disc regarding the variator shaft.