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. 07, 1999
Filed:
Jan. 19, 1999
Uwe Dehrmann, Wurzburg, DE;
Mannesmann Sachs AG, Schweinfurt, DE;
Abstract
A hydrodynamic torque converter has a converter circuit which is formed of an impeller wheel, a turbine wheel and a stator wheel. A driver for a piston of a lockup clutch is provided at the turbine wheel. The piston is rotatable in the circumferential direction and displaceable in the axial direction. The driver has at least one projection projecting in the direction of an associated recess in the piston in order to produce a connection forming a positive engagement in the circumferential direction while allowing a relative movement of the piston in the axial direction. The projection has at least two legs which are arranged at a distance from one another and extend at a predetermined angle relative to the circumferential direction. These legs are connected with one another, at least at their free ends, by a stiffener and have transmission surfaces at their sides remote of the stiffener. The transmission surfaces are provided for producing a working contact in each instance with an associated counter-surface of the recess of the piston, which counter-surface is adjacent to the transmission surface in the circumferential direction.