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:
Nov. 05, 2013
Filed:
Jun. 15, 2011
Franz Binder, Lenting, DE;
Jürgen Sendtner, Denkendorf-Zandt, DE;
Knut Bartsch, Ebersberg, DE;
Manfred Schindler, Markt Schwaben, DE;
Franz Sinseder, Dorfen, DE;
Franz Binder, Lenting, DE;
Jürgen Sendtner, Denkendorf-Zandt, DE;
Knut Bartsch, Ebersberg, DE;
Manfred Schindler, Markt Schwaben, DE;
Franz Sinseder, Dorfen, DE;
Audi AG, Ingolstadt, DE;
Abstract
An apparatus for spring-assisted pivoting a liftgate or door against gravity between a closed position and an open position includes a torsion bar spring system with springs arranged in parallel in a meander pattern and connected with one another in fixed rotative engagement. An outer bearing-torsion bar spring and another outer lever-torsion bar spring are each supported in a support bracket of a tracker. The lever-torsion bar spring is connected in fixed rotative engagement with a length-adjustable lever guided in a control cam of the tracker. A coupling rod configured for translatory movement engages with the length-adjustable lever for rotating a hinged lever associated with the liftgate or door. An adjusting device is connected with the bearing-torsion bar spring in fixed rotative engagement and can be variably locked relative to the support bracket. A method for producing such apparatus is also disclosed.