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:
Oct. 09, 1990
Filed:
Mar. 27, 1989
Hermann Langeneckert, Appenweier, DE;
Luk Lamellen und Kupplungsbau GmbH, Buhl, DE;
Abstract
Vibration damping apparatus for use in the power train between the engine and the variable-speed transmission of a motor vehicle has a first flywheel connectable to the engine, a second flywheel connectable to the input shaft of the transmission by a friction clutch, one or more dampers between the flywheels, and an axial plug-in coupling between the parts which are carried by the first flywheel and the parts which are carried by the second flywheel. The coupling has radially extending first profiles which are carried by the first flywheel and radially extending second profiles which are carried by the second flywheel and mate with the first profiles to transmit torque when the engine is running. In order to reduce rattling or other types of noise when the engine is idling while the clutch is engaged and the transmission is not shifted into a forward or reverse gear, the first and second profiles are braced against other by coil springs or by other types of resilient bracing members in a direction in which the first profiles transmit torque to the second profiles when the engine drives the first flywheel and the first flywheel rotates the second flywheel by way of one or more dampers.