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:
Mar. 25, 2014
Filed:
Feb. 01, 2011
Peter Solfrank, Frensdorf, DE;
Michael Bogner, Eckental, DE;
Peter Solfrank, Frensdorf, DE;
Michael Bogner, Eckental, DE;
Schaeffler Technologies GmbH & Co. KG, Herzogenaurach, DE;
Abstract
A mass balancing device for balancing free inertial forces and/or free moments of inertia of a reciprocating internal combustion engine (). The mass balancing device includes two balancer shafts () rotating at the same rotational speed in opposite directions of rotation, and a transmission () arranged between the crankshaft () of the internal combustion engine and the balancer shafts. The transmission drives the balancer shafts at a transmission ratio of crankshaft rotational speed to the balancer shaft rotational speed that is non-uniform over the crankshaft angle such that the angular speed of the balancer shafts is at the maximum at the piston dead centers. The mass balancing device is intended to be configured for an internal combustion engine of multi-cylinder design and the mean value of the transmission ratio is intended to be 1:2.