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:
Jan. 24, 2012
Filed:
Nov. 25, 2008
Michael Schober, St. Valentin, AT;
Andreas Hoelzl, Wieselburg, AT;
Roland Marzy, Steyr, AT;
MAGNA Powertrain AG & Co KG, Lannach, AU;
Abstract
The present invention relates to a balance shaft unit for mass balancing for an internal combustion engine of a motor vehicle including at least one balance shaft having at least one balance weight and a housing part in which the balance shaft is journaled. A first gear is associated with the balance shaft and meshes with a second gear. An introduction passage is formed in the housing part through which, starting from an assembly opening, at least one of the two gears can be introduced into the interior of the housing part, with the introduction passage extending perpendicular to the longitudinal axis of the balance shaft. The first gear and the second gear are arranged sequentially with respect to the direction of extent of the introduction passage. The housing part surrounds the periphery of the assembly opening in one piece, with the length of the assembly opening at the outer side of the housing part in a normal plane to the longitudinal axis of the balance shaft being smaller than the sum of the diameters of the two gears. A particularly high stability is hereby reached.