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. 20, 2009
Filed:
Nov. 11, 2002
Sverker Alfredsson, Gothenburg, SE;
Sverker Alfredsson, Gothenburg, SE;
Volvo Lastvagnar AB, Gothenburg, SE;
Abstract
Range gearbox for motor vehicles adapted to be connected to the output side of a basic gearbox and including planetary gear (), enclosed in a housing (), with a sun wheel () arranged on an input shaft () and engaged with planet wheels (). The ring gear () is selectively lockable in order to establish gearing between the input shaft and the output shaft. Interacting tooth faces of the planetary gear () are angled in such a manner in relation to the longitudinal axis of the input shaft () and the output shaft () so that an axial force arises on the ring gear () from gear speed changes during synchronizing, and this force, at least on shifting to the low range position, tends to move the ring gear in the same direction as an external shifting force.