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. 30, 2004
Filed:
Aug. 13, 2003
Sverker Alfredsson, Vastra Frolunda, SE;
Volvo Lastvagnar AB, Göteborg, SE;
Abstract
Method and arrangement for providing a synchronization device that is provided in a range gear assembly within planetary gearing in a vehicle. During synchronization and gear changing, at least one spring suspension element ( ) transmits bearing force from the clutch sleeve to the synchronization ring by means of cooperation with first recesses ( ) in the clutch sleeve ( ). The clutch sleeve, clutch rings, synchronization ring and spring suspension elements are provided on one side of the ring gear ( ). The synchronization ring ( ) is constructed together with an additional mirror-inverted synchronization ring in order to form a double synchronization ring ( ). The clutch sleeve ( ), during its axial movement for engagement of gear, separates the friction surfaces ( ) in the synchronization device to the gear, which becomes disengaged by means of the fact that at least one second recess ( ) is provided on the double synchronization ring ( ) and that a spring suspension element ( ) cooperates with the second recess ( ) as well.