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:
Aug. 01, 2000
Filed:
Jan. 22, 1999
Guenter Ruehle, Loechgau, DE;
Martin Seufert, Leonberg, DE;
Getrag Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie., Ludwigsburg, DE;
Abstract
A motor vehicle stepped transmission comprises a transmission input shaft ich is driven by an engine output shaft via a separating clutch. Further, it comprises a transmission output shaft arranged colinearly with the transmission input shaft. A countershaft is arranged parallel to the transmission output shaft. A plurality of gearwheel sets is provided for establishing forward and reverse gears within the transmission. A sub-plurality of the gearwheel sets each comprises a loose wheel. The loose wheels are rotatably arranged on a shaft and are adapted to be rigidly connected to the shaft by means of a gearshift clutch for shifting into one of a sub-plurality of the forward and reverse gears. Another of the gearwheel sets is associated to another of the forward and reverse gears and is adapted to be switched by means of a friction clutch. A toothed wheel within the other gearwheel set and associated to the other gear is arranged on an additional shaft extending parallel to the transmission output shaft. Means are provided for establishing a torque-transmitting connection from the engine output shaft to the other gearwheel set via the friction clutch. Thus, a gearshift jolt is reduced when shifting from one gear to another. The friction clutch is adapted to be closed when one of the gearshift clutches is activated.