Multistep transmission of a layshaft type

Details Multistep transmission of a layshaft type Multistep transmission of a layshaft type

2007-09-11

2007-09-11

Le, David D. (Department: 3681)

Machine element or mechanism

Gearing

Interchangeably locked

C074S325000, C074S329000, C074S340000, C384S461000

Reexamination Certificate

active

11208502

ABSTRACT:
A multi-speed transmission of countershaft design having a main countershaft and a hollow countershaft arranged concentrically and having likewise two load-shift elements. A first half of the shift elements is connected with a drive unit and a second half of the shift elements is connected to a gearbox input shaft. The gearbox input shafts and countershafts are mounted in a housing and connected to gear wheels, which intermesh in pairs as gear wheel pairs and can be connected or disconnected in order to reduce the overall gear ratio in the power flow. The main countershaft is mounted directly on the housing in the area of its first end and in the hollow countershaft in the area of its second end. The hollow countershaft is mounted in the housing in the area of its end that faces toward the end of the main countershaft that is mounted in the hollow countershaft.

REFERENCES:
patent: 4738149 (1988-04-01), Janiszewski
patent: 5390558 (1995-02-01), Weinberg
patent: 6050152 (2000-04-01), Alfredsson
patent: 6595077 (2003-07-01), Geiberger et al.
patent: 7044013 (2006-05-01), Ahrens
patent: 43 30 170 (1995-03-01), None

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