Patent · US Active

Multi-stage gearbox

US8398522B2 · kind B2 · utility

140Cited by

15References

14Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Gert Bauknecht · Friedrichshafen, DE
Gerhard Gumpoltsberger · Friedrichshafen, DE
Peter Ziemer · Tettnang, DE
Mark Mohr · Tettnang, DE

Key dates

Filing date	Feb 4, 2009
Grant date	Mar 19, 2013
Priority date	—
Expiry date	Dec 2, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2200/2064
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A multi-stage transmission comprising planetary gearsets (P1, P2, P3, P4), shafts, and shift elements. Gearsets (P1, P2) form a front -mounted gear gearset and gearsets (P3, P4) form a main gearset. The carriers of gearsets (P1, P2) are coupled via shaft (4) which couples a main gearset element. The ring gear of gearset (P1) couples the sun gear of gearset (P2) via shaft (8) that couples drive shaft (1) via clutch (18). The sun gear of gearset (P1) couples housing (G) by shaft (3) via brake (03), and shaft (1) via clutch (13). The ring gear of gearset (P2) couples housing (G) by shaft (5) via brake (05). Shaft (7) couples main gearset element, and, via brake (07), housing (G). Shaft (6) couples another main gearset element and, via clutch (16), shaft (1). The output shaft couples a further main gearset element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.