Patent · US Active

Multi-stage gearbox

US8210981B2 · kind B2 · utility

125Cited by

13References

16Claims

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	Jul 3, 2012
Priority date	—
Expiry date	Aug 10, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2200/2097
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A multi-stage transmission comprises planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The carriers of gearsets (P1, P2) couple via shaft (4) which couples the sun gear of gearset (P3). The ring gear of the gearset (P1) couples the sun gear of gearset (P2) via shaft (8), which 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). The sun gear of gearset (P4) couples housing (G). Shaft (6) couples shaft (1) via clutch (16) and carrier of gearset (P3). Shaft (9) couples shaft (4) via clutch (49) and the ring gear of gearset (P4). Output shaft (2) couples the ring gear and the carrier respectively of gearsets (P3, P4).

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