Patent · US Active

Multi-ratio transmission

US8444524B2 · kind B2 · utility

90Cited by

6References

6Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Gerhard Gumpoltsberger · Friedrichshafen, DE
Christian Sibla · Friedrichshafen, DE
Stefan Beck · Eriskirch, DE
Josef Haupt · Tettnang, DE
Gert Bauknecht · Friedrichshafen, DE
Peter Ziemer · Tettnang, DE

Key dates

Filing date	Aug 19, 2010
Grant date	May 21, 2013
Priority date	—
Expiry date	Aug 19, 2030

Classification

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

Abstract

A multi step transmission comprises planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The sun gear of gearset (P1) couples housing (G). The carrier of gearset (P1) couples shaft (3), which couples housing (G) via brake (03), drive shaft (01) via clutch (13), and shaft (5) via clutch (35). Shaft (5) operatively couples the sun gear of gearset (P3) and couples the ring gear of gearset (P2) and the sun gear of set (P4). Shaft (1) couples, via clutch (17), shaft (7), which couples the sun gear of gearset (P2), and operatively couples the carrier of gearset (P3). Shaft (6) couples the ring gear of gearset (P1) and the carrier of gearset (P2) The ring gear of gearset (P4) couples shaft (4), which couples housing (G) via brake (04), and output shaft (2) couples the ring gear of gearset (P3) and the carrier of set (P4).

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