Patent · US Active

Multi step transmission

US8241170B2 · kind B2 · utility

87Cited by

17References

7Claims

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	Aug 14, 2012
Priority date	—
Expiry date	Oct 10, 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 shaft (4) which couples housing (G) via brake (04), the carrier of gearset (P1) couples shaft (3) which couples housing (G) via brake (03), the drive shaft via clutch (13), and shaft (5) via clutch (35). Shaft (5) couples the ring gear of gearset (P2) and the sun gear of gearset (P4). Shaft (1) couples the sun gear of gearset (P2) and operatively couples the carrier of gearset (P3). Shaft (6) couples the ring gear and carrier of gearsets (P1, P2) respectively, and operatively couples the sun gear of gearset (P3). The ring gear of gearset (P4) couples housing (G) and output shaft (2) couples the ring gear of gearset (P3), and detachably couples, via clutch (28), shaft (8) which couples the carrier of gearset (P4).

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