Patent · US Active

Hydrostatic-mechanical power split transmission

US8262525B2 · kind B2 · utility

2Cited by

35References

10Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Jurgen Legner · Friedrichshafen, DE
Roland Fischer · Trostberg, DE
Michael Siber · Nusplingen, DE

Key dates

Filing date	Aug 15, 2008
Grant date	Sep 11, 2012
Priority date	—
Expiry date	May 12, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2200/2023
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydrostatic-mechanical power split transmission with at least two continuous operating ranges for use in agricultural and construction machines. The transmission has a summation planetary gear and a clutch for forward drive (7) and a clutch for reverse drive (6) that are arranged upstream of the summation gear. The transmission has a first sun gear (13) and a second sun gear (14) and a ring gear such that the ring gear (15) can be connected to an output drive shaft (22), via a clutch for the first driving range (23), and the second sun gear (14) can be connected to the output drive gear (22), via a clutch for the second operating range (27).

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