Patent · US Active

Planetary transmission

US7967713B2 · kind B2 · utility

9Cited by

5References

9Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Josef Haupt · Tettnang, DE
Paul Granderath · Bühlertal, DE
Hagen Dopfert · Gettorf, DE
Christian Ruhl · Friedrichshafen, DE

Key dates

Filing date	Mar 30, 2009
Grant date	Jun 28, 2011
Priority date	—
Expiry date	Nov 18, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19991
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A planetary gear set lubricating unit which supplies oil from inside a component adjacent the planetary gear set, via a radial bore and an oil catcher, axially through a bore of a planetary gear bolt to planetary gear bearings. The oil catcher forms a ring-shaped chamber, which can be filled with lubricant, and is arranged beside the planetary carrier approximately over the reference diameter of the planetary bolt. The oil catcher has outlet pipes extending axially to direct oil in the chamber. The oil catcher has ovular radial protrusions arranged such that a maximum radial dimension is close to the bolts and a minimum radial dimension is arranged between adjacent planetary bolts. The radially inner edge of the axial bore of the planetary bolts is radially located between the minimum and maximum dimensions of the protrusions. The chamber is delimited by a cover plate and a gasket.

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