Patent · US Active

Planetary gear for variable transmission

US8992361B2 · kind B2 · utility

5Cited by

8References

5Claims

0Family size

Assignee

AIRBUS HELICOPTERS DEUTSCHLAND GMBH · DE

Inventors

Andreas Doleschel · Großhelfendorf, DE
Martin Weidenthaler · Unterhaching, DE
Christian Wirth · Winterthur, CH
Franz Kurth · Nuremberg, DE
Bernd-Robert Hohn · Kösching, DE

Key dates

Filing date	Oct 10, 2012
Grant date	Mar 31, 2015
Priority date	—
Expiry date	Dec 14, 2032

Classification

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

Abstract

A planetary gear (1, 20, 30, 40) for variable transmission, particularly a planetary gear for variable transmission towards a tail rotor of a helicopter. At least one gear set (s1, s2, s3, s4) of a sun gear (w4, w6, 21) comprises a ring gear (w1, w7), planetary wheels (2, 22, 32) and a planet carrier (w2, w3, w8). At least one clutch (k, K1, K2) and at least one freewheel (Fl, FL1, FL2) are provided for at least two different speeds of the planet carrier (w2, w3, w8) as output.

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