Patent · US Active

Multi-speed transmission

US8777797B2 · kind B2 · utility

81Cited by

11References

22Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Edward W. Mellet · Rochester Hills, US
Andrew W. Phillips · Saline, US
James M. Hart · Belleville, US

Key dates

Filing date	Jan 25, 2013
Grant date	Jul 15, 2014
Priority date	—
Expiry date	Jan 25, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2200/2046
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A transmission is provided having an input member, an output member, at least four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include three clutches and three brakes actuatable in combinations of three to establish each of ten forward gear ratios and one reverse gear ratio.

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