Invention Grant
- Patent Title: Multi-speed planetary transmission
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Application No.: US15821013Application Date: 2017-11-22
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Publication No.: US10344833B2Publication Date: 2019-07-09
- Inventor: Mitchell Irving , Drew A. Crafton
- Applicant: Allison Transmission, Inc.
- Applicant Address: US IN Indianapolis
- Assignee: ALLISON TRANSMISSION, INC.
- Current Assignee: ALLISON TRANSMISSION, INC.
- Current Assignee Address: US IN Indianapolis
- Agency: Faegre Baker Daniels LLP
- Main IPC: F16H3/66
- IPC: F16H3/66

Abstract:
A multi-speed transmission including a plurality of planetary gearsets and a plurality of selective couplers to achieve at least nine forward speed ratios is disclosed. The plurality of planetary gearsets may include a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset. The plurality of selective couplers may include a number of clutches and a number of brakes. The multi-speed transmission may have four planetary gearsets and six selective couplers. The six selective couplers may include four clutches and two brakes.
Public/Granted literature
- US20180094707A1 MULTI-SPEED PLANETARY TRANSMISSION Public/Granted day:2018-04-05
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