Traveling vehicle
US-2024208322-A1 · Jun 27, 2024 · US
Multi-speed transmission with integrated electric motor
US8944949B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8944949-B2 |
| Application number | US-201113312471-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 6, 2011 |
| Priority date | Feb 17, 2011 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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An automatic transmission includes an input shaft or member, an output shaft or member and three simple and one compound planetary gear assemblies each including a sun gear, a planet gear carrier with a plurality of planet gears and a ring gear. The input shaft or member is coupled to the sun gear of the second planetary gear assembly and the output shaft is coupled to the planet gear carrier of the fourth planetary gear assembly. An electric motor is coupled to and drives the sun gear of the fourth planetary gear assembly. The transmission also includes six torque transmitting devices: four friction brakes and two friction clutches.
First claim
Opening claim text (preview).
What is claimed is: 1. A multiple speed automatic transmission comprising, in combination, a first, a second, a third and a fourth planetary gear assembly, each of said planetary gear assemblies having three components, an input member connected to a first component of said second planetary gear assembly, an output member connected to a first component of said fourth planetary gear assembly, a first component of said first planetary gear assembly coupled to a second componen…
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Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
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Frequently asked questions
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- What does patent US8944949B2 cover?
- An automatic transmission includes an input shaft or member, an output shaft or member and three simple and one compound planetary gear assemblies each including a sun gear, a planet gear carrier with a plurality of planet gears and a ring gear. The input shaft or member is coupled to the sun gear of the second planetary gear assembly and the output shaft is coupled to the planet gear carrier o…
- Who is the assignee on this patent?
- Mellet Edward W, Hart James M, Borgerson James B, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B60K6/365. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).