The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 05, 2019

Filed:

Nov. 30, 2017
Applicants:

Hyundai Motor Company, Seoul, KR;

Kia Motors Corporation, Seoul, KR;

Inventors:

Jong Soo Kim, Seoul, KR;

Dong Hwan Hwang, Seoul, KR;

Jong Sool Park, Hwaseong-si, KR;

Kyeong Hun Lee, Seoul, KR;

Jin Ho Kim, Suwon-si, KR;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 3/60 (2006.01); F16H 3/66 (2006.01);
U.S. Cl.
CPC ...
F16H 3/66 (2013.01); F16H 3/666 (2013.01); F16H 2200/0065 (2013.01); F16H 2200/2012 (2013.01); F16H 2200/2046 (2013.01);
Abstract

The present disclosure provides nine forward speeds and one reverse speed. They are achieved by a planetary gear train of an automatic transmission that includes a main shifting portion having three planetary gear sets arranged on an input shaft, an auxiliary shifting portion having one planetary gear set arranged on an output shaft, nine shafts respectively connected with corresponding rotational elements of the four planetary gear sets, and two transfer gears respectively forming external gear-engagement between the main and auxiliary shifting portions.


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