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. 16, 1999

Filed:

Dec. 29, 1997
Applicant:
Inventor:

Jongsool Park, Kyunggi-do, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
475275 ;
Abstract

A powertrain which is used for a four-speed automatic transmission. The powertrain includes a first planetary gear unit and a second planetary gear unit. The first planetary gear unit is a first simple planetary gearset having first, second and third operating elements. The second planetary gear unit is a compound planetary gear unit including second and third simple planetary gearsets having fourth, fifth, sixth and seventh operating elements. The fourth operating element is fixedly connected to the first operating element, and the fifth operating element is variably connected to either the second operating element or the third operating element. Clutches are disposed between the fifth operating element and the second and third operating elements. Brake is interposed between at least one of the operating elements of the first and second planetary gear units to a transmission housing.


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