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. 23, 1999

Filed:

Dec. 29, 1997
Applicant:
Inventor:

Jongsool Park, Kyunggi-do, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
475284 ; 475276 ; 475282 ; 475286 ;
Abstract

Disclosed is a powertrain used for a 5-speed automatic transmission. The powertrain includes a first compound planetary gearset and a second compound planetary gearset. The first compound planetary gearset comprises first and second simple planetary gearsets having first, second, third, and fourth operating elements, while the second compound planetary gearset comprises third and fourth simple planetary gearsets having fifth, sixth, seventh, and eighth operating elements. One of the fifth to eighth operating elements are fixedly connected to one of the first to fourth operating elements, one of the fifth to eighth operating elements are variably connected to two of the first to fourth operating elements, and one of the fifth to eighth operating elements operates as an output element. Clutches are disposed to variably connect the operating elements of the first and second compound planetary gearsets. A brake is interposed between at least one of the operating elements of the first and second compound planetary gearsets to a transmission housing.


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