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.
Patent No.:
Date of Patent:
Jul. 09, 2019
Filed:
Dec. 11, 2017
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Seong Wook Hwang, Gunpo-si, KR;
Hyun Sik Kwon, Seoul, KR;
Ki Tae Kim, Incheon, KR;
Won Min Cho, Hwaseong-si, KR;
Jae Chang Kook, Hwaseong-si, KR;
Seong Wook Ji, Hwaseong-si, KR;
HYUNDAI MOTOR COMPANY, Seoul, KR;
KIA Motors Corporation, Seoul, KR;
Abstract
Disclosed is a vehicle transmission with multiple gear stages, the transmission being capable of improving fuel economy and the performance of a vehicle. The vehicle transmission includes four planetary gear sets and six friction members. A shifting operation is performed such that rotary elements of the planetary gear sets are selectively connected and disconnected by the friction members so that the speed and direction of rotation of each gear are changed. Through this shifting operation, a vehicle can drive with one of ten or more forward speed gear ratios and one or more reverse speed gear ratios.