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:
Feb. 01, 2011
Filed:
Dec. 28, 2007
Jin Soo Lee, Suwon, KR;
Jin Soo Lee, Suwon, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
Eight forward speeds and one reverse speed of an automatic transmission are achieved by: controlling a first clutch by a first pressure control valve controlled a first proportional control solenoid valve and a first pressure switching valve; controlling a second clutch by a second pressure control valve controlled by a second proportional control solenoid valve and a second pressure switching valve; controlling a third clutch by a third pressure control valve controlled by a third proportional control solenoid valve and a third pressure switching valve; controlling a first brake by first and second switching valves and a fourth pressure control valve controlled by a fourth proportional control solenoid valve and a fourth pressure switching valve; and controlling a second brake by a fifth pressure control valve controlled by a fifth proportional control solenoid valve and a fifth pressure switching valve.