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:
Dec. 02, 2014

Filed:

Dec. 27, 2012
Applicants:

Hyundai Motor Company, Seoul, KR;

Kia Motors Corporation, Seoul, KR;

Inventors:

Hyunjun Son, Hwaseong-si, KR;

Joo Hang Lee, Yongin-si, KR;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 45/02 (2006.01); F16H 61/14 (2006.01);
U.S. Cl.
CPC ...
F16H 45/02 (2013.01); F16H 61/143 (2013.01);
Abstract

A hydraulic control apparatus may be provided with a lock-up clutch operated or not by hydraulic pressure difference between an engagement-side oil chamber and a disengagement-side oil chamber and may include a first hydraulic line supplying hydraulic pressure to the disengagement-side oil chamber or exhausting the hydraulic pressure from the disengagement-side oil chamber, a second hydraulic line supplying hydraulic pressure to the engagement-side oil chamber or exhausting the hydraulic pressure from the engagement-side oil chamber, and a third hydraulic line connected to a slip switch valve, and selectively exhausting through the slip switch valve the hydraulic pressure supplied to the engagement-side oil chamber.


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