Fluid-pressure and analogous brake systems – Multiple systems – Fluid pressure and electric
Reexamination Certificate
2008-11-25
2009-10-20
Schwartz, Christopher P (Department: 3657)
Fluid-pressure and analogous brake systems
Multiple systems
Fluid pressure and electric
C192S219400, C192S220300
Reexamination Certificate
active
07604302
ABSTRACT:
The parking brake system that restricts or releases a parking gear by using an operational force by hydraulic pressure that is generated or removed according to whether the engine works and an operational force by an electromagnetic force, includes a position valve that outputs operational pressure supplied from a hydraulic pressure supplier, to a pressure control valve corresponding to a shift range including a parking range, a parking releasing valve that outputs operational pressure supplied from position valve at the other shift ranges than a parking range, a main actuator that releases a parking gear when an operational force is transmitted from parking releasing valve and restricts the parking gear when the operational force is removed, and/or a sub-actuator that releases the parking gear by providing an operational force to main actuator only when an engine works.
REFERENCES:
patent: 5310251 (1994-05-01), Towers et al.
patent: 5630489 (1997-05-01), Bebernes
patent: 5722517 (1998-03-01), Sayama
patent: 5827149 (1998-10-01), Sponable
patent: 6311808 (2001-11-01), Halasy-Wimmer et al.
patent: 6450587 (2002-09-01), MacGregor et al.
patent: 6802571 (2004-10-01), Ishimaru et al.
patent: 2007-002955 (2007-01-01), None
patent: 10-2004-0054029 (2004-06-01), None
patent: 10-2006-0054229 (2006-05-01), None
Kim Hongseop
Kim Wooyeol
Lee Jin-hee
Lee Joohang
Hyundai Motor Company
Kia Motors Corporation
Morgan & Lewis & Bockius, LLP
Schwartz Christopher P
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