Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2011-08-23
2011-08-23
Eshete, Zelalem (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090150, C123S090310
Reexamination Certificate
active
08001938
ABSTRACT:
After having determined a phase angle, the phase angle is maintained as the determined one without consuming electric power.An intermediate member14is movably disposed on the outer periphery of an inner cylinder part12that is relatively rotatably disposed with respect to an outer cylinder part10to which a driving force of a crankshaft is transmitted and that is connected to a camshaft. In a process in which the intermediate member14moves in the axial direction when a solenoid74or a solenoid76is energized, balls46and48move in mutually opposite directions in response to a displacement in the axial direction caused by the movement of the intermediate member14, and the phase between the outer cylinder part10and the camshaft2is variably adjusted. After the intermediate member14is set at an advance position or a retard position when the solenoids74and76are deenergized, the balls46and48stop moving for the input of torque from the outer cylinder part10or from the camshaft2, and a self-locking state is reached.
REFERENCES:
patent: 4862843 (1989-09-01), Kawamoto et al.
patent: 2005/0045127 (2005-03-01), Aino et al.
patent: 1-134012 (1989-05-01), None
patent: 10-153104 (1998-06-01), None
patent: 2003-239708 (2003-08-01), None
International Search Report for PCT/JP2006/319489 mailed Dec. 19, 2006.
Aino Hiroshi
Kameda Michihiro
Cole Thomas W.
Eshete Zelalem
Nittan Valve Co., Ltd.
Roberts Mlotkowski Safran & Cole P.C.
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