Valve actuator for actuating a gas exchange valve of an...

Details Valve actuator for actuating a gas exchange valve of an... Valve actuator for actuating a gas exchange valve of an...

2008-04-22

2008-04-22

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090520, C123S090240, C123S090120, C123S188300, C074S57900F

Reexamination Certificate

active

10535132

ABSTRACT:
A valve actuator for operating a gas exchange valve of an internal combustion engine has a sleeve-shaped positioning piston which is connected to a valve stem, has at least two shell-shaped wedge pieces enclosing a stem end of the valve stem, whose radially outer peripheral surfaces have a conical segment which tapers off with increasing distance from the gas exchange valve and which is at least partially surrounded by a conical clamping sleeve having a mating conical inner surface and is connected to the positioning piston. The wedge pieces are axially form-fittingly and rotatably connected to a threaded bolt. A threaded segment is provided on the threaded bolt via which the wedge pieces and the conical clamping sleeve are axially attachable to one another.

REFERENCES:
patent: 5213072 (1993-05-01), Dohring
patent: 5485815 (1996-01-01), Shida
patent: 6729287 (2004-05-01), Hammer et al.
patent: 6871619 (2005-03-01), Hammer et al.
patent: 101 16 218 (2002-10-01), None
patent: 102 28 702 (2003-04-01), None
patent: 0 391 507 (1990-10-01), None
patent: 0 949 030 (1999-10-01), None
patent: 1 489 160 (1967-07-01), None

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