Internal-combustion engines – Poppet valve operating mechanism – Tappet
Reexamination Certificate
2011-03-08
2011-03-08
Eshete, Zelalem (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Tappet
C123S090520, C123S090480
Reexamination Certificate
active
07900592
ABSTRACT:
A switchable component for a valve train of an mternal combustion engine, comprising a housing, a coupling means, an inner element being biased by at least one lost motion spring, a stop means, and an anti-rotation device configured as a thin-walled ring comprising a slit, a rectangular extension projects inwards from a central position from the inner peripheral surface of the ring which extends parallel to a transversal plane of the component on an outer peripheral surface of the housing, the housing comprises an aperture that is complementary in shape to the extension of the ring and said extension extends through said aperture, a counter surface for the extension extends in the form of a longitudinal flattened portion or a longitudinal groove in the outer peripheral surface of the inner element, and the extension extends with a complementary inner surface directly on or into said counter surface.
REFERENCES:
patent: 4089234 (1978-05-01), Henson et al.
patent: 5263386 (1993-11-01), Campbell et al.
patent: 5307769 (1994-05-01), Meagher et al.
patent: 2003/0051689 (2003-03-01), Schnell
patent: 101 19 366 (2002-10-01), None
patent: 10 2006 007 489 (2006-09-01), None
Eshete Zelalem
Lucas & Mercanti LLP
Schaeffler KG
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