Internal-combustion engines – Poppet valve operating mechanism – Rocker
Reexamination Certificate
2007-11-13
2007-11-13
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Rocker
C123S090160, C123S090440, C074S569000
Reexamination Certificate
active
11361273
ABSTRACT:
The present invention relates to a leakdown plunger, comprising a first plunger opening, a second plunger opening, and an outer plunger surface that is provided with an axis and encloses an inner plunger surface, the first plunger opening is provided with a first annular plunger surface shaped to accommodate a valve insert, the second plunger opening is configured to cooperate with a socket body, the outer plunger surface includes a cylindrical plunger surface and cooperates with an engine workpiece, and the inner plunger surface includes an inner cylindrical plunger surface.
REFERENCES:
patent: 7025025 (2006-04-01), Mandal et al.
patent: 7069891 (2006-07-01), Mandal et al.
Mandal Dhruva
Williams Carroll D.
Alden Dana Andrew
Chang Ching
MacLean-Fogg Company
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