Leakdown plunger

Details Leakdown plunger Leakdown plunger

2006-03-21

2006-03-21

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090480, C123S090450

Reexamination Certificate

active

07013857

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 and is provided with a second annular plunger surface, the outer plunger surface includes a cylindrical plunger surface and cooperates with a lash adjuster body to define a cavity between the lash adjuster body and the outer plunger surface, and the inner plunger surface includes a first inner cylindrical plunger surface and a second inner cylindrical plunger surface.

REFERENCES:
patent: 3291107 (1966-12-01), Cornell
patent: 6871622 (2005-03-01), Mandal et al.

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