Hybrid metal-composite valve lifter guide

Details Hybrid metal-composite valve lifter guide Hybrid metal-composite valve lifter guide

2005-12-27

2005-12-27

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090480, C123S090150

Reexamination Certificate

active

06978752

ABSTRACT:
A hybrid valve lifter guide formed of metal and nonmetallic material for maintaining the angular position of a reciprocable valve lifter having a circumferential surface with at least one alignment flat. The guide includes a metal guide body having a longitudinal guide wall with at least one guide opening through the wall. The guide opening is adapted to receive a valve lifter. A nonmetallic insert is retained by the body adjacent the guide opening to engage at least one alignment flat of the valve lifter received in the guide opening to substantially maintain the angular position of the valve lifter and dampen angular oscillation of the lifter during engine operation.

REFERENCES:
patent: 5088455 (1992-02-01), Moretz
patent: 5676098 (1997-10-01), Cecur
patent: 6513471 (2003-02-01), Hicks

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