Lobe-less cam for use in a springless poppet valve system

Details Lobe-less cam for use in a springless poppet valve system Lobe-less cam for use in a springless poppet valve system

2005-09-20

2005-09-20

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Valve driven closed

C123S090600, C123S090260, C123S090250, C123S090310, C123S090170

Reexamination Certificate

active

06945206

ABSTRACT:
A lobe-less cam for use in a springless poppet valve system is disclosed including a cam shaft having at least one surrounding region, at least one asymmetrical cam groove formed in the at least one surrounding region, and wherein the at least one asymmetrical cam groove has a lift portion and a descent portion.

REFERENCES:
patent: 1280912 (1918-10-01), Waterman
patent: 5058540 (1991-10-01), Matsumoto
patent: 6619250 (2003-09-01), Folino
patent: 6705262 (2004-03-01), Battlogg
patent: 6796277 (2004-09-01), Battlogg
patent: 2616510 (1988-12-01), None

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