4. Internal-combustion engines
  5. Poppet valve operating mechanism
  6. With means for varying timing

Derek Frost

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Cam drive mechanism

Internal-combustion engines – Poppet valve operating mechanism – Camshaft drive means
Patent

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Desmodromic valve system

Internal-combustion engines – Poppet valve operating mechanism – Valve driven closed
Patent

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Dual tract induction

Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent

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Variable lift valves

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent

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Variable valve timing

Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Patent

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Profile ID: LFUS-PAI-P-252006

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