4. Valves and valve actuation
  5. Biased valve
  6. Springs and spring retainers

Daniel H. Pierce

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Bi-plastic self-locking valve spring retainer

Internal-combustion engines – Poppet valve operating mechanism – Spring
Patent

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Poppet valve spring retainer

Internal-combustion engines – Poppet valve operating mechanism – Spring
Patent

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Self-locking valve spring retainer

Metal working – Means to assemble or disassemble – Valve applying or removing
Patent

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Self-locking valve spring retainer

Valves and valve actuation – Biased valve – Springs and spring retainers
Patent

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Valve spring retainer with skirt

Internal-combustion engines – Poppet valve operating mechanism – Spring
Reexamination Certificate

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Profile ID: LFUS-PAI-P-974729

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