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Individual
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Individual
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Publication of FR974055ApublicationCriticalpatent/FR974055A/en
F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant