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E Dervaux SA Ets
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E Dervaux SA Ets
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Publication of FR832476ApublicationCriticalpatent/FR832476A/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
F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
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Engineering & Computer Science
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General Engineering & Computer Science
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FR832476D1937-05-101937-05-10
Manufacturing process of hollow valves
ExpiredFR832476A
(en)