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Publication of FR1559764ApublicationCriticalpatent/FR1559764A/fr
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16J—PISTONS; CYLINDERS; SEALINGS
F16J13/00—Covers or similar closure members for pressure vessels in general
F16J13/02—Detachable closure members; Means for tightening closures
E—FIXED CONSTRUCTIONS
E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
E05F15/00—Power-operated mechanisms for wings
E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
E05F15/57—Power-operated mechanisms for wings using fluid-pressure actuators for vertically-sliding wings