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Publication of BE644135ApublicationCriticalpatent/BE644135A/xx
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
F16J13/12—Detachable closure members; Means for tightening closures attached by wedging action by means of screw-thread, interrupted screw-thread, bayonet closure, or the like