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
F16J15/00—Sealings
F16J15/16—Sealings between relatively-moving surfaces
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
Dispositif d'etanchement d'un arbre rotatif, ensemble a arbre rotatif equipe de ce dispositif et turbocompresseur dont le rotor est muni dudit dispositif
Chapelet de ressorts helicoidaux loges respectivement dans des poches individuelles de retenue et suspension pour matelas de literie comprenant une pluralite de tels chapelets.