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Priority to NL6512089ApriorityCriticalpatent/NL6512089A/xx
Publication of NL6512089ApublicationCriticalpatent/NL6512089A/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
F16J3/00—Diaphragms; Bellows; Bellows pistons
F16J3/04—Bellows
F16J3/041—Non-metallic bellows
A—HUMAN NECESSITIES
A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
A61B5/00—Measuring for diagnostic purposes; Identification of persons
A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
A61B5/091—Measuring volume of inspired or expired gases, e.g. to determine lung capacity
A61B5/093—Measuring volume of inspired or expired gases, e.g. to determine lung capacity the gases being exhaled into, or inhaled from, an expansible chamber, e.g. bellows or expansible bag
