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Priority to ES1985291862UpriorityCriticalpatent/ES291862Y/en
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Publication of ES291862YpublicationCriticalpatent/ES291862Y/en
Maximum expiratory flow measuring device, essentially characterized by comprising a cylindrical body with one of its bases coupled to a tubular component forming radial entry holes and coupled to a nozzle intended to receive the flow of expiration, figuring inside the cylinder a fixed axial rod serving as a guide for the displacement of a discoidal component derived in a tubular appendix acting as a piston, requested with tendency to retraction by a nelicoidal spring disposed around the axial rod, the side wall of the cylinder having a longitudinal opening provided with an index displaceable by the thrust of the disc-piston in conjugation with a scale graduated in units of volume per unit of time located parallel to said opening, while the other base presents orifices for the outlet of the air. (Machine-translation by Google Translate, not legally binding)
ES1985291862U1985-12-311985-12-31
MAXIMUM EXPIRATORY FLOW METER DEVICE
ExpiredES291862Y
(en)
Discharge head for applying cement to electric lamp bases - includes reservoir containing spring biased axially moving shaft to dispense measured quantity of cement