Mechanical doses counter for a powder inhaler

A rotatably actuated counter (26) is disclosed. The counter includes a ratchet driven unit wheel (30) nested within a tens wheel (34). Each wheel has a radial face (84;60) displaying counting indicia (40;42). The tens wheel is transparent, allowing the indicia on the unit wheel to be viewed adjacent...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WELLS SIMON PAUL, BUTTERWORTH NOEL, YOUNG DUNCAN GRANT, MINSHULL STEPHEN JOHN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CALCULATING COMPUTING COUNTING COUNTING MECHANISMS COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE PHYSICS
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Beschreibung
Zusammenfassung:	A rotatably actuated counter (26) is disclosed. The counter includes a ratchet driven unit wheel (30) nested within a tens wheel (34). Each wheel has a radial face (84;60) displaying counting indicia (40;42). The tens wheel is transparent, allowing the indicia on the unit wheel to be viewed adjacent to the indicia on the tens wheel to provide a total count. A slave wheel (32) is positioned between the unit and tens wheels. A gear (70) on one face (72) of the slave wheel engages gear teeth (62) on the tens wheel. A Geneva mechanism (74) on the other face (76) is engaged by a foot (80) on the unit wheel once per rotation. The wheels are rotatably mounted within housing (36) having a sidewall (58) with a window (38) through which the count indicia (15) may be viewed. The unit wheel rotates in ten increments and then rotates the tens wheel through one increment by engaging and rotating the slave wheel.