Jeffrey A. Karg;Timothy Norman Johnson;Simon G. Kaar;Robert Charles Uschold
发明人:
Simon G. Kaar,Jeffrey A. Karg,Timothy Norman Johnson,Robert Charles Uschold
申请号：
US13387532
公开号：
US10105502B2
申请日:
2010.07.28
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A dose counter for counting does of medicament dispensed by or remaining in a metered-dose inhaler. The dose counter includes a rotatably mounted gear wheel having a circular arrangement of ratchet teeth defining a root circle and a display coupled to the gear wheel, the display having a visible array of dose counting indicia indexable in response to rotary motion of the gear wheel. The dose counter further includes an actuator mechanism having a driver for rotatably driving the gear wheel in response to the dispensation of a medicament dose, the driver being arranged to engage the ratchet teeth of the gear wheel. The actuator mechanism includes an actuator shaft mounted for linear movement in response to the dispensing of a dose of medicament. In use, the travel of the driver along the root circle of the gear wheel exceeds the corresponding linear movement of the actuator shaft.
