Simon G. Kaar,Jeffrey A. Karg,Timothy Norman Johnson,Robert Charles Uschold
申请号：
US14876190
公开号：
US10434269B2
申请日:
2015.10.06
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A dose counter for counting doses of medicament dispensed by or remaining in a metered-dose inhaler. The dose counter includes a rotatably mounted first gear wheel having ratchet teeth and a display coupled to the first gear wheel, the display having a visible array of dose counting indicia indexable in response to rotary motion of the first gear wheel. The dose counter further includes an actuator mechanism having a first ratchet drive pawl for engaging the ratchet teeth of the first gear wheel in response to the dispensation of a medicament dose, and a second ratchet drive pawl for engaging the ratchet teeth of a gear wheel coupled to the display. In use, a first ratchet tooth of the first gear wheel is rotatably driven by the first pawl and then a second ratchet tooth of the gear wheel coupled to the display is rotatably driven by the second pawl.
