| 摘要 |
In the present invention, there is described a mechanical counter for a metering apparatus having two coaxially arranged housing portions (1, 2), which are rotated relative to each other when the metering apparatus is operated wherein the mechanical counter further comprises at least one rotary spindle (4) with a screw thread thereon, the axis of which extends substantially parallel to the axis of the metering apparatus and which is mounted in the vicinity of ends of the spindle (4) with respective rotary mountings (5, 6) on the first housing portion (1), further tooth arrangement disposed at the spindle(4) end being nearest to the housing second portion (2), a cursor movable along the spindle (4) by the screw thread when the spindle (4) rotates, and a scale (27) disposed adjacent to the cursor. At an edge of the second housing portion (2), there is at least one projection (19, 20) for engaging the tooth arrangement on the spindle (4) to rotate the spindle (4) wherein said cursor is adjustable. There is also described a metered dose inhaler being provided with the above-described mechanical counter. |
