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Indicating device for aerosol container
| Details |
Inventors: Scarrott, Peter Mykola; Schmidt, James Nick; Grychowski, Jerry R.; Foley, Martin P.;
Assignee: Trudell Medical International (London, CA)
Primary Examiner: Lewis; Aaron J.
Assistant Examiner: Mitchell; Teena
Attorney, Agent or Firm: Brinks Hofer Gilson & Lione
An indicating device suitable for indicating the number of metered dosages that have been dispensed from or remain in a container including a base member adapted to be mounted to the container and a cap member moveably connected to the base member. The cap member is moveable relative to the base member along an axial path between a first position and a second position a predetermined number of axial movements. An indicator member is rotatably mounted to the cap member. A first lock member disposed on the base member, and a second lock member is disposed on one of the indicator member and the cap member. The first and second lock members are engaged after the predetermined number of axial movements of the cap member relative to the base member, wherein the first and second lock members maintain the cap member and the base member in one of the first position and the second position when engaged. In another aspect, a preferred embodiment of a method for indicating the number of metered dosages of medicaments dispensed from or remaining in a container is provided. |
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DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS Referring to the drawings, and in particular FIGS.
31 and 32, an aerosol dispenser is shown as including a housing 200, or actuator boot, and a container 12 disposed therein.
The housing has a longitudinally extending cavity 202 shaped to receive the container.
A top portion of the housing is generally open such that the container can be inserted in the housing through opening 204 and be installed therein with a bottom end 14 of the container protruding from the housing so as to be exposed to the user for actuation.
The terms "longitudinal" and "axial" as used herein are intended to indicate the direction of the reciprocal movement of the container relative to the housing, and of an indicating device cap member relative to a base member.
The terms "top," "bottom," "upwardly" and "downwardly" are intended to indicate directions when viewing the inhalation devices as shown in the Figures, but with the understanding that the container is inverted such that the top surface thereof is located adjacent the bottom of the housing and vice versa.
Moreover, it should be understood that a user can use the container and dispenser in any number of positions, including but not limited to the preferred upright position shown in FIGS.
31 and 32.
As shown in FIGS.
31 and 32, a cylindrical support block 212 having a well 214 is formed in a bottom portion 206 of the housing.
An orifice 210 penetrates the support block to communicate with a bottom portion of the well.
In one embodiment, a mouthpiece 208, intended for insertion into the mouth of a patient, forms an exhaust port 216 that communicates with the orifice and well.
The mouthpiece 208 extends laterally from the housing so as to facilitate insertion of the mouthpiece into the mouth of the patient.
The container 12 is cylindrical and has a hub 16 disposed on a top surface 17 thereof.
A valve stem 18 extends longitudinally from the hub.
The valve stem extends coaxially from the container and is biased outwardly therefrom by a spring (not shown) mounted within the valve stem of the container
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Communications 
