US3789843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breath-actuated aerosol dispenser
Assignee: Fisons Corp
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Filing: 1972-02-23
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Granted: 1974-02-05
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Expires: 1992-02-23
Abstract
Abstract An inhalation device for use with an aerosol container capable of discharging a metered amount of an aerosol formulation on depression of its valve nozzle comprising, a chamber, a mouthpiece communicating with the chamber, a mechanism for causing actuation of the valve including a movable wall, a linking lever, an actuating lever, a spring biasing the actuating lever, and a latch mechanism such that the movable wall member disposed between an air admission port into said chamber and said mouthpiece moves away from said port under influence of air flow through said port to release the latch mechanism when suction is applied to said mouthpiece and therefore causing the actuating lever to actuate the valve.
Inventors
- 👤 J Armstrong
- 👤 G Lyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:13
CPC Classifications
A; A61; A61M; A61M15/00; A61M15/0091; A61M15/009
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
An inhalation deVice for use with an aerosol container capable of discharging a metered amount of an aerosol formulation on depression of its valve nozzle, said device comprising a chamber, a mouthpiece communicating with said chamber, spring means for causing actuation of said valve, latch means for maintaining the device in a cocked position ready for discharge, and triggering means responsive to suction applied to said mouthpiece, said triggering means including a movable wall member pivotally mounted internally of said chamber between an airadmission port means into said chamber and said mouthpiece, said movable wall member adapted to move away from said port means under the influence of ambient air pressure applied to one side of said wall through said port means when suction is applied to said chamber through said mouthpiece and by so moving to release said latch means, wherein said air-admission port means comprises an aperture in a wall of said chamber and said movable wall means includes a button means substantially filling said aperture when the device is in its cocked position.
Claim 2
Dependent Claim
176 words
An inhalation deVice for use with an aerosol container capable of discharging a metered amount of an aerosol formulation on depression of its valve nozzle, said device comprising a chamber, a mouthpiece communicating with said chamber, spring means for causing actuation of said valve, latch means for maintaining the device in a cocked position ready for discharge, and triggering means responsive to suction applied to said mouthpiece, said triggering means including a movable wall member pivotally mounted internally of said chamber between an airadmission port means into said chamber and said mouthpiece, said movable wall member adapted to move away from said port means under the influence of ambient air pressure applied to one side of said wall through said port means when suction is applied to said chamber through said mouthpiece and by so moving to release said latch means, wherein said air-admission port means comprises an aperture in a wall of said chamber and said movable wall means includes a button means substantially filling said aperture when the device is in its cocked position.
Claim 3
Dependent Claim
42 words
An inhalation device as claimed in claim 1 wherein the clearance between the sides of said movable wall portion and the walls of said chamber is substantially less when the device is in its cocked position than when in its discharge position.
Claim 4
Dependent Claim
28 words
An inhalation device as claimed in claim 1 wherein said spring means biases said movable wall member toward said port when the device is in its cocked position.
Claim 5
Dependent Claim
33 words
An inhalation device as claimed in claim 1 wherein separate biasing spring means are provided to bias said movable wall member toward said port means when the device is in its cocked position.
Claim 6
Dependent Claim
73 words
An inhalation device as claimed in claim 1 wherein said device includes a second chamber for receiving and retaining said aerosol container and said device is provided with a sliding cover for said second chamber, said cover including a wedge member movable relative thereto, said wedge member adapted to press against the end of said container to retain said container in a fixed position in said second chamber when said cover is closed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |