US3949939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metered spray device
Assignee: GlaxoSmithKline LLC
•
Filing: 1975-03-26
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Granted: 1976-04-13
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Expires: 1995-03-26
Abstract
Abstract A metered spray device has a container with an open top. A barrel is sealed in the top of the container and extends into the container. An elongated piston is slidably mounted in the barrel. The piston has a central opening running the full length of the piston for the passage of fluid. A check valve in the lower end of the barrel blocks the flow of fluid from the barrel into the container. A nozzle for engagement with a nostril is connected to the upper end of the piston. A spring biased check valve in the upper end of the piston blocks the flow of fluid downwardly into the piston.
Inventors
- 👤 Frank E. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:27
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/34; B05B1/3405; A; A61; A61M; A61M11/00; B05B11/00; B05B11/01; B05B11/10; B05B11/1001; B05B11/0005; B05B11/0062
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
A metered spray device comprising: a container having an open top, a barrel sealed in the top of the container and extending into the container, an elongated piston slidably mounted in the barrel with its lower end engaging the inner wall of the barrel, said piston having a passage running the full length of the piston, spring means exterior of the piston to bias the piston towards its retracted position, a check valve in the lower end of the barrel to block the flow of fluid from the barrel into the container, a discharge nozzle connected to the upper end of the piston, and a disc check valve in the upper end of the piston and a spring biasing the disc check valve downwardly to a closed position to block the flow of fluid downwardly in the passage of the piston.
Claim 2
Dependent Claim
141 words
A metered spray device comprising: a container having an open top, a barrel sealed in the top of the container and extending into the container, an elongated piston slidably mounted in the barrel with its lower end engaging the inner wall of the barrel, said piston having a passage running the full length of the piston, spring means exterior of the piston to bias the piston towards its retracted position, a check valve in the lower end of the barrel to block the flow of fluid from the barrel into the container, a discharge nozzle connected to the upper end of the piston, and a disc check valve in the upper end of the piston and a spring biasing the disc check valve downwardly to a closed position to block the flow of fluid downwardly in the passage of the piston.
Claim 3
Dependent Claim
14 words
The device of claim 1 in which the spring means is within the barrel.
Claim 4
Dependent Claim
17 words
The device of claim 1 having venting means connecting the interior of the container to the atmosphere.
Claim 5
Dependent Claim
82 words
The device of claim 1 in which the barrel is sealed in the top of the container by a closure member having a top, a depending wall, bosses depending from the top to engage the container and space it away from the closure member, a bead on the inside of the wall to engage the container, said bead having a cut out portion to permit air to pass the bead and flow between the closure member and the container into the container.
Claim 6
Dependent Claim
10 words
The device of claim 1 having a removable nozzle cap.
Claim 7
Dependent Claim
19 words
The device of claim 1 having means providing a helical passage in the nozzle to form a swirling spray.
Claim 8
Dependent Claim
28 words
The device of claim 2 having a flange on the piston above the barrel and above the container for moving the piston towards the bottom of the barrel.
Claim 9
Dependent Claim
21 words
The device of claim 6 comprising a threaded member secured by a pressed fit in the bore of a holding member.
References Cited (Backward Citations)
US2892576A
Cited
US3341082A
Cited
US3680790A
Cited
US3756474A
Cited
US3797748A
Cited
US3799448A
Cited
US3818908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |