US4941618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nebulizer employing a fine mesh screen
Assignee: LEEMAN LABS Inc
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Filing: 1986-07-07
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Granted: 1990-07-17
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Expires: 2006-07-07
Abstract
Abstract A nebulizer for producing a quantity of fine liquid droplets consisting of a screen over which the liquid to be nebulized is flowed and a nozzle for directing a stream of gas at the screen. The force of the gas against the screen creates the droplets by shearing the liquid from the spaces in the mesh. A second screen in front of the first may be used to increase the uniformity of the output.
Inventors
- 👤 Karl J. Hildebrand
- 👤 John Urh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:02
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/04; B05B7/0416
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
99 words
A nebulizer for producing a quantity of fine liquid droplets from a liquid comprising in combination: a. a nozzle for producing and directing a stream of gas; b. a fine mesh screen positioned to receive said stream of gas, said screen of substantially greater area than that of the cross-section of said stream and the width of the mesh of said screen substantially smaller than the diameter of said stream; and c. means for flowing said liquid over said screen whereby said droplets are created by the shearing action of said stream impinging on said screen and said liquid.
Claim 2
Dependent Claim
99 words
A nebulizer for producing a quantity of fine liquid droplets from a liquid comprising in combination: a. a nozzle for producing and directing a stream of gas; b. a fine mesh screen positioned to receive said stream of gas, said screen of substantially greater area than that of the cross-section of said stream and the width of the mesh of said screen substantially smaller than the diameter of said stream; and c. means for flowing said liquid over said screen whereby said droplets are created by the shearing action of said stream impinging on said screen and said liquid.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1 further including a second screen disposed forward of said first screen.
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) | 1993-07-16 | 1994-01-15 | 1994-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-16 | 1998-01-15 | 1998-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-16 | 2002-01-15 | 2002-07-17 | $7700.00 | Window Closed / Lapsed |