US3709433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for generating mist
Assignee: Lubriquip Inc
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Filing: 1971-03-25
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Granted: 1973-01-09
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Expires: 1991-03-25
Abstract
Abstract A method of producing a fine mist or aerosol by means of a pressurized-gas operated mist generating head in which a foam or bubbles of liquid are supplied to the mist generating head. Apparatus for producing a mist or aerosol by means of said method.
Inventors
- 👤 R Obergefell
- 👤 E Kish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:19
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/30; F16N7/32; F16N7/34; B; B05; B05B; B05B12/00; B05B12/004; B05B12/006; B05B12/008; B05B7/00; B05B7/0012; B05B7/24; B05B7/2402; B05B7/2405; B05B7/2416; B05B7/2435
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
A method of producing a mist or aerosol comprising the steps of directing a stream of pressurized gas through a pressurized gas operated mist generating head, aerating a supply of liquid to form a foam comprising small gasfilled bubbles of the liquid, and introducing a stream of said foam into the stream of pressurized gas whereby the bubbles are broken by and minute particles of the liquid are atomized and dispersed in the gas stream.
Claim 2
Independent Claim
75 words
A method of producing a mist or aerosol comprising the steps of directing a stream of pressurized gas through a pressurized gas operated mist generating head, aerating a supply of liquid to form a foam comprising small gasfilled bubbles of the liquid, and introducing a stream of said foam into the stream of pressurized gas whereby the bubbles are broken by and minute particles of the liquid are atomized and dispersed in the gas stream.
Claim 3
Independent Claim
150 words
A method of producing a mist or aerosol by dispersing a liquid into a gaseous medium comprising the steps of aerating a quantity of the liquid to form a foam comprising small gas-filled bubbles of the liquid whereby the liquid film which surrounds the gas in the bubbles is under an internal lateral stress, directing a stream of said foam over a smooth unconfining surface and across an aperture formed in the surface to further internally laterally stress the liquid film as it approaches and passes over the aperture, and supplying under pressure and through said aperture and toward the stream of bubbles passing across the aperture a gas which serves as the gas medium of the mist, said gas medium further stressing the liquid film and reducing same to minute particles of liquid carried away from said aperture by the gas medium in the form of a fine mist.
Claim 4
Independent Claim
150 words
A method of producing a mist or aerosol by dispersing a liquid into a gaseous medium comprising the steps of aerating a quantity of the liquid to form a foam comprising small gas-filled bubbles of the liquid whereby the liquid film which surrounds the gas in the bubbles is under an internal lateral stress, directing a stream of said foam over a smooth unconfining surface and across an aperture formed in the surface to further internally laterally stress the liquid film as it approaches and passes over the aperture, and supplying under pressure and through said aperture and toward the stream of bubbles passing across the aperture a gas which serves as the gas medium of the mist, said gas medium further stressing the liquid film and reducing same to minute particles of liquid carried away from said aperture by the gas medium in the form of a fine mist.
Claim 5
Dependent Claim
15 words
The method as defined in claim 2 wherein said smooth unconfined surface is convexly shaped.
Claim 6
Independent Claim
73 words
A method of producing a fog comprising the steps of providing a stream of liquid-gas foam comprising small gas-filled liquid bubbles in which the liquid surrounding the gas is in the form of thin internally laterally stressed film, and directing into said stream of bubbles a stream of gas under pressure to further stress and rupture the liquid film to produce minute particles of liquid carried in the gas as a fine mist.
Claim 7
Independent Claim
73 words
A method of producing a fog comprising the steps of providing a stream of liquid-gas foam comprising small gas-filled liquid bubbles in which the liquid surrounding the gas is in the form of thin internally laterally stressed film, and directing into said stream of bubbles a stream of gas under pressure to further stress and rupture the liquid film to produce minute particles of liquid carried in the gas as a fine mist.
Claim 8
Dependent Claim
76 words
Apparatus for producing a mist comprising a pressurized gas operated mist generating head, means for directing a stream of pressurized gas through said mist generating head, means for aerating a supply of liquid to form small gas-filled bubbles of the liquid, and means for introducing a stream of said bubbles into the stream of pressurized gas whereby the bubbles are broken by and minute particles of the liquid are atomized and dispersed in the gas stream.
Claim 9
Dependent Claim
76 words
Apparatus for producing a mist comprising a pressurized gas operated mist generating head, means for directing a stream of pressurized gas through said mist generating head, means for aerating a supply of liquid to form small gas-filled bubbles of the liquid, and means for introducing a stream of said bubbles into the stream of pressurized gas whereby the bubbles are broken by and minute particles of the liquid are atomized and dispersed in the gas stream.
Claim 10
Dependent Claim
150 words
Apparatus for producing a mist or aerosol comprising means for confining a quantity of liquid, means for introducing a stream of gas into the liquid so confined to form a foam comprising small gas-filled bubbles of liquid whereby the liquid which surrounds the gas in the bubbles is in the form of a thin internally stressed film, means forming a smooth unconfining surface having an aperture formed therein, means for directing a stream of said foam over said surface and across said aperture to further internally stress the liquid film as it approaches and passes over said aperture, and means for supplying a gas medium under pressure through said aperture and toward the stream of foam passing across the aperture, whereby the liquid film is further stressed and reduced to minute particles which are carried away from said aperture in the form of a fine mist by the gas medium.
Claim 11
Dependent Claim
150 words
Apparatus for producing a mist or aerosol comprising means for confining a quantity of liquid, means for introducing a stream of gas into the liquid so confined to form a foam comprising small gas-filled bubbles of liquid whereby the liquid which surrounds the gas in the bubbles is in the form of a thin internally stressed film, means forming a smooth unconfining surface having an aperture formed therein, means for directing a stream of said foam over said surface and across said aperture to further internally stress the liquid film as it approaches and passes over said aperture, and means for supplying a gas medium under pressure through said aperture and toward the stream of foam passing across the aperture, whereby the liquid film is further stressed and reduced to minute particles which are carried away from said aperture in the form of a fine mist by the gas medium.
Claim 12
Dependent Claim
18 words
The invention as defined in claim 6 wherein a portion of said smooth unconfining surface is convexly shaped.
Claim 13
Dependent Claim
93 words
Apparatus for producing a liquid-gas mist of aerosol comprising means forming a reservoir for the liquid to be used in producing the mist, means forming a smooth downwardly sloping unconfining surface having an aperture formed therein, means for producing a stream of pressurized gas issuing frOm said aperture, and means for producing a foam comprising gas-filled bubbles of said liquid and for directing a stream of said foam onto said surface above said aperture for flowing gravitationally downwardly across said aperture to form a fine mist with said gas issuing from said aperture.
Claim 14
Dependent Claim
93 words
Apparatus for producing a liquid-gas mist of aerosol comprising means forming a reservoir for the liquid to be used in producing the mist, means forming a smooth downwardly sloping unconfining surface having an aperture formed therein, means for producing a stream of pressurized gas issuing frOm said aperture, and means for producing a foam comprising gas-filled bubbles of said liquid and for directing a stream of said foam onto said surface above said aperture for flowing gravitationally downwardly across said aperture to form a fine mist with said gas issuing from said aperture.
Claim 15
Dependent Claim
31 words
The invention as defined in claim 8 wherein said foam producing means comprises means forming a gas-operated venturi for drawing liquid from reservoir into said venturi means to generate said foam.
Claim 16
Dependent Claim
28 words
The invention as defined in claim 9 wherein said foam producing means further comprises an electric motor operated air compressor for supplying pressurized air to said venturi means.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |