Patent US4021386A successfully refreshed from Google Patents.
US4021386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of combining at least two chemical reaction components and apparatus for carrying out the method
Assignee: Individual
•
Filing: 1975-09-24
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Granted: 1977-05-03
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Expires: 1995-09-24
Abstract
Abstract A method and apparatus for combining at least two chemical reaction components, a foam component which is caused to form a foam, and an aerosol component which is atomized to aerosol form, prior to their combination in a mixing chamber. In order to obtain a very homogeneous admixing of the aerosol component to the foam component for producing cell structures having very thin cell partition walls, the foam component is caused to rotate when it is being advanced through the mixing chamber and sprayed with the finely distributed droplets of the aerosol component.
Inventors
- 👤 Gustav Verner Lindstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:10
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/74; B29B7/7404; B29B7/7409; B29B7/7419; Y; Y10; Y10S; Y10S261/00; Y10S261/26; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
147 words
A method of combining in a mixing chamber at least two chemical reaction components, one of which is a foam component which is caused to form a foam, and the other of which is an aerosol component which is atomized to aerosol form, prior to their combination in the mixing chamber, comprising: supplying the foam component to the mixing chamber via an annular slot; advancing the foam to the annular slot through two helical grooves which are offset substantially 180° relative to each other and which terminate with slightly different pitches; rotating the foam component while advancing same through the mixing chamber; rotating bubbles formed in the foam component relative to each other when the foam is being advanced through the mixing chamber; and spraying said foam component with the finely distributed droplets of the aerosol component while it is being rotatingly advanced through the mixing chamber.
Claim 2
Independent Claim
147 words
A method of combining in a mixing chamber at least two chemical reaction components, one of which is a foam component which is caused to form a foam, and the other of which is an aerosol component which is atomized to aerosol form, prior to their combination in the mixing chamber, comprising: supplying the foam component to the mixing chamber via an annular slot; advancing the foam to the annular slot through two helical grooves which are offset substantially 180° relative to each other and which terminate with slightly different pitches; rotating the foam component while advancing same through the mixing chamber; rotating bubbles formed in the foam component relative to each other when the foam is being advanced through the mixing chamber; and spraying said foam component with the finely distributed droplets of the aerosol component while it is being rotatingly advanced through the mixing chamber.
Claim 3
Dependent Claim
59 words
A method according to claim 1, comprising: feeding the foam component into the mixing chamber through said helical grooves in the form of a helically rotating, substantially ring-shaped mass; and spraying the aerosol component into the mixing chamber in the form of a conically diverging jet from a point located substantially on the central axis of said ring-shaped mass.
Claim 4
Dependent Claim
57 words
A method according to claim 1, comprising: supplying compressed air to the foam component to form said foam prior to being advanced through the mixing chamber; and selectively connecting and disconnecting the flows of the foam component, the aerosol component and the compressed air utilized for the foam production substantially simultaneously with respective compressed-air controlled diaphragm valves.
Claim 5
Dependent Claim
21 words
A method according to claim 3, comprising controlling said compressed-air controlled diaphragm valves with a common source of control compressed air.
Claim 6
Independent Claim
125 words
A method of combining in a mixing chamber at least two chemical reaction components, one of which is a foam component which is caused to form a foam, and the other of which is an aerosol component which is atomized to aerosol form, prior to their combination in the mixing chamber, comprising: supplying the foam component to the mixing chamber via an annular slot; advancing the foam to the annular slot through two helical grooves which are offset substantially 180° relative to each other and which terminate with different pitches; rotating the foam component while advancing same through the mixing chamber; and spraying said foam component with the finely distributed droplets of the aerosol component while it is being rotatingly advanced through the mixing chamber.
Claim 7
Independent Claim
125 words
A method of combining in a mixing chamber at least two chemical reaction components, one of which is a foam component which is caused to form a foam, and the other of which is an aerosol component which is atomized to aerosol form, prior to their combination in the mixing chamber, comprising: supplying the foam component to the mixing chamber via an annular slot; advancing the foam to the annular slot through two helical grooves which are offset substantially 180° relative to each other and which terminate with different pitches; rotating the foam component while advancing same through the mixing chamber; and spraying said foam component with the finely distributed droplets of the aerosol component while it is being rotatingly advanced through the mixing chamber.
Claim 8
Dependent Claim
59 words
A method according to claim 5, comprising: feeding the foam component into the mixing chamber through said helical grooves in the form of a helically rotating, substantially ring-shaped mass; and spraying the aerosol component into the mixing chamber in the form of a conically diverging jet from a point located substantially on the central axis of said ring-shaped mass.
Claim 9
Dependent Claim
57 words
A method according to claim 5, comprising: supplying compressed air to the foam component to form said foam prior to being advanced through the mixing chamber; and selectively connecting and disconnecting the flows of the foam component, the aerosol component and the compressed air utilized for the foam production substantially simultaneously with respective compressed-air controlled diaphragm valves.
Claim 10
Dependent Claim
21 words
A method according to claim 7, comprising controlling said compressed-air controlled diaphragm valves with a common source of control compressed air.
Claim 11
Independent Claim
176 words
An apparatus for combining, in a mixing chamber having an annular inlet slot, at least two chemical reaction components, one of which is a foam component which is caused to form a foam, and the other of which is an aerosol component which is atomized to aerosol form, prior to their combination in the mixing chamber, comprising: means for supplying the foam component to the annular inlet slot of the mixing chamber and for causing the foam component to rotate when it is being advanced through the mixing chamber, said foam component supplying means including two helical grooves which are offset substantially 180° relative to each other and which terminate with slightly different pitches for feeding the foam component to the annular inlet slot of the mixing chamber; and spraying means including a nozzle coupled to the mixing chamber for spraying the rotating foam component with atomized droplets of the aerosol component while the foam component is being rotatingly advanced in the mixing chamber, the nozzle being located substantially at the center of the annular slot.
Claim 12
Independent Claim
176 words
An apparatus for combining, in a mixing chamber having an annular inlet slot, at least two chemical reaction components, one of which is a foam component which is caused to form a foam, and the other of which is an aerosol component which is atomized to aerosol form, prior to their combination in the mixing chamber, comprising: means for supplying the foam component to the annular inlet slot of the mixing chamber and for causing the foam component to rotate when it is being advanced through the mixing chamber, said foam component supplying means including two helical grooves which are offset substantially 180° relative to each other and which terminate with slightly different pitches for feeding the foam component to the annular inlet slot of the mixing chamber; and spraying means including a nozzle coupled to the mixing chamber for spraying the rotating foam component with atomized droplets of the aerosol component while the foam component is being rotatingly advanced in the mixing chamber, the nozzle being located substantially at the center of the annular slot.
Claim 13
Dependent Claim
21 words
An apparatus according to claim 9, wherein the difference in pitch between the outer ends of said grooves is about 2°-6°.
Claim 14
Dependent Claim
21 words
An apparatus according to claim 10, wherein the difference in pitch between the outer ends of said grooves is about 4°.
Claim 15
Dependent Claim
64 words
An apparatus according to claim 9, comprising supply conduits for the foam and aerosol components and a supply line for compressed air used for foam production, and further comprising compressed-air controlled diaphragm valves coupled to substantially simultaneously open and close, respectively, the supply conduits for the foam component and aerosol component and the supply line for the compressed air used for the foam production.
Claim 16
Dependent Claim
41 words
An apparatus according to claim 12, wherein said means for supplying the foam component to the mixing chamber comprises means for mixing the foam component with the compressed air used for foam production prior to supplying thereof to the mixing chamber.
Claim 17
Dependent Claim
20 words
An apparatus according to claim 3, wherein said compressed air and said foam component are mixed in said helical grooves.
Claim 18
Dependent Claim
53 words
An apparatus according to claim 12, wherein each of said diaphragm valves comprises a flexible diaphragm and two passageways opening on one side of said diaphragm, said diaphragm being arranged to prevent and permit, respectively, communication between the respective two passageways in response to a pressure difference between both sides of the diaphragm.
Claim 19
Dependent Claim
37 words
An apparatus according to claim 15, comprising a source of control compressed air coupled to the side of said flexible diaphragms of each of said valves which is opposite the side on which said two passageways open.
Claim 20
Dependent Claim
25 words
An apparatus according to claim 15, wherein said flexible diaphragm is arranged to prevent communication between the respective two passageways by sealing the openings thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |