Patent US3870082A successfully refreshed from Google Patents.
US3870082A
Expired / Lapsed
US
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Venturi-type devices
Assignee: Micron Engineering Inc
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Filing: 1973-06-18
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Granted: 1975-03-11
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Expires: 1993-06-18
Abstract
Abstract A venturi-type device comprises a fluid flow passage containing in the direction of fluid flow, an upstream section of progressively reducing cross-section, a venturi throat section, and a downstream section of progressively increasing crosssection. The necessary changes in cross-section are produced by a plurality of physical barriers disposed in the passage and spaced from each other transverse to the direction of flow of the fluid, the changes in cross-section being caused by differences in length of the barriers. The barriers may be substantially flat parallel plates disposed longitudinally of the direction of the flow. The surfaces of the barriers may be coated with liquid or solid material. In an exchange device the barriers may be hollow to form other passageways for the flow of a second fluid through the device in exchange relation with the first fluid passing between the barriers.
Inventors
- 👤 Richard Adolf Holl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:00
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/10; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
161 words
A device of venturi type comprising a passage member providing a passage for the flow of fluid therein in a predetermined direction, the passage having in the direction of flow of fluid in the passage and in the stated order an upstream section, a throat section and a downstream section, the flow cross-sectional area of the passage in the upstream section decreasing progressively toward the throat section, and the flow cross-sectional area in the downstream section increasing progressively away from the throat section, wherein at least one of said upstream and downstream sections comprises a plurality of physical barriers disposed in the passage, which barriers are spaced from each other transverse to said direction of flow and decrease the flow cross-sectional area of the part of the passage in which they are located, the said change of flow crosssectional area being caused by differences in the said direction of flow of the physical lengths of the barriers in the corresponding section.
Claim 2
Independent Claim
161 words
A device of venturi type comprising a passage member providing a passage for the flow of fluid therein in a predetermined direction, the passage having in the direction of flow of fluid in the passage and in the stated order an upstream section, a throat section and a downstream section, the flow cross-sectional area of the passage in the upstream section decreasing progressively toward the throat section, and the flow cross-sectional area in the downstream section increasing progressively away from the throat section, wherein at least one of said upstream and downstream sections comprises a plurality of physical barriers disposed in the passage, which barriers are spaced from each other transverse to said direction of flow and decrease the flow cross-sectional area of the part of the passage in which they are located, the said change of flow crosssectional area being caused by differences in the said direction of flow of the physical lengths of the barriers in the corresponding section.
Claim 3
Independent Claim
161 words
A device of venturi type comprising a passage member providing a passage for the flow of fluid therein in a predetermined direction, the passage having in the direction of flow of fluid in the passage and in the stated order an upstream section, a throat section and a downstream section, the flow cross-sectional area of the passage in the upstream section decreasing progressively toward the throat section, and the flow cross-sectional area in the downstream section increasing progressively away from the throat section, wherein at least one of said upstream and downstream sections comprises a plurality of physical barriers disposed in the passage, which barriers are spaced from each other transverse to said direction of flow and decrease the flow cross-sectional area of the part of the passage in which they are located, the said change of flow cross-sectional area being caused by differences in the said direction of flow of the physical lengths of the barriers in the corresponding section.
Claim 4
Independent Claim
161 words
A device of venturi type comprising a passage member providing a passage for the flow of fluid therein in a predetermined direction, the passage having in the direction of flow of fluid in the passage and in the stated order an upstream section, a throat section and a downstream section, the flow cross-sectional area of the passage in the upstream section decreasing progressively toward the throat section, and the flow cross-sectional area in the downstream section increasing progressively away from the throat section, wherein at least one of said upstream and downstream sections comprises a plurality of physical barriers disposed in the passage, which barriers are spaced from each other transverse to said direction of flow and decrease the flow cross-sectional area of the part of the passage in which they are located, the said change of flow cross-sectional area being caused by differences in the said direction of flow of the physical lengths of the barriers in the corresponding section.
Claim 5
Dependent Claim
23 words
A device as claimed in claim 1, wherein both of the upstream and downstream sections comprise parallel physical barriers of different physical length.
Claim 6
Dependent Claim
26 words
A device as claimed in claim 2 wherein the physical barriers in both of the upstream and downstream sections comprise a plurality of spaced parallel plates.
Claim 7
Dependent Claim
53 words
A device as claimed in claim 3, and for passage of gas flow having solid material entrained therein, wherein the minimum spacing between immediately adjacent plates of said upstream and downstream plates is from 5 to 15 times the size of the largest particles of solid material to be handled by the device.
Claim 8
Dependent Claim
48 words
A device as claimed in claim 2, and for passage of gas flow having solid material entrained therein, wherein the minimum spacing between immediately adjacent physical barriers is from 5 to 15 times the size of the largest particles of solid material to be handled by the device.
Claim 9
Dependent Claim
30 words
A device as claimed in claim 2, and comprising a fluid reaction or contacting device, including means for supplying a liquid to the physical barriers to coat the surfaces thereof.
Claim 10
Dependent Claim
33 words
A device as claimed in claim 2, and comprising a fluid reAction or contacting device, wherein surfaces of the physical barriers are coated with a solid material to be contacted by the fluid.
Claim 11
Dependent Claim
27 words
A device as claimed in claim 1, wherein the physical barriers in either of the upstream or the downstream sections comprise a plurality of spaced parallel plates.
Claim 12
Dependent Claim
32 words
A device as claimed in claim 1, wherein the said throat section comprises a plurality of spaced parallel physical barriers all of the same physical length in the said direction of flow.
Claim 13
Dependent Claim
18 words
A device as claimed in claim 9, wherein the throat section comprises a plurality of spaced parallel plates.
Claim 14
Dependent Claim
51 words
A device as claimed in claim 10, and for passage of gas flow having solid material entrained therein, wherein the minimum spacing between immediately adjacent plates of said throat plates is from 5 to 15 times the size of the largest particles of solid material to be handled by the device.
Claim 15
Dependent Claim
32 words
A device as claimed in claim 9, wherein the throat section comprises a plurality of section segments with the physical barrier segments in each section segment all of the same physical length.
Claim 16
Dependent Claim
30 words
A device as claimed in claim 9, and comprising a fluid reaction or contacting device, including means for supplying a liquid to the physical barriers to coat the surfaces thereof.
Claim 17
Dependent Claim
33 words
A device as claimed in claim 9, and comprising a fluid reaction or contacting device, wherein surfaces of the physical barriers are coated with a solid material to be contacted by the fluid.
Claim 18
Dependent Claim
42 words
A device as claimed in claim 9, wherein at least some of the barriers of the throat section are hollow and constitute flow passages for a second fluid to be in heat exchange relation with the first-mentioned fluid passing between the barriers.
Claim 19
Dependent Claim
19 words
A device as claimed in claim 9, wherein the throat section comprises a plurality of spaced parallel mesh plates.
Claim 20
Dependent Claim
60 words
A device as claimed in claim 1, wherein all of the said sections comprise parallel physical barriers that extend in the same direction of flow, the barriers of the upstream section being of different physical length, the barriers of the throat section being of the same physical length and the barriers of the downstream section being of different physical length.
Claim 21
Dependent Claim
27 words
A device as claimed in claim 17, wherein the barriers of the upstream and throat sections are constituted by flat parallel plates extending between the two sections.
Claim 22
Dependent Claim
27 words
A device as claimed in claim 17, wherein the barriers of the downstream and throat sections are constituted by flat parallel plates extending between the two sections.
Claim 23
Dependent Claim
28 words
A device as claimed in claim 17, wherein the barriers of the upstream, throat and downstream sections are constituted by flat parallel plates extending between the three sections.
Claim 24
Dependent Claim
29 words
A device as claimed in claim 20, wherein the barriers of the upstream, throat and downstream sections are constituted by spaced parallel mesh plates extending between the three sections.
Claim 25
Dependent Claim
16 words
A device as claimed in claim 17, wherein all of said barriers comprise spaced parallel plates.
Claim 26
Dependent Claim
56 words
A device as claimed in claim 19, and for passage of gas flow having solid material entrained therein, wherein the minimum spacing between immediately adjacent plates of all of said upstream, downstream and throat plates is from 5 to 15 times the size of the largest particles of solid material to be handled by the device.
Claim 27
Dependent Claim
30 words
A device as claimed in claim 17, and comprising a fluid reaction or contacting device, including means for supplying a liquid to the physical barriers to coat the surfaces thereof.
Claim 28
Dependent Claim
33 words
A device as claimed in claim 17, and comprising a fluid reaction or contacting device, wherein surfaces of the physical barriers are coated with a solid material to be contacted by the fluid.
Claim 29
Dependent Claim
45 words
A device as claimed in claim 1, wherein the upstream section comprises a plurality of parallel barriers of different physical lengths, said upstream sEction comprising a plurality of section segments with the physical barrier segments in each section segment all of the same physical length.
Claim 30
Dependent Claim
45 words
A device as claimed in claim 1, wherein the downstream section comprises a plurality of parallel barriers of different physical lengths, said downstream section comprising a plurality of section segments with the physical barrier segments in each section segment all of the same physical length.
Claim 31
Dependent Claim
51 words
A device as claimed in claim 1, wherein the upstream and downstream sections each comprise a plurality of parallel barriers of different physical lengths, each said upstream and downstream section comprising a plurality of section segments with the physical barrier segments in each section segment all of the same physical length.
Claim 32
Dependent Claim
62 words
A device as claimed in claim 1, wherein the upstream and downstream sections each comprise a plurality of parallel barriers of different physical lengths, and the throat section comprises a plurality of parallel barriers of the same physical length, each section comprising a plurality of section segments with the physical barrier segments in each section segment all of the same physical length.
Claim 33
Dependent Claim
21 words
A device as claimed in claim 29, wherein each barrier of each of the said section segments comprises a mesh plate.
Claim 34
Dependent Claim
48 words
A device as claimed in claim 1, and for passage of gas flow having solid material entrained therein, wherein the minimum spacing between immediately adjacent physical barriers is from 5 to 15 times the size of the largest particles of solid material to be handled by the device.
Claim 35
Dependent Claim
23 words
A device as claimed in claim 31, wherein the said minimum spacing is about 10 times the said size of the largest particle.
Claim 36
Dependent Claim
30 words
A device as claimed in claim 1, and comprising a fluid reaction or contacting device, including means for supplying a liquid to the physical barriers to coat the surfaces thereof.
Claim 37
Dependent Claim
33 words
A device as claimed in claim 1, and comprising a fluid reaction or contacting device, wherein surfaces of the physical barriers are coated with a solid material to be contacted by the fluid.
References Cited (Backward Citations)
US1236431A
Cited
US1648708A
Cited
US1702274A
Cited
US1940790A
Cited
US2489893A
Cited
US2466684A
Cited
US2700595A
Cited
US2957308A
Cited
US3181287A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |