US3833016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for precisely controlled dilution of fluid samples
Assignee: Meloy Laboratories Inc
•
Filing: 1973-01-02
•
Granted: 1974-09-03
•
Expires: 1993-01-02
Abstract
Abstract Concentrated fluid samples, such as flue gas samples, are diluted with high accuracy by precisely controlled diffusion through a permeable membrane. The membrane transversely divides a cylindrical housing into two parts, each part having a cup-shaped core therein with an end wall spaced from the membrane to provide transverse-radial flow passages at opposite sides of the membrane and with a side wall spaced from the side wall of the housing to provide longitudinal flow passages of annular cross-section. Fluid is admitted to each longitudinal passage by means of an enlarged circumferential flow distributing passage and is exhausted from each transverse passage by means of a conduit extending through the end wall of the associated core. Electric heating elements are supported upon the side wall of the housing and are controlled by temperature sensors in the transverse passages adjacent to the permeable membrane. The entire housing is surrounded by insulation so that precise control of the temperature within the housing is possible.
Inventors
- 👤 D Lucero
- 👤 J Barden
- 👤 J Paljug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:50
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/38; G01N33/00; G01N33/0004; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579; Y10T137/6606
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
184 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a substantially planar wall therein premeable to said first fluid which divides the interior of said housing into two parts, means providing a first flow passage for said first flow along one side of said wall, means providing a second flow passage for said second fluid along the opposite side of said wall, means including third and fourth flow passages in said housing for supplying said fluids to said first and second flow passages, respectively, each of said third and fourth passages having a thickness cross-dimension perpendicular to the flow direction therein that is very small relative to the remaining crossdimensions of the passage so that fluid flows therethrough as a thin sheet, means for exhausting fluid from said first and second passages, heater means secured to walls of said third and fourth passages, and temperature control means for controlling said heater means to control the temperature of fluid flowing in said third and fourth passages whereby the temperature of said permeable wall is controlled.
Claim 2
Dependent Claim
184 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a substantially planar wall therein premeable to said first fluid which divides the interior of said housing into two parts, means providing a first flow passage for said first flow along one side of said wall, means providing a second flow passage for said second fluid along the opposite side of said wall, means including third and fourth flow passages in said housing for supplying said fluids to said first and second flow passages, respectively, each of said third and fourth passages having a thickness cross-dimension perpendicular to the flow direction therein that is very small relative to the remaining crossdimensions of the passage so that fluid flows therethrough as a thin sheet, means for exhausting fluid from said first and second passages, heater means secured to walls of said third and fourth passages, and temperature control means for controlling said heater means to control the temperature of fluid flowing in said third and fourth passages whereby the temperature of said permeable wall is controlled.
Claim 3
Dependent Claim
22 words
Apparatus in accordance with claim 1, wherein said temperature controlling means comprises means for sensing the temperature adjacent to said permeable wall.
Claim 4
Dependent Claim
57 words
Apparatus in accordance with claim 1, wherein said third and fourth passages and said exhausting means are conNected to said first and second passages, respectively, such that the fluid flow along each side of said permeable wall between an associated fluid supplying means and fluid exhausting means is between peripheral and central regions of the permeable wall.
Claim 5
Dependent Claim
14 words
Apparatus in accordance with claim 1, wherein said permeable wall is a thin membrane.
Claim 6
Dependent Claim
24 words
Apparatus in accordance with claim 4, wherein said membrane is supported in a membrane holder having screens spaced at opposite sides of said membrane.
Claim 7
Dependent Claim
177 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a wall therein permeable to said first fluid which divides the interior of said housing into two parts, means providing a first flow passage for said first fluid along one side of said wall, means for providing a second flow passage for said second fluid along the opposite side of said wall, and means for controlling the temperature of the interior of said housing, said housing having a core in each part of said housing with a side wall spaced from a side wall of said housing to provide third and fourth flow passages along the side walls of said cores and said housing, said third and fourth flow passages communicating at one end thereof with said first and second flow passages, respectively, and having means at the opposite end thereof for admitting said first fluid and said second fluid thereto, respectively, and means providing exhaust conduits from said housing communicating with said first and second flow passages.
Claim 8
Dependent Claim
177 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a wall therein permeable to said first fluid which divides the interior of said housing into two parts, means providing a first flow passage for said first fluid along one side of said wall, means for providing a second flow passage for said second fluid along the opposite side of said wall, and means for controlling the temperature of the interior of said housing, said housing having a core in each part of said housing with a side wall spaced from a side wall of said housing to provide third and fourth flow passages along the side walls of said cores and said housing, said third and fourth flow passages communicating at one end thereof with said first and second flow passages, respectively, and having means at the opposite end thereof for admitting said first fluid and said second fluid thereto, respectively, and means providing exhaust conduits from said housing communicating with said first and second flow passages.
Claim 9
Dependent Claim
22 words
Apparatus in accordance with claim 6, wherein said temperature controlling means comprises heater means supported upon the side wall of said housing.
Claim 10
Dependent Claim
26 words
Apparatus in accordance with claim 6, wherein said housing and said cores are cylindrical and said third and fourth flow passages are long, thin large-surface-area passages.
Claim 11
Dependent Claim
11 words
Apparatus in accordance with claim 8, wherein said cores are cup-shaped.
Claim 12
Dependent Claim
53 words
Apparatus in accordance with claim 8, wherein each of said cores has a flange extending outwardly from an end thereof and engaging an associated end of said housing to position the opposite end of the cores in spaced relationship to said permeable wall and thereby to define said first and second flow passages.
Claim 13
Dependent Claim
38 words
Apparatus in accordance with claim 10, wherein each of said associated ends of the housing has a lip embracing the associated flange to position the side wall of each core relative to the side wall of the housing.
Claim 14
Dependent Claim
47 words
Apparatus in accordance with claim 8, wherein said housing comprises two longitudinally aligned cylindrical parts and wherein said permeable wall has means for supporting the same between opposed ends of said housing parts spaced from end walls of said cores to provide said first and second passages.
Claim 15
Dependent Claim
40 words
Apparatus in accordance with claim 8, wherein said admitting means comprises an enlarged circumferential flow distributing passage communicating with said one end of said third and fourth flow passages, respectively, and inlet conduits coupled to said flow distributing passages, respectively.
Claim 16
Dependent Claim
14 words
Apparatus in accordance with claim 6, wherein said permeable wall is a thin membrane.
Claim 17
Dependent Claim
116 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a wall therein permeable to said first fluid and having a core therein with a side wall of said housing spaced from a side wall of said core to provide a first flow passage therebetween and with an end wall of said core spaced from said permeable wall to provide a second flow passage coupled transversely to said first passage, means for admitting fluid to said first passage, and means for regulating the temperature of the fluid in said first passage, said temperature regulating means comprising heater means adjacent to a side wall of said first passage.
Claim 18
Dependent Claim
116 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a wall therein permeable to said first fluid and having a core therein with a side wall of said housing spaced from a side wall of said core to provide a first flow passage therebetween and with an end wall of said core spaced from said permeable wall to provide a second flow passage coupled transversely to said first passage, means for admitting fluid to said first passage, and means for regulating the temperature of the fluid in said first passage, said temperature regulating means comprising heater means adjacent to a side wall of said first passage.
Claim 19
Dependent Claim
22 words
Apparatus in accordance with claim 15, wherein said core has an exhaust passage coupled to said second pAssage through said end wall.
Claim 20
Dependent Claim
15 words
Apparatus in accordance with claim 15, wherein said housing and said core are hollow cylinders.
Claim 21
Dependent Claim
33 words
Apparatus in accordance with claim 15, wherein said heater means is supported upon the side wall of said housing and said temperature regulating means includes means for insulating said housing from ambient conditions.
Claim 22
Dependent Claim
25 words
Apparatus in accordance with claim 18, wherein said heater means comprises an electric heater supported upon the exterior of said side wall of said housing.
Claim 23
Dependent Claim
21 words
Apparatus in accordance with claim 15, wherein said means for admitting fluid to said first passage comprises a flow distributing passage.
Claim 24
Dependent Claim
14 words
Apparatus in accordance with claim 15, wherein said permeable wall is a thin membrane.
Claim 25
Dependent Claim
120 words
Fluid mixing apparatus comprising a pair of longitudinally aligned cylindrical housing parts defining a housing, with a fluid permeable wall interposed transversely between adjacent ends of said housing parts to divide the interior of said housing, and a pair of cylindrical cores within said housing parts, respectively, with a side wall of said cores spaced from a side wall of the associated housing parts to define longitudinal fluid passages therebetween and with an end wall of said cores spaced from said permeable wall to define transverse fluid passages therebetween communicating with the associated longitudinal passages, means for admitting fluid to the end of each longitudinal passage remote from said permeable wall, and means for exhausting fluid from said transverse passages.
Claim 26
Dependent Claim
120 words
Fluid mixing apparatus comprising a pair of longitudinally aligned cylindrical housing parts defining a housing, with a fluid permeable wall interposed transversely between adjacent ends of said housing parts to divide the interior of said housing, and a pair of cylindrical cores within said housing parts, respectively, with a side wall of said cores spaced from a side wall of the associated housing parts to define longitudinal fluid passages therebetween and with an end wall of said cores spaced from said permeable wall to define transverse fluid passages therebetween communicating with the associated longitudinal passages, means for admitting fluid to the end of each longitudinal passage remote from said permeable wall, and means for exhausting fluid from said transverse passages.
Claim 27
Dependent Claim
19 words
Apparatus in accordance with claim 22, the last-mentioned means comprising conduits extending through said end walls of said cores.
Claim 28
Dependent Claim
35 words
Apparatus in accordance with claim 22, wherein each of said admitting means comprises an enlarged circumferential flow distribution passage at said end of said longitudinal passages, respectively, and conduits coupled to said flow distributing passages.
Claim 29
Dependent Claim
38 words
Apparatus in accordance with claim 22, wherein said cores have exterior flanges at the open end thereof engaging an adjacent end of said housing parts, respectively, to limit the insertion of said cores into said housing parts, respectively.
Claim 30
Dependent Claim
29 words
Apparatus in accordance with claim 22, further comprising heater means supported upon the exterior of said side walls of said housing parts, and insulation means surrounding said housing parts.
Claim 31
Dependent Claim
14 words
Apparatus in accordance with claim 22, wherein said permeable wall is a thin membrane.
Claim 32
Dependent Claim
20 words
Apparatus in accordance with claim 27, wherein said membrane is supported upon an annular membrane holder at the periphery thereof.
Claim 33
Dependent Claim
21 words
Apparatus in accordance with claim 28 wherein said membrane is covered with a grid to support the same over its surface.
Claim 34
Dependent Claim
50 words
Apparatus in accordance with claim 28, said housing parts having means for detachably coupling the same together with said membrane holder interposed therebetween, said apparatus comprising an additional membrane holder adapted to be substituted for the first-mentioned membrane holder between said housing parts and providing a different exposed membrane area.
Claim 35
Dependent Claim
13 words
Apparatus in accordance with claim 22, wherein each of said cores is cup-shaped.
Claim 36
Dependent Claim
43 words
Apparatus in accordance with claim 22, wherein each of said longitudinal passages has a thickness cross-dimension perpendicular to the flow direction therein that is very small compared to the remaining cross-dimensions of the passage, so that fluid flows therethrough as a thin sheet.
Claim 37
Dependent Claim
128 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a substantially planar wall therein permeable to said first fluid which separates first and second flow passages at opposite sides of said wall, means for supplying said first and second fluids to said first and second passages, respectively, means for exhausting fluid from said first and second passages, respectively, each of said first and second pasages being arraNged with respect to the associated supplying and exhausting means so that fluid flow at each side of said permeable wall between the associated supplying means and exhausting means is between peripheral and central regions of said permeable wall, and means for controlling the temperature of said fluids and said permeable wall.
Claim 38
Dependent Claim
128 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a substantially planar wall therein permeable to said first fluid which separates first and second flow passages at opposite sides of said wall, means for supplying said first and second fluids to said first and second passages, respectively, means for exhausting fluid from said first and second passages, respectively, each of said first and second pasages being arraNged with respect to the associated supplying and exhausting means so that fluid flow at each side of said permeable wall between the associated supplying means and exhausting means is between peripheral and central regions of said permeable wall, and means for controlling the temperature of said fluids and said permeable wall.
Claim 39
Dependent Claim
30 words
Apparatus in accordance with claim 33, wherein each of said supplying means provides fluid from the entire periphery of the permeable wall to a central region of the permeable wall.
Claim 40
Dependent Claim
12 words
Apparatus in accordance with claim 33, wherein said permeable wall is circular.
Claim 41
Dependent Claim
60 words
Apparatus in accordance with claim 33, wherein said means for supplying said first and second fluids to said first and second passages comprises third and fourth passages connected to said first and second passages, respectively, and wherein said temperature controlling means comprises heater means adjacent to said third and fourth passages and temperature sensor means adjacent to said permable wall.
Claim 42
Dependent Claim
35 words
Apparatus in accordance with claim 36, wherein each of said third and fourth passages is dimensioned such that fluid flows therethrough as a sheet of large surface cross-dimensions relative to the thickness of the sheet.
Claim 43
Dependent Claim
33 words
Apparatus in accordance with claim 33, wherein said means for controlling the temperature of said fluids comprises a heater means supported upon said housing and temperature sensor means adjacent to said permeable wall.
Claim 44
Dependent Claim
14 words
Apparatus in accordance with claim 33, wherein said permeable wall is a thin membrane.
Claim 45
Dependent Claim
105 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a wall therein permeable to said first fluid separating first and second fluid flow passages at opposite sides of said wall, means including third and fourth flow passages in said housing for supplying said first and second fluids to said first and second passages, respectively, means for exhausting fluid from said first and second passages, respectively, and means including a temperature sensor adjacent to said permeable wall and heaters adjacent to said third and fourth passages for regulating the temperature of said fluids and said wall.
Claim 46
Dependent Claim
105 words
Apparatus for providing precisely controlled permeation of a first fluid into a second fluid, which comprises a housing having a wall therein permeable to said first fluid separating first and second fluid flow passages at opposite sides of said wall, means including third and fourth flow passages in said housing for supplying said first and second fluids to said first and second passages, respectively, means for exhausting fluid from said first and second passages, respectively, and means including a temperature sensor adjacent to said permeable wall and heaters adjacent to said third and fourth passages for regulating the temperature of said fluids and said wall.
Claim 47
Dependent Claim
35 words
Apparatus in accordance with claim 40, wherein each of said third and fourth passages is dimensioned such that fluid flows therethrough as a sheet of large surface cross-dimensions relative to the thickness of the sheet.
Claim 48
Dependent Claim
14 words
Apparatus in accordance with claim 40, wherein said permeable wall is a thin membrane.
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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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |