US4915714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber bed element and process for removing small particles of liquids and solids from a gas stream
Assignee: AEROSOL TECHNOLOGY Inc A CORP OF NORTH CAROLINA
•
Filing: 1988-06-23
•
Granted: 1990-04-10
•
Expires: 2008-06-23
Abstract
Abstract A fiber bed element and process for utilizing such element for removing and collecting small particles of liquids or soluble solids from a gas stream, the element formed of one or more layers of pin-punched fiber supported by an appropriate supporting structure, the fiber layers being subjected to pressure to achieve a selected density and the punched holes functioning to create drainage paths through which liquids may drain. The fiber layer density and fiber size is maintained uniform throughout the element so that the pressure drop of the saturated filter bed element will be between 1.1 and 3.0 times the pressure drop of the dry filter bed as originally constructed and before use.
Inventors
- 👤 Richard K. Teague
- 👤 Dean M. Pruette
- 👤 Jeffrey L. Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:15
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0027; B01D46/003; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B01D39/20; B01D39/2003; B01D39/2017; B01D39/2027; B01D39/2041; B01D39/2068; B01D39/2082; B01D46/24; B01D46/2403; B01D46/2411; B01D2239/00; B01D2239/06; B01D2239/065; B01D2239/0654; B01D2239/069; B01D2239/0695; B01D2239/12; B01D2239/1233; B01D2239/1291; Y; Y10; Y10S; Y10S210/00; Y10S210/05; Y10S55/00; Y10S55/05; Y10S55/25; Y10T; Y10T442/00; Y10T442/60; Y10T442/682
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
101 words
A fiber bed element for removing and collecting small particles of liquids or soluble solids from a gas stream comprising: a layer of pin-punched fiber from 1/8" to 1' thick; means supporting said fiber layer; a second or more layers of pin-punched fiber positioned against said first layer and maintained by said supporting means, the pin-punched holes and said layers functioning to create drainage paths through which the liquids may drain, the multiple layered element having a density of from about 80 kilograms of fiber per cubic meter of bed to about 480 kilograms of fiber per cubic meter of bed.
Claim 2
Dependent Claim
101 words
A fiber bed element for removing and collecting small particles of liquids or soluble solids from a gas stream comprising: a layer of pin-punched fiber from 1/8" to 1' thick; means supporting said fiber layer; a second or more layers of pin-punched fiber positioned against said first layer and maintained by said supporting means, the pin-punched holes and said layers functioning to create drainage paths through which the liquids may drain, the multiple layered element having a density of from about 80 kilograms of fiber per cubic meter of bed to about 480 kilograms of fiber per cubic meter of bed.
Claim 3
Dependent Claim
12 words
The element as claimed in claim 1 wherein said fiber is glass.
Claim 4
Dependent Claim
21 words
The element as claimed in claim 2 wherein said fiber is from about 3 microns to about 35 microns in diameter.
Claim 5
Dependent Claim
12 words
The element as claimed in claim 1 wherein said fiber is polypropylene.
Claim 6
Dependent Claim
21 words
The element as claimed in claim 4 wherein said fiber is from about 20 microns to about 300 microns in diameter.
Claim 7
Dependent Claim
15 words
The element as claimed in claim 1 wherein all layers are of the same fiber.
Claim 8
Dependent Claim
23 words
The element as claimed in claim 6 wherein the fiber density is from about 80 kilograms to about 480 killigrams per cubic meter.
Claim 9
Dependent Claim
15 words
The element as claimed in claim 7 wherein the fiber layers are formed of metal.
Claim 10
Dependent Claim
15 words
The element as claimed in claim 7 wherein the fiber layers are formed of ceramic.
Claim 11
Dependent Claim
37 words
The element as claimed in claim 6 wherein the pressure drop of the saturated filter bed will be between 1.1 and 3.0 times the pressure drop of the dry filter bed as originally constructed and before use.
Claim 12
Dependent Claim
15 words
The element as claimed in claim 1 wherein the layers are of different sized fiber.
Claim 13
Independent Claim
91 words
A method for making a fiber bed element for removing and collecting small particles of liquids or soluble solids from a gas stream comprising the steps of: arranging a layer of fibers on a supporting screen; punching a plurality of pin holes in the fiber layer; placing additional fiber layers against the first layer and producing a plurality of pin holes as it is placed against the previous layer and supported by the screen; and positioning a retaining device against the top fiber layer to protect the bed surface from damage.
Claim 14
Independent Claim
91 words
A method for making a fiber bed element for removing and collecting small particles of liquids or soluble solids from a gas stream comprising the steps of: arranging a layer of fibers on a supporting screen; punching a plurality of pin holes in the fiber layer; placing additional fiber layers against the first layer and producing a plurality of pin holes as it is placed against the previous layer and supported by the screen; and positioning a retaining device against the top fiber layer to protect the bed surface from damage.
Claim 15
Dependent Claim
15 words
The method as claimed in claim 12 wherein the fiber layers are formed of glass.
Claim 16
Dependent Claim
21 words
The method as claimed in claim 13 wherein the fiber is from about 20 microns to about 300 microns in diameter.
Claim 17
Dependent Claim
15 words
The method as claimed in claim 12 wherein the fiber layers are formed of polypropylene.
Claim 18
Dependent Claim
15 words
The method as claimed in claim 15 wherein the fiber layers are formed of metal.
Claim 19
Dependent Claim
15 words
The method as claimed in claim 15 wherein the fiber layers are formed of ceramic.
Claim 20
Dependent Claim
53 words
The method as claimed in claim 15 wherein said fiber layers are compressed to achieve a density sufficient to provide high efficiency collection of submicron mist and the pressure drop of the saturated filter bed will be between 1.1 and 3.0 times the pressure drop of the dry filter bed as originally constructed.
Claim 21
Dependent Claim
15 words
The method as claimed in claim 12 wherein all layers are of the same fiber.
Claim 22
Dependent Claim
18 words
The method as claimed in claim 19 wherein the density and fiber size is uniform throughout the bed.
Claim 23
Dependent Claim
29 words
The method as claimed in claim 12 further comprising the step of compressing the fiber layers to achieve a density sufficient to provide high efficiency collection of submicron mist.
Claim 24
Dependent Claim
35 words
The method as claimed in claim 21 wherein the density of each fiber layer before compression is approximately 144 kilograms per cubic meter and the density after compression is approximately 176 kilograms per cubic meter.
Claim 25
Dependent Claim
20 words
The method as claimed in claim 12 wherein the fiber layers are positioned against each other to eliminate voidages therebetween.
Claim 26
Independent Claim
60 words
A method for making a fiber bed element for removing and collecting small particles of liquids or soluble solids from a gas stream comprising the steps of: punching a plurality of pin holes on a continuous fiber layer; arranging a continuous fiber layer on a supporting screen; and tensioning the continuous fiber layer to achieve a predetermined fiber layer density.
Claim 27
Independent Claim
60 words
A method for making a fiber bed element for removing and collecting small particles of liquids or soluble solids from a gas stream comprising the steps of: punching a plurality of pin holes on a continuous fiber layer; arranging a continuous fiber layer on a supporting screen; and tensioning the continuous fiber layer to achieve a predetermined fiber layer density.
Claim 28
Dependent Claim
21 words
The method as claimed in claim 24 wherein additional punched continuous fiber layers are arranged and tensioned on the supporting screen.
Claim 29
Dependent Claim
21 words
The method as claimed in claim 24 wherein the fiber is from about 3 microns to about 35 microns in diameter.
References Cited (Backward Citations)
US2883345A
Cited
US3003581A
Cited
US3231092A
Cited
US3344929A
Cited
US3352778A
Cited
US3918936A
Cited
US3802160A
Cited
US4093437A
Cited
US4086070A
Cited
US4070519A
Cited
US4155726A
Cited
GB1548871A
Cited
US4053290A
Cited
US4257791A
Cited
US4424248A
Cited
US4211661A
Cited
US4267626A
Cited
US4249918A
Cited
US4324574A
Cited
US4469734A
Cited
US4443233A
Cited
US4531957A
Cited
US4564377A
Cited
EP0172799A2
Cited
US4522876A
Cited
US4759782A
Cited
US4744806A
Cited
US4818257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |