Patent US4098722A successfully refreshed from Google Patents.
US4098722A
Expired / Lapsed
US
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Methods of fabricating bodies
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1976-08-05
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Granted: 1978-07-04
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Expires: 1996-08-05
Abstract
Abstract The method comprises the steps of: forming one or more sheets of material in a single sheet of material with at least one generally planar region and at least one region of first corrugations. Second corrugations which are smaller than the first corrugations are then superimposed on the, or each, generally planar region and the, or each, corrugated region. The generally planar region, or regions are then laid onto the region, or regions that are provided with the first corrugations.
Inventors
- 👤 James Anthony Cairns
- 👤 Michael Lesney Noakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:55
CPC Classifications
B; B21; B21D; B21D13/00; B21D13/04; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B21D13/10; B21D53/00; B21D53/88; F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; F01N3/2814; F01N3/2821; F01N2330/00; F01N2330/02; F01N2330/04; F01N2330/30; F01N2330/32; F01N2330/321; F01N2330/40; F01N2530/00; F01N2530/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49345; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24702
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
194 words
A method of making a catalyst body having a plurality of channels extending therethrough comprising the steps of: working at least one sheet of metal to provide at least one generally planar region and at least one region of first corrugations; working said at least one sheet of metal to superimpose on each generally planar region and on each region of first corrugations, a set of second corrugations smaller than the first corrugations; laying each generally planar region onto a region of first corrugations to fabricate a body having planar regions alongside regions of first corrugations with said second corrugations superimposed on the planar regions and the regions of first corrugations; dipping the body into an aqueous wash coating composition comprising a carrier material for a catalyst, removing the body from the aqueous solution, and drying the body to provide a wash coated layer of said carrier material thereon; and depositing a catalytic material on the wash coating of carrier material; the size of said second corrugations being such that when the body is removed from the aqueous wash coating composition, a uniform layer of the wash coating composition is retained on the body.
Claim 2
Independent Claim
194 words
A method of making a catalyst body having a plurality of channels extending therethrough comprising the steps of: working at least one sheet of metal to provide at least one generally planar region and at least one region of first corrugations; working said at least one sheet of metal to superimpose on each generally planar region and on each region of first corrugations, a set of second corrugations smaller than the first corrugations; laying each generally planar region onto a region of first corrugations to fabricate a body having planar regions alongside regions of first corrugations with said second corrugations superimposed on the planar regions and the regions of first corrugations; dipping the body into an aqueous wash coating composition comprising a carrier material for a catalyst, removing the body from the aqueous solution, and drying the body to provide a wash coated layer of said carrier material thereon; and depositing a catalytic material on the wash coating of carrier material; the size of said second corrugations being such that when the body is removed from the aqueous wash coating composition, a uniform layer of the wash coating composition is retained on the body.
Claim 3
Dependent Claim
26 words
A method according to claim 1 wherein the second corrugations are from 0.002 to 0.009 inches crest to crest and 0.002 to 0.009 inches in pitch.
Claim 4
Dependent Claim
16 words
A method according to claim 1 wherein said first corrugations extend lengthwise across said metal sheet.
Claim 5
Dependent Claim
15 words
A method according to claim 3 wherein said second corrugations extend longitudinally across said body.
Claim 6
Dependent Claim
25 words
A method according to claim 1 wherein said generally planar region and said region of first corrugations are provided on a single sheet of metal.
Claim 7
Dependent Claim
17 words
A method according to claim 5 wherein said body is fabricated from said single sheet of metal.
Claim 8
Dependent Claim
19 words
A method according to claim 6 wherein said body is fabricated by winding said single sheet into a coil.
Claim 9
Dependent Claim
25 words
A method according to claim 1 wherein said second set of corrugations is provided on said metal strip before the first corrugations are provided thereon.
Claim 10
Dependent Claim
29 words
A method according to claim 1 wherein said catalytic material is deposited on said body by wash coating a slurry containing catalytic material onto the layer of carrier material.
Claim 11
Dependent Claim
23 words
A method according to claim 1 wherein said second corrugations extend lengthwise across said metal sheet at an angle to said first corrugations.
Claim 12
Dependent Claim
115 words
A catalyst body having a plurality of channels therethrough comprising: at least one sheet of metal having at least one generally planar region and at least one region of first corrugations; each generally planar region being disposed adjacent a region of first corrugations; said generally planar regions and said regions of first corrugations each bearing a superimposed set of second corrugations smaller than said first corrugations and having a pitch of 0.002 to 0.009 inches and being from 0.002 to 0.009 inches crest to crest; a uniform layer of a wash-coated catalyst carrier material coated on the planar and corrugated surfaces of said body; and a catalytic material deposited on said layer of carrier material.
Claim 13
Dependent Claim
115 words
A catalyst body having a plurality of channels therethrough comprising: at least one sheet of metal having at least one generally planar region and at least one region of first corrugations; each generally planar region being disposed adjacent a region of first corrugations; said generally planar regions and said regions of first corrugations each bearing a superimposed set of second corrugations smaller than said first corrugations and having a pitch of 0.002 to 0.009 inches and being from 0.002 to 0.009 inches crest to crest; a uniform layer of a wash-coated catalyst carrier material coated on the planar and corrugated surfaces of said body; and a catalytic material deposited on said layer of carrier material.
Claim 14
Dependent Claim
17 words
A catalyst body according to claim 1 wherein said first corrugations extend lengthwise across said metal sheet.
Claim 15
Dependent Claim
17 words
A catalyst body according to claim 12 wherein said second corrugations extend lengthwise across said metal sheet.
Claim 16
Dependent Claim
27 words
A catalyst body according to claim 13 wherein said second corrugations extend lengthwise at an angle with respect to the first corrugations on which they are superimposed.
Claim 17
Dependent Claim
26 words
A catalyst body according to claim 11 wherein said planar regions and said regions of first corrugations are both provided on a single sheet of metal.
Claim 18
Dependent Claim
16 words
A catalyst body according to claim 15 wherein said body comprises said single sheet of metal.
Claim 19
Dependent Claim
21 words
A catalyst body according to claim 15 wherein said single sheet of metal is wound in the form of a coil.
Claim 20
Dependent Claim
15 words
A catalyst body according to claim 11 wherein the first and second corrugations are parallel.
Claim 21
Dependent Claim
15 words
A catalyst body according to claim 11 wherein said metal comprises an aluminum-bearing ferritic steel.
References Cited (Backward Citations)
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US2160677A
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GB753658A
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US3217845A
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US3966646A
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US3992330A
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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) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |