Method for coating a filter substrate
US-2018229228-A1 · Aug 16, 2018 · US
Apparatus and method for coating substrates with washcoats
US11759818B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11759818-B2 |
| Application number | US-202217811661-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 11, 2022 |
| Priority date | Dec 10, 2019 |
| Publication date | Sep 19, 2023 |
| Grant date | Sep 19, 2023 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The disclosure relates to a substrate coating apparatus that comprises a source of a washcoat; a washcoat showerhead for discharging the washcoat towards an upper surface of a substrate; a conduit fluidly connecting the source of the washcoat to the washcoat showerhead for supplying washcoat to the washcoat showerhead; a headset for engaging the substrate to locate the upper surface of the substrate below the washcoat showerhead; and a vacuum generator for drawing the washcoat discharged from the washcoat showerhead through the substrate. The headset comprises a partition comprising a plurality of holes, the partition being located in between the washcoat showerhead and the upper surface of the substrate when the substrate is engaged in the headset so as to maintain a first gap between a lower face of the partition and the upper surface of the substrate.
First claim
Opening claim text (preview).
The invention claimed is: 1. A substrate coating apparatus comprising: a source of a washcoat; a washcoat showerhead for discharging the washcoat towards an upper surface of a substrate; a conduit fluidly connecting the source of the washcoat to the washcoat showerhead for supplying washcoat to the washcoat showerhead; a headset for engaging the substrate to locate the upper surface of the substrate below the washcoat showerhead; and a vacuum generator for drawing the washcoat discharged from the washcoat showerhead through the substrate; wherein the headset comprises a partition comprising a plurality of holes, the partition being located in between the washcoat showerhead and the upper surface of the substrate when the substrate is engaged in the headset so as to maintain a first gap between a lower face of the partition and the upper surface of the substrate. 2. The substrate coating apparatus according to claim 1 , wherein the partition is fixedly located in the headset so as to be held stationary relative to a housing of the headset. 3. The substrate coating apparatus according to claim 1 , wherein the first gap is between 2 and 7 mm. 4. The substrate coating apparatus according to claim 1 , wherein the percentage open area of the partition, defined as the percentage of the total area of the upper face of the partition that is comprised by the holes, is between 35 and 55%. 5. The substrate coating apparatus according to claim 1 , wherein the percentage open area of the partition, defined as the percentage of the total area of the upper face of the partition that is comprised by the holes, is between 40 and 50%. 6. The substrate coating apparatus according to claim 1 , wherein the headset further comprises a headset seal and the partition is arranged in the headset above the headset seal. 7. A substrate coating system comprising the substrate coating apparatus of claim 1 and a substrate, wherein the upper surface of the substrate is non-planar; and wherein the upper surface of the substrate comprises a groove or cut-out, which extends to the sidewall of the substrate thereby defining a gap in the sidewall.
Assignees
Inventors
Classifications
Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths · CPC title
- B01J37/0215Primary
Coating · CPC title
- B05C5/002Primary
the work consisting of separate articles (B05C5/0208 takes precedence) · CPC title
- B05C5/0225Primary
characterised by flow controlling means, e.g. valves, located proximate the outlet (B05C5/0258, B05C5/0275 take precedence; supply valves upstream the coating head B05C11/1036) · CPC title
characterised by structure, by material or by manufacturing of catalyst support · CPC title
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Frequently asked questions
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- What does patent US11759818B2 cover?
- The disclosure relates to a substrate coating apparatus that comprises a source of a washcoat; a washcoat showerhead for discharging the washcoat towards an upper surface of a substrate; a conduit fluidly connecting the source of the washcoat to the washcoat showerhead for supplying washcoat to the washcoat showerhead; a headset for engaging the substrate to locate the upper surface of the subs…
- Who is the assignee on this patent?
- Johnson Matthey Plc
- What technology area does this patent fall under?
- Primary CPC classification B01J37/0215. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 19 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).