Apparatus and method for coating substrates with washcoats
US-2021170437-A1 · Jun 10, 2021 · US
Method of coating a substrate with a washcoat
US11654425B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11654425-B2 |
| Application number | US-202017247292-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 7, 2020 |
| Priority date | Dec 10, 2019 |
| Publication date | May 23, 2023 |
| Grant date | May 23, 2023 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A method of coating a substrate with a washcoat is disclosed. The method comprises engaging the substrate with a headset of a substrate coating apparatus so as to locate an upper surface of the substrate below a washcoat showerhead of the substrate coating apparatus; and discharging a washcoat out of the washcoat showerhead towards the upper surface of the substrate; and drawing the washcoat through the substrate by applying a suction force to a lower surface of the substrate.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of coating a substrate with a washcoat, wherein the method comprises the steps of: engaging the substrate with a headset of a substrate coating apparatus so as to locate an upper surface of the substrate below a washcoat showerhead of the substrate coating apparatus; discharging a washcoat out of the washcoat showerhead towards the upper surface of the substrate; drawing the washcoat through the substrate by applying a suction force to a lower surface of the substrate, wherein the step of engaging the substrate with the headset comprises engaging a headset seal of the headset with the substrate, the headset seal comprising a perimetral portion extending around the headset and a cantilevered portion extending down from the perimetral portion which engages against a sidewall of the substrate. 2. The method of claim 1 , wherein the cantilevered portion is arc-shaped. 3. The method of claim 1 , wherein the upper surface of the substrate comprises a shaping which extends to the sidewall of the substrate, thereby defining a gap in the sidewall, wherein the cantilevered portion bridges over the gap to hinder leakage of the washcoat out of the gap and down the sidewall of the substrate. 4. The method of claim 3 , wherein the shaping is a groove or cut-out. 5. The method of claim 1 , wherein on engaging the substrate with the headset, the cantilevered portion of the headset seal flexes in a substantially radial direction. 6. The method of claim 1 , wherein the cantilevered portion extends at an angle of between 0° and 15° with respect to a plane perpendicular to the perimetral portion. 7. The method of claim 1 , wherein the cantilevered portion extends at an angle of between 0° and 10° with respect to a plane perpendicular to the perimetral portion. 8. The method of claim 1 , wherein the cantilevered portion extends at an angle of about 3° with respect to a plane perpendicular to the perimetral portion.
Assignees
Inventors
Classifications
- B01J35/56Primary
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- What does patent US11654425B2 cover?
- A method of coating a substrate with a washcoat is disclosed. The method comprises engaging the substrate with a headset of a substrate coating apparatus so as to locate an upper surface of the substrate below a washcoat showerhead of the substrate coating apparatus; and discharging a washcoat out of the washcoat showerhead towards the upper surface of the substrate; and drawing the washcoat th…
- Who is the assignee on this patent?
- Johnson Matthey Plc
- What technology area does this patent fall under?
- Primary CPC classification B01J35/56. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 23 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).