US2023241596A1PendingUtilityA1

Apparatus and method for coating substrates with washcoats

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Assignee: JOHNSON MATTHEY PLCPriority: Dec 10, 2019Filed: Apr 6, 2023Published: Aug 3, 2023
Est. expiryDec 10, 2039(~13.4 yrs left)· nominal 20-yr term from priority
Inventors:Neil BurgessChristopher HaytonCraig Thomson
B01J 35/56B01J 37/0215B05C 5/02B05C 7/04B05D 1/26B05D 7/22B05D 3/0493B05D 2259/00F16J 15/061B05C 7/02B05C 5/002F01N 3/2803B05D 2203/30B05D 1/305F01N 3/022F01N 3/035F01N 2330/00F01N 2510/06Y02T10/12
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Claims

Abstract

A substrate coating apparatus is disclosed. A substrate coating apparatus 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 headset seal for engaging against the substrate. The headset seal comprises a perimetral portion that extends around the headset and a cantilevered portion that extends down from the perimetral portion and which is configured to engage against a sidewall of the substrate.

Claims

exact text as granted — not AI-modified
1 . A headset seal for engaging against a substrate, the headset seal comprising a perimetral portion for extending around a headset and a cantilevered portion that extends from the perimetral portion and which is configured for engaging against a sidewall of a substrate. 
     
     
         2 . The headset seal according to  claim 1 , wherein the cantilevered portion is arc-shaped. 
     
     
         3 . The headset seal according to  claim 1 , wherein the cantilevered portion subtends a central angle of between 45 and 120°. 
     
     
         4 . The headset seal according to  claim 1 , wherein the cantilevered portion subtends a central angle of between 45 and 90°. 
     
     
         5 . The headset seal according to  claim 1 , wherein the cantilevered portion subtends a central angle of between 65 and 75°. 
     
     
         6 . The headset seal according to  claim 1 , wherein the cantilevered portion has a depth, in a radial direction, of between 2.5 to 5.0 mm. 
     
     
         7 . The headset seal according to  claim 1 , wherein the perimetral portion and the cantilevered portion are formed unitarily. 
     
     
         8 . The headset seal according to  claim 1 , wherein the perimetral portion and the cantilevered portion are separate. 
     
     
         9 . The headset seal according to  claim 1 , wherein the perimetral portion and the cantilevered portion are formed of different materials. 
     
     
         10 . The headset seal according to  claim 1 , wherein the cantilevered portion has a shore hardness of between 35A and 45A.

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