Coating tool

Patent metadata

Field	Value
Publication number	US-9919302-B2
Application number	US-201515124839-A
Country	US
Kind code	B2
Filing date	Mar 23, 2015
Priority date	Mar 20, 2014
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

This application concerns a tool for coating a monolithic shaped catalyst. The tool is part of a coating station and serves to hold and fix the monolith while coating is progressing.

First claim

The invention claimed is:

1. A coating tool comprising:
a first means for reversibly holding and fixing a catalyst monolith to be coated with a washcoat;
a second means to control an inflow of the washcoat into the monolith;
the second means being attached to the first means such that during the coating process the second means comes into contact with the washcoat before the washcoat reaches the monolith;
the second means having the form of a plate comprising holes having, when in use, an inlet side towards the washcoat and an outlet side towards the monolith, and channels providing a communication from the inlet side to the outlet side for the washcoat to flow through, wherein
at least some of the channels have a non-uniform channel width along an axis extending in the flow direction whereby the channel width is wider at both the inlet side and the outlet side as compared to a narrowed area between the inlet and outlet sides, and
for at least some of the channels, the narrowed area is aligned more closely to the outlet side than to the inlet side.

2. The tool according to claim 1 , wherein
the narrowed area forms a cylindrical surface at the inner periphery of the channel and is located within a half of the channel that is closer to the outlet side than to the inlet side.

3. The tool according to claim 1 , further comprising
a disk attached concentrically with the second means, the disk having a smaller diameter than the second means and comprising holes.

4. The tool according to claim 1 , wherein
at least one hole having a non-uniform channel width is configured to receive a sensor finger.

5. The tool according to claim 1 , wherein
the first means comprises an inflatable bellow configured to reversibly hold and fix the catalyst monolith via inflation and deflation of the bellow.

6. The tool according to claim 5 , wherein
the bellow is fixed to the first means by an air-tight engagement at an upper side and a lower side of the first means, and the bellow is open to a lateral side of the first means.

Assignees

• Umicore Ag & Co Kg

Inventors

• Masson Stéphane

Classifications

• B05B1/18

  Roses; Shower heads · CPC title

• B01J35/04

  Operations & Transport · mapped topic

• B05B1/34

  designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl (designed to control volume of flow B05B1/30) · CPC title

• B05D7/22

  to internal surfaces, e.g. of tubes · CPC title

• B05D2259/00

  Applying the material to the internal surface of hollow articles other than tubes · CPC title