US5098763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Honeycomb structure
Assignee: NGK Insulators Ltd
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Filing: 1989-07-25
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Granted: 1992-03-24
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Expires: 2009-07-25
Abstract
Abstract A honeycomb structure as a substrate for a catalyst includes at least one ridge arranged on at least one part of an outer surface of the honeycomb structure and extending in a direction of through-apertures thereof, and at least one notch formed in the at least one ridge. A method of producing the honeycomb structure includes the steps of extruding a ceramic batch to form a honeycomb structure having a ridge in the form of a shape extending at least at one part of the honeycomb structure in cross-section, and removing at least one part of the ridge in directions of through-apertures of the honeycomb structure to form a notch. With the arrangement of the honeycomb structure, it is possible to prevent any shifting of the honeycomb structure in directions of through-apertures of the structure and rotation of the structure about its axis relative to a converter can without closing any ends of through-apertures.
Inventors
- 👤 Osamu Horikawa
- 👤 Koichi Ikeshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:11
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2853; B; B28; B28B; B28B11/00; B28B11/08; B28B11/10; B28B11/12; C; C04; C04B; C04B38/00; C04B38/0006; F01N3/2803; F01N3/2825; F01N3/2828; F01N3/2867; F01N2330/00; F01N2330/06; F01N2350/00; F01N2350/02; F01N2450/00; F01N2450/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24744
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
55 words
A honeycomb structure comprising at least one ridge arranged on at least one part of an outer surface of said honeycomb structure and extending in a direction of through-apertures of said honeycomb structure, and at least one notch formed in said at least one ridge in a direction substantially perpendicular to said direction of through-apertures.
Claim 2
Dependent Claim
55 words
A honeycomb structure comprising at least one ridge arranged on at least one part of an outer surface of said honeycomb structure and extending in a direction of through-apertures of said honeycomb structure, and at least one notch formed in said at least one ridge in a direction substantially perpendicular to said direction of through-apertures.
Claim 3
Dependent Claim
29 words
A honeycomb structure as set forth in claim 1, wherein said notch is formed through said at least one ridge flush with said outer surface of said honeycomb structure.
Claim 4
Dependent Claim
44 words
A honeycomb structure as set forth in claim 1, wherein said at least one ridge comprises a plurality of ridges formed around an entirety of said outer surface of said honeycomb structure and said at least one notch extends over a few adjacent ridges.
Claim 5
Dependent Claim
22 words
A honeycomb structure as set forth inlaim 1, wherein said at least one notch consists of a plurality of adjacent, spaced grooves.
Claim 6
Dependent Claim
22 words
A honeycomb structure as set forth inlaim 1, wherein said at least one notch consists of a plurality of adjacent, spaced grooves.
Claim 7
Dependent Claim
29 words
A honeycomb structure as set forth in claim 1, wherein said at least one ridge has edges which are smoothly connected to said outer surface of said honeycomb structure.
Claim 8
Dependent Claim
24 words
A honeycomb structure as set forth in claim 1, wherein two ridges are provided circumferentially spaced on said outer surface of said honeycomb structure.
Claim 9
Dependent Claim
47 words
A purification apparatus comprising: the honeycomb structure of claim 1 and a converter can in which said honeycomb structure is incorporated, said converter can comprising at least one projection which extends inwardly from the can and abuts against said at least one ridge of said honeycomb structure.
Claim 10
Dependent Claim
35 words
The apparatus of claim 7, further comprising a sealing member disposed between said honeycomb structure and said converter can, said sealing member encircling said honeycomb structure and being fitted into said at least one notch.
Claim 11
Dependent Claim
36 words
The apparatus of claim 8, wherein said converter can is diametrically divided into two halves, and each half is similar in shape and slightly larger than corresponding portions of said outer surface of said honeycomb structure.
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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) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |