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US3903341A Expired / Lapsed US ⏱️ 0.0 years remaining

Ceramic honeycomb structure for accommodating compression and tension forces

Assignee: Universal Oil Products Co
•
Filing: 1973-09-20
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Granted: 1975-09-02
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Expires: 1993-09-20
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Abstract

Abstract An improved ceramic honeycomb structure is provided by having a configuration with thin curved walls between the multiplicity of cells whereby both compression and tension forces can be better accommodated when the structure is being subjected to non-uniform temperature conditions. Two or more sets of opposing curved walls can be used to define each cell of the multiplicity thereof and the curvature for each set of walls is such as to permit elongative deformation in one direction without causing a reduced width cell or a closer spacing for juncture lines between adjacent cells in a direction transverse to the expansion movement.

Inventors

  • 👤 Clarence G Gerhold

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 12:35
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/9445; B01D53/9454; B01J; B01J35/00; B01J35/50; B01J35/56; B01J35/57; F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2803; F01N3/2825; F01N3/2828; F01N2330/00; F01N2330/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 225 words
A CERAMIC COMPOSITE WITH A MULTIPLICITY OF PARALLEL CELLS IN A HONEYCOMB TYPE OF STRUCTURE WHICH CAN DEFORM TO ACCOMMODATE COMPRESSION AND TENSILE FORCES FROM NON-UNIFORM TEMPERATURE CONDITIONS, WHICH COMPRISES, HAVING ALL INTERCONNECTING WALLS BETWEEN JUNCTURE LINES OF THE WALLS AND BETWEEN ADJACENT CELLS BEING CURVED AND ORIENTED ON TO ANOTHER IN A REOCCURING SYMMETRICAL PATTERN, EACH OF SAID PARALLEL CELLS BEING FORMED AND DEFINED BY TWO SETS OF OPPOSING CURVED WALLS, AND WITH ONE SET OF WALLS GENERALLY NORMAL TO THE OTHER IN THE OVERALL PATTERN AND AT THE JUNCTURES, SAID WALLS FOR ANY ONE CELL BEING SUCH THAT ONE SET OF OPPOSING WALLS WILL BOW TOWARDS ONE OTHER AND THE OTHER SET WILL BOW AWAY FROM ONE ANOTHER TO FORM A NECKED-IN AND DUMB-BELL FORM OF CROSS-SECTIONAL CONFIGURATION, AND ALL CELLS HAVING A COMMON WALL WITH AN ADJACENT CELL WILL BE OF THE SAME CONFIGURATION AS SUCH CELL EXCEPT THAT IT WILL BE IN AN ORIENTATION OF 90* WITH RESPECT THERETO, WHEREBY EXPANSION MOVEMENTS IN DIRECTIONS TRANSVERSE TO THE LENGTH OF THE LONGTUDINAL CELL THAT ARE DUE TO DIFFERENTIAL TEMPERATURE CONDITIONS CAN CAUSE DEFORMATION AND STRAIGHTENING OF ONE SET OF OPPOSING CURVED WALLS WITHOUT CAUSING JUNCTURE LINES BETWEEN CELLS TO TEND TO MOVE CLOSER TOGETHER IN A DIRECTION GENERALLY TRANSVERSE TO THE WALLS BEING STRAIGHTENED AND TO THEREBY PROVIDE A LESS FRAGILE STRUCTURE.
Claim 2
Dependent Claim 225 words
A CERAMIC COMPOSITE WITH A MULTIPLICITY OF PARALLEL CELLS IN A HONEYCOMB TYPE OF STRUCTURE WHICH CAN DEFORM TO ACCOMMODATE COMPRESSION AND TENSILE FORCES FROM NON-UNIFORM TEMPERATURE CONDITIONS, WHICH COMPRISES, HAVING ALL INTERCONNECTING WALLS BETWEEN JUNCTURE LINES OF THE WALLS AND BETWEEN ADJACENT CELLS BEING CURVED AND ORIENTED ON TO ANOTHER IN A REOCCURING SYMMETRICAL PATTERN, EACH OF SAID PARALLEL CELLS BEING FORMED AND DEFINED BY TWO SETS OF OPPOSING CURVED WALLS, AND WITH ONE SET OF WALLS GENERALLY NORMAL TO THE OTHER IN THE OVERALL PATTERN AND AT THE JUNCTURES, SAID WALLS FOR ANY ONE CELL BEING SUCH THAT ONE SET OF OPPOSING WALLS WILL BOW TOWARDS ONE OTHER AND THE OTHER SET WILL BOW AWAY FROM ONE ANOTHER TO FORM A NECKED-IN AND DUMB-BELL FORM OF CROSS-SECTIONAL CONFIGURATION, AND ALL CELLS HAVING A COMMON WALL WITH AN ADJACENT CELL WILL BE OF THE SAME CONFIGURATION AS SUCH CELL EXCEPT THAT IT WILL BE IN AN ORIENTATION OF 90* WITH RESPECT THERETO, WHEREBY EXPANSION MOVEMENTS IN DIRECTIONS TRANSVERSE TO THE LENGTH OF THE LONGTUDINAL CELL THAT ARE DUE TO DIFFERENTIAL TEMPERATURE CONDITIONS CAN CAUSE DEFORMATION AND STRAIGHTENING OF ONE SET OF OPPOSING CURVED WALLS WITHOUT CAUSING JUNCTURE LINES BETWEEN CELLS TO TEND TO MOVE CLOSER TOGETHER IN A DIRECTION GENERALLY TRANSVERSE TO THE WALLS BEING STRAIGHTENED AND TO THEREBY PROVIDE A LESS FRAGILE STRUCTURE.
Claim 3
Dependent Claim 31 words
The ceramic composite structure claim 1 further characterized in that said structure is provided with an active oxidizing catalyst coating material suitable to provide for the conversion of a noxious-gaseous stream.
Claim 4
Dependent Claim 180 words
A ceramic composite with a multiplicity of parallel cells in a honeycomb type of structure which can deform to accommodate compression and tensile forces from non-uniform temperature conditions, which comprises, having all interconnecting walls between juncture lines of the walls and between adjacent cells being curved and oriented one to another in a reoccurring symmetrical pattern, each of said parallel cells being formed and defined by three sets of opposing curved walls, with each set of walls being at approximately 120* with respect to the next adjacent set of walls to define any one cell, with next adjacent walls around an individual cell alternately bowing inwardly and outwardly, opposing curved partitioning walls between adjacent cells in any one row thereof are bowed in the same direction, and each cell in any given row of cells has the same cross-sectional configuration as the other cells and is in the same orientation, whereby to readily provide tension and deformation along any one of three axis without causing any substantial reduced spacing between juncture lines along either of the other 120* transverse axes.
Claim 5
Dependent Claim 180 words
A ceramic composite with a multiplicity of parallel cells in a honeycomb type of structure which can deform to accommodate compression and tensile forces from non-uniform temperature conditions, which comprises, having all interconnecting walls between juncture lines of the walls and between adjacent cells being curved and oriented one to another in a reoccurring symmetrical pattern, each of said parallel cells being formed and defined by three sets of opposing curved walls, with each set of walls being at approximately 120* with respect to the next adjacent set of walls to define any one cell, with next adjacent walls around an individual cell alternately bowing inwardly and outwardly, opposing curved partitioning walls between adjacent cells in any one row thereof are bowed in the same direction, and each cell in any given row of cells has the same cross-sectional configuration as the other cells and is in the same orientation, whereby to readily provide tension and deformation along any one of three axis without causing any substantial reduced spacing between juncture lines along either of the other 120* transverse axes.
Claim 6
Dependent Claim 33 words
The ceramic composite structure of claim 3 further characterized in that said structure is provided with an active oxidizing catalyst coating material suitable to provide for the conversion of a noxious gaseous stream.

References Cited (Backward Citations)

US2599268A Cited
US2848132A Cited
US3000088A Cited
US3444925A Cited
US3137602A Cited
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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) 1978-09-01 1979-03-03 1979-09-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-09-01 1983-03-03 1983-09-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-09-01 1987-03-03 1987-09-02 $7700.00 Window Closed / Lapsed

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