Patent US4793136A successfully refreshed from Google Patents.
US4793136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced metallic honeycomb structure
Assignee: BASF Catalysts LLC
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Filing: 1987-08-26
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Granted: 1988-12-27
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Expires: 2007-08-26
Abstract
Abstract There is provided a fluid conduit comprising a housing, at least a pair of accordion folded corrugated thin metal elements disposed in the housing, and at least one longitudinally extending metal strut for reinforcing the core members against twisting and consequent axial displacement.
Inventors
- 👤 William A. Whittenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:37
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/9445; B01D53/9454; F01N13/00; F01N13/011; F01N13/017; F01N3/28; F01N3/2803; F01N3/2807; F01N3/281; F01N3/2814; F01N3/2839; F01N3/2842; F01N2260/00; F01N2260/18; F01N2330/00; F01N2330/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
205 words
A fluid conduit comprising (a) a housing, (b) at least a pair of corrugated thin metal elements disposed in said housing, and (c) at least one longitudinally extending metal strut dividing said housing into segments, said housing having at each end thereof retaining means for engaging the ends of said corrugated thin metal elements and said strut, and retaining said elements and strut against against axial movement, each of said corrugated elements filling a segment of the cross-section of said housing and each of said elements comprising a plurality of accordion folded nonnesting corrugated thin metal portions and defining longitudinally extending fold lines adapted to conform to the internal geometric configuration of said housing in the segment of the housing filled thereby and to lie along the sides of said housing, said at least one metal strut lying between a pair of said corrugated metal portions and defining a segment of said housing cross-section filled by one of said corrugated thin metal elements, and opposing longitudinal marginal edges of said strut lying adjacent the sides of said housing, the assembly of accordion folded corrugated thin metal portions and said intermediate strut filling the entire cross-section of the housing to form a honeycomb fluid permeable structure.
Claim 2
Dependent Claim
205 words
A fluid conduit comprising (a) a housing, (b) at least a pair of corrugated thin metal elements disposed in said housing, and (c) at least one longitudinally extending metal strut dividing said housing into segments, said housing having at each end thereof retaining means for engaging the ends of said corrugated thin metal elements and said strut, and retaining said elements and strut against against axial movement, each of said corrugated elements filling a segment of the cross-section of said housing and each of said elements comprising a plurality of accordion folded nonnesting corrugated thin metal portions and defining longitudinally extending fold lines adapted to conform to the internal geometric configuration of said housing in the segment of the housing filled thereby and to lie along the sides of said housing, said at least one metal strut lying between a pair of said corrugated metal portions and defining a segment of said housing cross-section filled by one of said corrugated thin metal elements, and opposing longitudinal marginal edges of said strut lying adjacent the sides of said housing, the assembly of accordion folded corrugated thin metal portions and said intermediate strut filling the entire cross-section of the housing to form a honeycomb fluid permeable structure.
Claim 3
Dependent Claim
17 words
A fluid conduit in accordance with claim 1 in which the retaining means has an L-shaped cross-section.
Claim 4
Dependent Claim
17 words
A fluid conduit in accordance with claim 1 in which the retaining means has a rectangular cross-section.
Claim 5
Dependent Claim
17 words
A fluid conduit in accordance with claim 1 in which the retaining means has a square cross-section.
Claim 6
Dependent Claim
25 words
A fluid conduit as defined in claim 1 wherein the surfaces of the corrugated thin metal portions are provided with a coating including aluminum oxide.
Claim 7
Dependent Claim
26 words
A fluid conduct as defined in claim 5 wherein the coating also includes a catalyst for chemically and/or physically converting pollutant materials to environmentally acceptable materials.
Claim 8
Dependent Claim
17 words
A fluid conduit in accordance with claim 1 in which the housing is formed of stainless steel.
Claim 9
Dependent Claim
19 words
A fluid conduit in accordance with claim 1 in which the corrugated thin metal is corrugated thin stainless steel.
Claim 10
Dependent Claim
16 words
A fluid conduit in accordance with claim 1 in which the housing is of circular cross-section.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-27 | 1992-06-27 | 1992-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-27 | 1996-06-27 | 1996-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-27 | 2000-06-27 | 2000-12-27 | $7700.00 | Window Closed / Lapsed |