Patent US3958626A successfully refreshed from Google Patents.
US3958626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerator matrix structure
Assignee: Motors Liquidation Co
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Filing: 1975-02-21
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Granted: 1976-05-25
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Expires: 1995-02-21
Abstract
Abstract A matrix structure for a rotary regenerator includes a pair of spiral wound strips with each turn of one strip disposed between adjacent turns of the other strip with the strips abutting face to face and fixed together, as by brazing, into a rigid, elastic structure, the one strip being formed with corrugations trending generally axially of the matrix and with substantial depth radially of the matrix to separate radially the turns of the other strip and to define fluid flow passages through the corrugations, the corrugations including a repeatable pattern of a first plurality of corrugations having equally curved ridges and hollows of a predetermined amplitude and a second set of corrugations including at least one ridge and one hollow of a reduced amplitude as compared to the amplitude of the first plurality of corrugations.
Inventors
- 👤 Lee F. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:18
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/041; F28D19/042; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10T; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12236; Y10T428/12243; Y10T428/12333; Y10T428/1241; Y10T428/12479
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
153 words
A rotary regenerator matrix structure of annular form porous to flow of fluid generally parallel to the axis of the matrix, said matrix structure comprising first and second spiral wound strips with each turn of the first strip disposed between adjacent turns of the second strip and with said strips abutting face-to-face and fixed together into a rigid, elastic structure, said first strip having corrugations trending generally of the matrix, said corrugations including a repeatable series of a plurality of first corrugations each uniformly of substantial depth radially of the matrix and at least a second corrugation of reduced radial depth as compared to said first corrugations, said first corrugations of said first strip abutting at their radially extreme portions against adjacent turns of said second strip and being fixed thereto, the second corrugation being unsecured to the second strip to permit free spiral movement between the second corrugation and the second strip.
Claim 2
Dependent Claim
153 words
A rotary regenerator matrix structure of annular form porous to flow of fluid generally parallel to the axis of the matrix, said matrix structure comprising first and second spiral wound strips with each turn of the first strip disposed between adjacent turns of the second strip and with said strips abutting face-to-face and fixed together into a rigid, elastic structure, said first strip having corrugations trending generally of the matrix, said corrugations including a repeatable series of a plurality of first corrugations each uniformly of substantial depth radially of the matrix and at least a second corrugation of reduced radial depth as compared to said first corrugations, said first corrugations of said first strip abutting at their radially extreme portions against adjacent turns of said second strip and being fixed thereto, the second corrugation being unsecured to the second strip to permit free spiral movement between the second corrugation and the second strip.
Claim 3
Dependent Claim
116 words
In a rotary regenerator matrix structure of annular form porous to flow of fluid generally parallel to the axis of the matrix, the matrix structure comprising first and second spiral wound strips with each turn of the first strip disposed between adjacent turns of the second strip and with the strips abutting face-to-face and fixed together into a rigid elastic structure, the first strip being formed with corrugations trending generally axially of the matrix and with substantial depth radially of the matrix to separate radially the turns of the second strip, the improvement wherein selected spaced apart corrugations of said first strip are of reduced amplitude as compared to the remaining corrugations of said first strip.
Claim 4
Dependent Claim
116 words
In a rotary regenerator matrix structure of annular form porous to flow of fluid generally parallel to the axis of the matrix, the matrix structure comprising first and second spiral wound strips with each turn of the first strip disposed between adjacent turns of the second strip and with the strips abutting face-to-face and fixed together into a rigid elastic structure, the first strip being formed with corrugations trending generally axially of the matrix and with substantial depth radially of the matrix to separate radially the turns of the second strip, the improvement wherein selected spaced apart corrugations of said first strip are of reduced amplitude as compared to the remaining corrugations of said first strip.
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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |