Patent US3780791A successfully refreshed from Google Patents.
US3780791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal regenerators
Assignee: Individual
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Filing: 1971-12-02
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Granted: 1973-12-25
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Expires: 1991-12-02
Abstract
Abstract In a thermal regenerator for a gas turbine a matrix is rotatably mounted in a housing. To segregate high and low pressure gas flows through the matrix a sealing assembly is provided in which a pad seal is urged into contact with the matrix and the space between seal and housing is closed by an elastomeric curtain.
Inventors
- 👤 M Barnard
- 👤 L Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:50
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/08; F02C7/10; F02C7/105; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/3456; F28; F28D; F28D19/00; F28D19/04; F28D19/047; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10S165/02; Y10S165/021
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
210 words
In a thermal regenerator of the kind having a rotary disctype matrix mounted within, and adapted for rotation relative to, a casing; which matrix is adapted to be traversed by at least two segregated flows of gaseous heat exchange fluid; the regenerator being provided with a sealing assembly to segregate said flows said sealing assembly comprising in combination: a. a counterface pad seal adapted to make rubbing contact with a face of the matrix; b. a supporting ring on which said pad seal is mounted disposed between casing and matrix; c. supporting ring locating means mounted on the casing and extending towards the matrix; the locating means enabling the supporting ring to move towards and away from the matrix; while limiting movement of the supporting ring due to torque applied frictionally to the pad seal by rotation of the matrix; d. a flexible sealing curtain of elastomeric material secured to the supporting ring and extending across a gap defined between the supporting ring and the casing, the curtain serving to define a high pressure fluid side and a low pressure fluid side of the sealing assembly; e. curtain stiffening means secured to the casing or the supporting ring and adapted to enable the curtain to slide on said stiffening means.
Claim 2
Dependent Claim
210 words
In a thermal regenerator of the kind having a rotary disctype matrix mounted within, and adapted for rotation relative to, a casing; which matrix is adapted to be traversed by at least two segregated flows of gaseous heat exchange fluid; the regenerator being provided with a sealing assembly to segregate said flows said sealing assembly comprising in combination: a. a counterface pad seal adapted to make rubbing contact with a face of the matrix; b. a supporting ring on which said pad seal is mounted disposed between casing and matrix; c. supporting ring locating means mounted on the casing and extending towards the matrix; the locating means enabling the supporting ring to move towards and away from the matrix; while limiting movement of the supporting ring due to torque applied frictionally to the pad seal by rotation of the matrix; d. a flexible sealing curtain of elastomeric material secured to the supporting ring and extending across a gap defined between the supporting ring and the casing, the curtain serving to define a high pressure fluid side and a low pressure fluid side of the sealing assembly; e. curtain stiffening means secured to the casing or the supporting ring and adapted to enable the curtain to slide on said stiffening means.
Claim 3
Dependent Claim
28 words
The thermal regenerator of claim 1 characterised by the provision of limit stop means on the casing to limit movement of the supporting ring away from the matrix.
Claim 4
Dependent Claim
45 words
The thermal regenerator of claim 1 characterised in that the sealing curtain defines a fold extending parallel to the face of the matrix and the curtain stiffening means includes a ring member adapted to engage said fold and for sliding movement on said stiffening means.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |