Patent US3616007A successfully refreshed from Google Patents.
Patent US3882927A successfully refreshed from Google Patents.
US3882927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for rotary regenerative heat exchanger
Assignee: Individual
•
Filing: 1973-03-27
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Granted: 1975-05-13
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Expires: 1993-03-27
Abstract
Abstract A seal for engagement with an end face of the matrix of a rotary regenerative heat exchanger is formed from a plurality of blocks arranged end-to-end in a guide housing, adjacent end faces of the blocks being shaped to form a joint permitting articulation of adjacent blocks about a pivotal axis extending transversely of the blocks and parallel with the plane of the end face of the matrix, the blocks being of sufficiently short length and sufficient in number to permit the seal to conform to the surface profile of the end face of the matrix.
Inventors
- 👤 Robert Noel Penny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:40
CPC Classifications
F; 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: 7
Claim 1
Independent Claim
190 words
A rotary regenerative heat exchanger having a disk-like rotatable matrix and including a pair of seals of which one engages one end face of the matrix and the other engages the other end face of the matrix, at least a portion of one of the seals being formed from a plurality of blocks of which some are made of one material and at least some of the remaining blocks are made of another material having a different coefficient of linear expansion, said blocks arranged end-to-end in a guide housing, adjacent end faces of the blocks being shaped to form a joint permitting articulation of adjacent blocks about a pivotal axis extending transversely of the blocks and parallel with the plane of the end face of the matrix, the blocks being of sufficiently short length and sufficient in number to permit said portion of the seal to conform to the surface profile of the end face of the matrix, and the materials and the lengths of the respective blocks being such that the effective coefficient of linear expansion of the seal is substantially the same as that of the guide housing.
Claim 2
Dependent Claim
190 words
A rotary regenerative heat exchanger having a disk-like rotatable matrix and including a pair of seals of which one engages one end face of the matrix and the other engages the other end face of the matrix, at least a portion of one of the seals being formed from a plurality of blocks of which some are made of one material and at least some of the remaining blocks are made of another material having a different coefficient of linear expansion, said blocks arranged end-to-end in a guide housing, adjacent end faces of the blocks being shaped to form a joint permitting articulation of adjacent blocks about a pivotal axis extending transversely of the blocks and parallel with the plane of the end face of the matrix, the blocks being of sufficiently short length and sufficient in number to permit said portion of the seal to conform to the surface profile of the end face of the matrix, and the materials and the lengths of the respective blocks being such that the effective coefficient of linear expansion of the seal is substantially the same as that of the guide housing.
Claim 3
Dependent Claim
43 words
A rotary regenerative heat exchanger as claimed in claim 1 in which one of the end faces of a pair of adjacent blocks is of cylindrical convex shape and the adjacent end face of the co-operating block is of complementary cylindrical concave shape.
Claim 4
Dependent Claim
44 words
A rotary regenerative heat exchanger as claimed in claim 1 in which each pair of adjacent blocks have end faces formed respectively with a groove and an interfitting tongue, and a hinge pin extends through the tongue into the adjacent walls of the groove.
Claim 5
Dependent Claim
47 words
A rotary regenerative heat exchanger as claimed in claim 1 in which the blocks are arranged to be urged outwardly of the guide housing by fluid pressure acting directly on the blocks to urge them into sealing engagement with the end face of the heat exchanger matrix.
Claim 6
Dependent Claim
44 words
A rotary regenerative heat exchanger as claimed in claim 1 including spring means by which the blocks are urged outwardly of the guide housing, said spring means acting between the guide housing and the end faces of the blocks opposite the seal faces thereof.
Claim 7
Dependent Claim
49 words
A rotary Regenerative heat exchanger as claimed in claim 1 in which at least one of the blocks is formed of two parts arranged to be pushed apart, thereby to increase the length of the seal, when the block is urged into sealing engagement with the matrix end face.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |