US3706482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure seal assembly
Assignee: TOSCOTECH CORP
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Filing: 1971-07-15
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Granted: 1972-12-19
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Expires: 1991-07-15
Abstract
Abstract A pressure seal assembly between a rotary retort and a stationary hydrocarbonaceous vapor and spent shale accumulator is provided which maintains seal rings in alignment or engagement with the shell of the rotary retort.
Inventors
- 👤 Richard H Crockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:15
CPC Classifications
F; F27; F27B; F27B7/00; F27B7/20; F27B7/22; F27B7/24; F16; F16J; F16J15/00; F16J15/54; Y; Y10; Y10S; Y10S277/00; Y10S277/903
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
A preSsure seal assembly comprising a rotary cylindrical shell having affixed thereon adjacent one of its ends a plurality of circumferentially equidistant stanchions supporting a concentric ring having two side surfaces and an inner surface, a cylindrical corrugated expansion bellows attached at one end to a circular flange on a stationary vessel wall and attached at the other end to a circular seal ring support disposed around said shell, said support having a plurality of biased inwardly mounted seal rings in sealing engagement with said shell and having a plurality of outwardly mounted circumferentially equidistant bearing rollers in rotary engagement with the inner surface of said concentric ring and having a plurality of outwardly mounted circumferentially equidistant opposed thrust rollers in rotary non-pivotal engagement with the two side surfaces of said concentric ring, whereby said seal rings are maintained in alignment or engagement with said shell.
Claim 2
Dependent Claim
146 words
A preSsure seal assembly comprising a rotary cylindrical shell having affixed thereon adjacent one of its ends a plurality of circumferentially equidistant stanchions supporting a concentric ring having two side surfaces and an inner surface, a cylindrical corrugated expansion bellows attached at one end to a circular flange on a stationary vessel wall and attached at the other end to a circular seal ring support disposed around said shell, said support having a plurality of biased inwardly mounted seal rings in sealing engagement with said shell and having a plurality of outwardly mounted circumferentially equidistant bearing rollers in rotary engagement with the inner surface of said concentric ring and having a plurality of outwardly mounted circumferentially equidistant opposed thrust rollers in rotary non-pivotal engagement with the two side surfaces of said concentric ring, whereby said seal rings are maintained in alignment or engagement with said shell.
Claim 3
Dependent Claim
27 words
The pressure seal assembly as defined by claim 1 wherein the bearing rollers and thrust rollers are mounted on the seal ring support by adjustable wedge plates.
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |