US3082009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for the sealing of a rotatable shaft in passage through a casing
Assignee: United Kingdom Atomic Energy Authority
•
Filing: 1960-01-14
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Granted: 1963-03-19
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Expires: 1980-01-14
Abstract
No abstract record available.
Inventors
- 👤 Whitley Stanley
- 👤 Saughall Great
- 👤 Allen David Shaun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:35
CPC Classifications
F; F01; F01K; F01K7/00; F01K7/16; F01K7/22; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F16J15/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
127 words
A METHOD OF OPERATING A SEALING DEVICE FOR A SHAFT IN PASSAGE THROUGH A SLEEVE FLEXIBLY SEALED TO A CASING HAVING ATMOSPHERIC CONDITIONS OUTSIDE THE CASING AND A GAS AT A SUPER-ATMOSPHERIC PRESSURE INSIDE THE CASING TO BE KEPT FREE OF CONTACT WITH AIR, COMPRISING FEEDING PRESSURIZED AIR TO FIRST CIRCUMFERENTIAL ZONE BETWEEN THE SLEEVE AND THE SHAFT TO SUSTAIN AIR LUBRICATION AND SUPPORT BETWEEN THE SLEEVE AND THE SHAFT, THE AIR PASSING INWARDLY AND OUTWARDLY ALONG THE SLEEVE, WITHDRAWING GAS AT A SECOND CIRCUMFERENTIAL ZONE ON THE INWARD SIDE OF SAID FIRST ZONE, AND FEEDING A GAS COMPATIBLE WITH THE GAS INSIDE THE CASING AND AT A PRESSURE GREATER THAN SAID SUPER-ATMOSPHERIC PRESSURE TO A THIRD CIRCUMFERENTIAL ZONE ON THE INWARD SIDE OF SAID SECOND ZONE.
Claim 2
Independent Claim
127 words
A METHOD OF OPERATING A SEALING DEVICE FOR A SHAFT IN PASSAGE THROUGH A SLEEVE FLEXIBLY SEALED TO A CASING HAVING ATMOSPHERIC CONDITIONS OUTSIDE THE CASING AND A GAS AT A SUPER-ATMOSPHERIC PRESSURE INSIDE THE CASING TO BE KEPT FREE OF CONTACT WITH AIR, COMPRISING FEEDING PRESSURIZED AIR TO FIRST CIRCUMFERENTIAL ZONE BETWEEN THE SLEEVE AND THE SHAFT TO SUSTAIN AIR LUBRICATION AND SUPPORT BETWEEN THE SLEEVE AND THE SHAFT, THE AIR PASSING INWARDLY AND OUTWARDLY ALONG THE SLEEVE, WITHDRAWING GAS AT A SECOND CIRCUMFERENTIAL ZONE ON THE INWARD SIDE OF SAID FIRST ZONE, AND FEEDING A GAS COMPATIBLE WITH THE GAS INSIDE THE CASING AND AT A PRESSURE GREATER THAN SAID SUPER-ATMOSPHERIC PRESSURE TO A THIRD CIRCUMFERENTIAL ZONE ON THE INWARD SIDE OF SAID SECOND ZONE.
Claim 3
Independent Claim
130 words
A DEVICE FOR SEALING A ROTATABLE SHAFT IN PASSAGE THROUGH A CASING, COMPRISING A SLEEVE RESILIENTLY SEALED TO THE CASING AND DEFINING A BORE FOR THE SHAFT, THE SLEEVE HAVING A CIRCUMFERENTIAL RING OF ORIFICES FOR FEEDING PRESSURIZED GAS TO THE BORE TO SUSTAIN GAS LUBRICATION AND SUPPORT BETWEEN THE SLEEVE AND THE SHAFT, AND THE SLEEVE AND THE SHAFT DEFINING A SERIES OF ZONES IN AXIAL SEQUENCE FROM THE RING OF ORIFICES TOWARDS THE END OF THE SLEEVE IN COMMUNICATION WITH THE INSIDE OF THE CASING, NAMELY, A PRESSURE ADJUSTING ZONE PROVIDED BY A FIRST CIRCUMFERENTIAL GROOVE WITH A HOLE FOR VENTING GAS FROM SAID FIRST GROOVE, AND A SEALING GAS FEED ZONE PROVIDED BY A SECOND CIRCUMFERENTIAL GROOVE WITH MEANS FOR FEEDING SEALING GAS TO SAID SECOND GROOVE.
Claim 4
Independent Claim
130 words
A DEVICE FOR SEALING A ROTATABLE SHAFT IN PASSAGE THROUGH A CASING, COMPRISING A SLEEVE RESILIENTLY SEALED TO THE CASING AND DEFINING A BORE FOR THE SHAFT, THE SLEEVE HAVING A CIRCUMFERENTIAL RING OF ORIFICES FOR FEEDING PRESSURIZED GAS TO THE BORE TO SUSTAIN GAS LUBRICATION AND SUPPORT BETWEEN THE SLEEVE AND THE SHAFT, AND THE SLEEVE AND THE SHAFT DEFINING A SERIES OF ZONES IN AXIAL SEQUENCE FROM THE RING OF ORIFICES TOWARDS THE END OF THE SLEEVE IN COMMUNICATION WITH THE INSIDE OF THE CASING, NAMELY, A PRESSURE ADJUSTING ZONE PROVIDED BY A FIRST CIRCUMFERENTIAL GROOVE WITH A HOLE FOR VENTING GAS FROM SAID FIRST GROOVE, AND A SEALING GAS FEED ZONE PROVIDED BY A SECOND CIRCUMFERENTIAL GROOVE WITH MEANS FOR FEEDING SEALING GAS TO SAID SECOND GROOVE.
References Cited (Backward Citations)
US1867236A
Cited
GB652109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |