US3323788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for providing a vacuum-tight passageway
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1964-04-21
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Granted: 1967-06-06
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Expires: 1984-04-21
Abstract
No abstract record available.
Inventors
- 👤 Roudier Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:33
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/46; B; B23; B23K; B23K15/00; B23K15/06; B23K9/00; B23K9/16; B23K9/162; H; H01; H01J; H01J37/00; H01J37/02; H01J37/18; H05; H05H; H05H7/00; H05H7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
DEVICE FOR PROVIDING A VACUUM-TIGHT PASSAGEWAY THROUGH AN ENCLOSURE FOR THE INTRODUCTION THEREIN OF A WORKPIECE HAVING AN IRREGULAR SHAPE COMPRISING IN COMBINATION A STATIC SEAL CONSISTING OF A CYLINDRICAL CASING, A COAXIAL RIM IN SAID CASING FORMING AN ANNULAR SPACE AND PRESSURE CHAMBER, A CYLINDRICAL ELASTIC MEMBRANE SURROUNDING SAID WORKPIECE AND SECURED AT ITS EDGES BETWEEN SAID CASING AND SAID RIM, MEANS FOR CREATING A PRESSURE DIFFERENCE WITHIN SAID CHAMBER PROVIDING A VACUUM-TIGHT APPLICATION OF SAID MEMBRANE AGAINST SAID WORKPIECE OR AGAINST SAID RIM, A MECHANICAL SYSTEM COAXIAL WITH SAID RIM FOR LOCKING THE WORKPIECE RELATIVE TO SAID CASING, A DYNAMIC SEAL DISPOSED BETWEEN THE ENCLOSURE AND SAID CASING AND MEANS FOR DRIVING SAID CASING IN ROTATION ABOUT THE AXIS THEREOF.
Claim 2
Dependent Claim
122 words
DEVICE FOR PROVIDING A VACUUM-TIGHT PASSAGEWAY THROUGH AN ENCLOSURE FOR THE INTRODUCTION THEREIN OF A WORKPIECE HAVING AN IRREGULAR SHAPE COMPRISING IN COMBINATION A STATIC SEAL CONSISTING OF A CYLINDRICAL CASING, A COAXIAL RIM IN SAID CASING FORMING AN ANNULAR SPACE AND PRESSURE CHAMBER, A CYLINDRICAL ELASTIC MEMBRANE SURROUNDING SAID WORKPIECE AND SECURED AT ITS EDGES BETWEEN SAID CASING AND SAID RIM, MEANS FOR CREATING A PRESSURE DIFFERENCE WITHIN SAID CHAMBER PROVIDING A VACUUM-TIGHT APPLICATION OF SAID MEMBRANE AGAINST SAID WORKPIECE OR AGAINST SAID RIM, A MECHANICAL SYSTEM COAXIAL WITH SAID RIM FOR LOCKING THE WORKPIECE RELATIVE TO SAID CASING, A DYNAMIC SEAL DISPOSED BETWEEN THE ENCLOSURE AND SAID CASING AND MEANS FOR DRIVING SAID CASING IN ROTATION ABOUT THE AXIS THEREOF.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |