US3119243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum device
Assignee: National Research Corp
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Filing: 1962-04-04
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Granted: 1964-01-28
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Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Milo P Hnilicka
- 👤 Jr John C Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:42
CPC Classifications
F; F04; F04F; F04F9/00; Y; Y10; Y10S; Y10S55/00; Y10S55/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
AN ULTRA HIGH VACUUM FACILITY COMPRISING A FIRST WALL DEFINING AN INNER CHAMBER TO BE MAINTAINED AT A PRESSURE BELOW ABOUT 10**-10 TORR, FIRST REFRIGERATING MEANS FOR MAINTAINING A MAJORITY OF SAID FIRST WALL AT A TEMPERATURE BELOW ABOUT 20* K., A SECOND WALL OUTSIDE OF SAID FIRST WALL FOR DEFINING AN INTERMEDIATE CHAMBER SPACED FROM SAID INNER CHAMBER, SAID INTERMEDIATE CHAMBER BEING ISOLATED FROM THE ATMOSPHERE BY AT LEAST TWO SEALED WALLS THROUGHOUT ITS WHOLE EXTENT FOR PUMPING PORTS, A SECOND REFRIGERATING MEANS FOR MAINTAINING A MAJORITY OF SAID SECOND WALL AT A TEMPERATURE BELOW ABOUT 100* K., MEANS POSITIONED ADJACENT ONE END OF SAID INNER CHAMBER FOR EVACUATING GASES FROM SAID INTERMEDIATE CHAMBER TO MAINTAIN SAID INTERMEDIATE CHAMBER AT A PRESSURE ON THE ORDER OF 10**-10 TORR, SAID INNER CHAMBER BEING IN COMMUNICATION WITH THE INTERMEDIATE CHAMBER AT THE OPPOSITE END OF SAID INNER CHAMBER, A THIRD WALL OUTSIDE OF SAID SECOND WALL AND DEFINING AN OUTER CHAMBER SPACED FROM SAID INTERMEDIATE CHAMBER AND MEANS FOR EVACUATING GASES FROM SAID OUTER CHAMBER.
Claim 2
Dependent Claim
174 words
AN ULTRA HIGH VACUUM FACILITY COMPRISING A FIRST WALL DEFINING AN INNER CHAMBER TO BE MAINTAINED AT A PRESSURE BELOW ABOUT 10**-10 TORR, FIRST REFRIGERATING MEANS FOR MAINTAINING A MAJORITY OF SAID FIRST WALL AT A TEMPERATURE BELOW ABOUT 20* K., A SECOND WALL OUTSIDE OF SAID FIRST WALL FOR DEFINING AN INTERMEDIATE CHAMBER SPACED FROM SAID INNER CHAMBER, SAID INTERMEDIATE CHAMBER BEING ISOLATED FROM THE ATMOSPHERE BY AT LEAST TWO SEALED WALLS THROUGHOUT ITS WHOLE EXTENT FOR PUMPING PORTS, A SECOND REFRIGERATING MEANS FOR MAINTAINING A MAJORITY OF SAID SECOND WALL AT A TEMPERATURE BELOW ABOUT 100* K., MEANS POSITIONED ADJACENT ONE END OF SAID INNER CHAMBER FOR EVACUATING GASES FROM SAID INTERMEDIATE CHAMBER TO MAINTAIN SAID INTERMEDIATE CHAMBER AT A PRESSURE ON THE ORDER OF 10**-10 TORR, SAID INNER CHAMBER BEING IN COMMUNICATION WITH THE INTERMEDIATE CHAMBER AT THE OPPOSITE END OF SAID INNER CHAMBER, A THIRD WALL OUTSIDE OF SAID SECOND WALL AND DEFINING AN OUTER CHAMBER SPACED FROM SAID INTERMEDIATE CHAMBER AND MEANS FOR EVACUATING GASES FROM SAID OUTER CHAMBER.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |