US2712097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High Vacuum Measuring Device
Assignee: Individual
•
Filing: —
•
Granted: 1955-06-28
•
Expires: 1972-06-28
Abstract
No abstract record available.
Inventors
- 👤 Auwaerter Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/02; H01J41/08; G; G01; G01L; G01L21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A HIGH VACUUM MEASURING DEVICE COMPRISING, AN ENVELOPE ENCLOSING A DISCHARGE SPACE IN WHICH THE VACUUM TO BE MEASURED PREVAILS, TO ELECTRODES IN SAID DISCHARGE SPACE FORMING THE POLE SHOES OF A MAGNET, A THIRD ELECTRODE DISPOSED BETWEEN SAID TWO POLE SHOE ELECTRODES, SAID MAGNET AND THREE ELECTRODES BEING MOUNTED ROTATION-SYMMETRICALLY WITH RESPECT TO THE AXIS CONNECTING THE POLE SHOES, SAID THIRD ELECTRODE AND MAGNET BEING ELECTRICALLY INSULATED WITH RESPECT TO EACH OTHER, AND A SOURCE OF ELECTRIC POTENTIAL IN CIRCUIT WITH SAID ELECTRODES, SAID POTENTIAL SOURCE ADAPTED TO PRODUCE A GLOW DISCHARGE AT SAID ELECTRODES WHERBY THE CURRENT FLOWING IN SAID CIRCUIT SERVES AS A MEASURE OF THE VACUUM PREVAILING IN SAID DISCHARGE SPACE.
Claim 2
Dependent Claim
115 words
A HIGH VACUUM MEASURING DEVICE COMPRISING, AN ENVELOPE ENCLOSING A DISCHARGE SPACE IN WHICH THE VACUUM TO BE MEASURED PREVAILS, TO ELECTRODES IN SAID DISCHARGE SPACE FORMING THE POLE SHOES OF A MAGNET, A THIRD ELECTRODE DISPOSED BETWEEN SAID TWO POLE SHOE ELECTRODES, SAID MAGNET AND THREE ELECTRODES BEING MOUNTED ROTATION-SYMMETRICALLY WITH RESPECT TO THE AXIS CONNECTING THE POLE SHOES, SAID THIRD ELECTRODE AND MAGNET BEING ELECTRICALLY INSULATED WITH RESPECT TO EACH OTHER, AND A SOURCE OF ELECTRIC POTENTIAL IN CIRCUIT WITH SAID ELECTRODES, SAID POTENTIAL SOURCE ADAPTED TO PRODUCE A GLOW DISCHARGE AT SAID ELECTRODES WHERBY THE CURRENT FLOWING IN SAID CIRCUIT SERVES AS A MEASURE OF THE VACUUM PREVAILING IN SAID DISCHARGE SPACE.
References Cited (Backward Citations)
US1298490A
Cited
GB147856A
Cited
GB245755A
Cited
US2217187A
Cited
US2135006A
Cited
US2304412A
Cited
US2352657A
Cited
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Cited
US2516704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |