US3124744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ionization gauge altim
Assignee: —
•
Filing: 1957-10-30
•
Granted: 1964-03-10
•
Expires: 1977-10-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:25
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/64; G01N27/66; H; H01; H01J; H01J41/00; H01J41/02; H01J41/06; H01J41/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A WIDE RANGE ALTIMETER INCLUDING A COLD CATHODE IONIZATION GAUGE SUBJECT TO CHANGES IN AIR DENSITY AND COMPRISING ANODE AND CATHODE ELEMENTS OPPOSING ONE ANOTHER AND PROVIDING A SAMPLING ZONE THEREBETWEEN, AND A SOURCE OF IONIZING MATERIAL UNIFORMLY DISTRIBUTED ON ONE OF THE ELEMENTS TO IONIZE THE SAMPLING ZONE SUBSTANTIALLY UNIFORMLY, A SOURCE OF POTENTIAL FOR ENERGIZING SAID GUAGE, AND CIRCUIT MEANS CONNECTED TO SAID IONIZATION GAUGE AND COOPERATING WITH THE GAUGE TO PROVIDE AN OUTPUT WHEN THE AIR DENSITY CHANGES, AND MEANS RESPONSIVE TO THE OUTPUT AND COOPERATING WITH SAID CIRCUIT MEANS FOR RESTORING EQUILIBRIUM BETWEEN SAID CIRCUIT MEANS AND SAID IONIZATION GAUGE TO NULL THE OUTPUT.
Claim 2
Dependent Claim
108 words
A WIDE RANGE ALTIMETER INCLUDING A COLD CATHODE IONIZATION GAUGE SUBJECT TO CHANGES IN AIR DENSITY AND COMPRISING ANODE AND CATHODE ELEMENTS OPPOSING ONE ANOTHER AND PROVIDING A SAMPLING ZONE THEREBETWEEN, AND A SOURCE OF IONIZING MATERIAL UNIFORMLY DISTRIBUTED ON ONE OF THE ELEMENTS TO IONIZE THE SAMPLING ZONE SUBSTANTIALLY UNIFORMLY, A SOURCE OF POTENTIAL FOR ENERGIZING SAID GUAGE, AND CIRCUIT MEANS CONNECTED TO SAID IONIZATION GAUGE AND COOPERATING WITH THE GAUGE TO PROVIDE AN OUTPUT WHEN THE AIR DENSITY CHANGES, AND MEANS RESPONSIVE TO THE OUTPUT AND COOPERATING WITH SAID CIRCUIT MEANS FOR RESTORING EQUILIBRIUM BETWEEN SAID CIRCUIT MEANS AND SAID IONIZATION GAUGE TO NULL THE OUTPUT.
References Cited (Backward Citations)
GB398722A
Cited
US2395623A
Cited
US2497213A
Cited
US2629837A
Cited
US2627543A
Cited
US2709229A
Cited
US2761976A
Cited
US2750560A
Cited
US2797385A
Cited
US2908819A
Cited
US2795716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |