US2993784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminium alloys
Assignee: Individual
•
Filing: 1959-04-27
•
Granted: 1961-07-25
•
Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Huddle Roy Alfred Ulfketel
- 👤 Wilkins Nigel John Murray
- 👤 Britton Colin Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:47
CPC Classifications
C; C22; C22C; C22C21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A CURRENT LEAD-IN DEVICE FOR ELECTRIC GLOW DISCHARGE CHAMBERS COMPRISING TWO ELECTRODES ARRANGED ON WITHIN THE OTHER AND SPACED FROM EACH OTHER, AT LEAST ONE OF THE ELECTRODES BEING ADAPTED FOR CONNECTION TO A SOURCE OF ELECTRIC POTENTIAL, AN INSULATOR BETWEEN THE ELECTRODES, ONE OF THE ELECTRODES BEING ADJUSTABLE IN AT LEAST ONE OF THE AXIAL AND RADIAL DIRECTIONS WITH RESPECT TO THE OTHER ELECTRODE, SAID ELECTRODES FORMING A GAP BETWEEN THEM WHICH IS DISPOSED IN ADVANCE OF THE INSULATOR VIEWED FROM THE INTERIOR OF THE CHAMBER, SAID ADJUSTABLE ELECTRODE BEING MOVABLE TO MAKE THE WIDTH OF THE GAP THE SAME THROUGHOUT ITS WHOLE EXTENT.
Claim 2
Dependent Claim
105 words
A CURRENT LEAD-IN DEVICE FOR ELECTRIC GLOW DISCHARGE CHAMBERS COMPRISING TWO ELECTRODES ARRANGED ON WITHIN THE OTHER AND SPACED FROM EACH OTHER, AT LEAST ONE OF THE ELECTRODES BEING ADAPTED FOR CONNECTION TO A SOURCE OF ELECTRIC POTENTIAL, AN INSULATOR BETWEEN THE ELECTRODES, ONE OF THE ELECTRODES BEING ADJUSTABLE IN AT LEAST ONE OF THE AXIAL AND RADIAL DIRECTIONS WITH RESPECT TO THE OTHER ELECTRODE, SAID ELECTRODES FORMING A GAP BETWEEN THEM WHICH IS DISPOSED IN ADVANCE OF THE INSULATOR VIEWED FROM THE INTERIOR OF THE CHAMBER, SAID ADJUSTABLE ELECTRODE BEING MOVABLE TO MAKE THE WIDTH OF THE GAP THE SAME THROUGHOUT ITS WHOLE EXTENT.
References Cited (Backward Citations)
CA529289A
Cited
US2823995A
Cited
US1579481A
Cited
US1704252A
Cited
US1912382A
Cited
US1941230A
Cited
GB558023A
Cited
US2826518A
Cited
US2826519A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |