US3213318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bimetallic filament positioning device
Assignee: General Electric Co
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Filing: 1962-10-19
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Granted: 1965-10-19
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Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
- 👤 Jr William E Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:29
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/42; H01J19/46; H01J2893/00; H01J2893/0001; H01J2893/0002; H01J2893/0005; H01J2893/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN AN ELECTRON DISCHARGE DEVICE, AN APPARATUS FOR POSITIONING THE FILAMENT THEREOF COMPRISING FIRST AND SECOND TERMINALS FOR SAID FILAMENT, A FIRST PAIR OF POSTS ELECTRICALLY CONDUCTIVE DISPOSED ON EITHER SIDE OF SAID FILAMENT, A PAIR OF CURVILINEAR BIMETALLIC STRIPS EXTENDING ONE FROM EACH OF SAID FIRST PAIR OF POSTS AND JOINED IN COMMON TO THE FIRST TERMINAL OF SAID FILAMENT TO MECHANICALLY SUPPORT SAID FIRST TERMINAL WHILE CARRYING CURRENT THERETO, A SECOND PAIR OF ELECTRICALLY CONDUCTIVE POSTS DISPOSED IN A LINE SUBSTANTIALLY PERPENDICULAR TO A LINE BETWEEN SAID FIRST PAIR OF POSTS, A SECOND PAIR OF CURVILINEAR BIMETALLIC ELEMENTS EXTENDING ONE FROM EACH OF SAID SECOND PAIR OF POSTS AND JOINED TO THE SECOND TERMINAL OF SAID FILAMENT TO SUPPORT SAID SECOND TERMINAL WHILE CARRYING CURRENT THERETO, AND MEANS SUPPLYING A PROPORTIONATELY VARIABLE CURRENT THROUGH SAID POSTS TO SAID BIMETALLIC ELEMENTS TO HEAT SAID ELEMENTS WHILE AT THE SAME TIME ENERGIZING SAID FILAMENT.
Claim 2
Dependent Claim
154 words
IN AN ELECTRON DISCHARGE DEVICE, AN APPARATUS FOR POSITIONING THE FILAMENT THEREOF COMPRISING FIRST AND SECOND TERMINALS FOR SAID FILAMENT, A FIRST PAIR OF POSTS ELECTRICALLY CONDUCTIVE DISPOSED ON EITHER SIDE OF SAID FILAMENT, A PAIR OF CURVILINEAR BIMETALLIC STRIPS EXTENDING ONE FROM EACH OF SAID FIRST PAIR OF POSTS AND JOINED IN COMMON TO THE FIRST TERMINAL OF SAID FILAMENT TO MECHANICALLY SUPPORT SAID FIRST TERMINAL WHILE CARRYING CURRENT THERETO, A SECOND PAIR OF ELECTRICALLY CONDUCTIVE POSTS DISPOSED IN A LINE SUBSTANTIALLY PERPENDICULAR TO A LINE BETWEEN SAID FIRST PAIR OF POSTS, A SECOND PAIR OF CURVILINEAR BIMETALLIC ELEMENTS EXTENDING ONE FROM EACH OF SAID SECOND PAIR OF POSTS AND JOINED TO THE SECOND TERMINAL OF SAID FILAMENT TO SUPPORT SAID SECOND TERMINAL WHILE CARRYING CURRENT THERETO, AND MEANS SUPPLYING A PROPORTIONATELY VARIABLE CURRENT THROUGH SAID POSTS TO SAID BIMETALLIC ELEMENTS TO HEAT SAID ELEMENTS WHILE AT THE SAME TIME ENERGIZING SAID FILAMENT.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |