Patent US2604575A successfully refreshed from Google Patents.
Patent US3407495A successfully refreshed from Google Patents.
US3407495A
Expired / Lapsed
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Process for manufacturing circuit breaker elements
Assignee: Qualtronics Corp
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Filing: 1966-05-27
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Granted: 1968-10-29
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Expires: 1986-05-27
Abstract
No abstract record available.
Inventors
- 👤 Leon F Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:54
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/22; H01H; H01H1/00; H01H1/02; H01H1/021; H01H71/00; H01H71/10; H01H71/12; H01H71/14; H10; H10N; H10N70/00; H10N70/011; H10N70/021; H10N70/20; H10N70/801; H10N70/881; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A PROCESS FOR MANUFACTURING A SWITCHING DEVICE THAT TRIGGERS FROM A LOW RESISTANCE TO A HIGH RESISTANCE IN RESPONSE TO A PREDETERMINED LEVEL OF CURRENT PASSING THROUGH THE DEVICE COMPRISING THE STEP OF MIXING OXIDIZED METAL PARTICLES TOGETHER WITH A SLOW CURING NONCONDUCTIVE BINDER CEMENT, PLACING THE MIXTURE IN A NONCONDUCTIVE MOLD WITH A PAIR OF SPACED CONDUCTORS EXTENDING INTO THE MIXTURE, PLACING THE MOLD IN A STRONG ELECTROSTATIC FIELD DURING THE INITIAL SETTING OF THE BINDER CEMENT AND CURING THE MIXTURE TO FORM A SOLID TWO-TERMINAL ELECTRIAL DEVICE.
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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |