US3580776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing electric contact between two cemented parts
Assignee: GALINA KONSTANTINOVNA MELNIKOV
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Filing: 1967-06-09
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Granted: 1971-05-25
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Expires: 1987-06-09
Abstract
Abstract A METHOD IS PROVIDED FOR PRODUCING AN ELECTRIC CONTACT BY MEANS OF A CURRENT-CONDUCTING CEMENT CONSTITUTED AS A HARDENING EPOXY RESIN CONTAINING A CURRENT-CONDUCTING FERROMAGNETIC FILLER. THE CEMENT FILM IS HARDENED IN A NON-UNIFORM MAGNETIC FIELD HAVING A VARIABLE INTENSITY ACROSS THE FIELD SECTION, AND INITIALLY A PULSATING MAGNETIC FIELD IS APPLIED HAVING A FREQUENCY OF 0.1 TO 1000 C.P.S. WHEN THE STATIC COMPONENT OF MAGNETIC INDUCTION HAS A VALUE OF 50 TO 15,000 GAUSSES AND WHEN THE AMPLITUDE IS WITHIN THE RANGE OF 10 TO 5000 GAUSSES.
Inventors
- 👤 Leonid Zalmanovich Shenfil
- 👤 Valentin Evgenievich Gul
- 👤 Galina Konstantinovn Melnikova
- 👤 Nina Isidorovna Siprikova
- 👤 Maiya Konstan Rozhdestvenskaya
- 👤 Alexandr Nikitichna Kuzina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:18
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |