US3222489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for inhibition of electrical-contact failure
Assignee: SRI International Inc
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Filing: 1964-05-04
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Granted: 1965-12-07
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Saul W Chaikin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:31
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/02; H01B3/16; H01H; H01H1/00; H01H1/02; H01H1/0201; H01H1/64; H01H1/645
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A PROCESS FOR INHIBITING FRICTIONAL POLYMER FORMATION IN SEALED CONTACT DEVICES IN WHICH ELECTRIC CONTACTS ARE AT LEAST COATED WITH A METAL OF THE PLATINUM FAMILY, AND IN WHICH SAID CONTACTS REPEATEDLY MAKE AND BREAK AN ELECTRIC CIRCUIT,THE STEP OF PORVIDING THE VAPOR SPACE WITHIN SAID SEALED ELECTRIC CONTACT DEVICE WITH A VOLATILE ORGANO-METALLIC COMPOUND CAPABLE OF FORMING FREE RADICALS UNDER THE OPERATING CONDITONS EXISTING WITHIN SAID SEALED CONTACT DEVICE.
Claim 2
Dependent Claim
71 words
IN A PROCESS FOR INHIBITING FRICTIONAL POLYMER FORMATION IN SEALED CONTACT DEVICES IN WHICH ELECTRIC CONTACTS ARE AT LEAST COATED WITH A METAL OF THE PLATINUM FAMILY, AND IN WHICH SAID CONTACTS REPEATEDLY MAKE AND BREAK AN ELECTRIC CIRCUIT,THE STEP OF PORVIDING THE VAPOR SPACE WITHIN SAID SEALED ELECTRIC CONTACT DEVICE WITH A VOLATILE ORGANO-METALLIC COMPOUND CAPABLE OF FORMING FREE RADICALS UNDER THE OPERATING CONDITONS EXISTING WITHIN SAID SEALED CONTACT DEVICE.
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) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |