Patent US3377576A successfully refreshed from Google Patents.
US3377576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gallium-wetted movable electrode switch
Assignee: Metcom Inc
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Filing: 1965-05-03
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Granted: 1968-04-09
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Langberg Edwin
- 👤 Louis W Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:52
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/28; H01H51/288
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
135 words
AN ELECTRICAL SWITCH COMPRISED OF AN EVACUATED HIGH DIELECTRIC MATERIAL ENVELOPE; A FIRST AND A SECOND ELONGATED FIXED ELECTRODE MOUNTED IN COAXIALLY ALIGNED SPACED RELATIONSHIP WITHIN THE ENVELOPE, THE FIRST SUCH FIXED ELECTRODE BEING CHARACTERIZED BY HAVING A HOLLOW CENTRAL RECESS HAVING AN APERTURE OPENING INTO THE SPACE BETWEEN THE FIXED ELECTRODES; A SLIDING CYLINDRICAL ELECTRODE SLIDABLY MOUNTED WITHIN THE RECESS, SUCH SLIDING ELECTRODE BEING OF RELATIVELY HIGH MAGNETICALLY PERMEABLE MATERIAL; A LUBRICATING SELF-HEALING FILM OF GALLIUM METAL WETTING THE ELECTRODE SURFACES; AND MAGNETIC MEANS FOR POSITIONING THE SLIDING ELECTRODE ALONG THE FIRST FIXED ELECTRODE AND RELATIVE TO THE SECOND FIXED ELECTRODE, BEING MOUNTED TO THE ENVELOPE; WHEREBY ELECTRICAL CONTACT BETWEEN THE FIXED ELECTRODES MAY BE MADE AND BROKEN BY ALTERNATELY MOVING THE SLIDING ELECTRODE INTO AND OUT OF CONTACT WITH THE SECOND FIXED ELECTRODE.
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |