Patent US3088014A successfully refreshed from Google Patents.
US3088014A
Expired / Lapsed
US
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Mercury switch
Assignee: Varifab Inc
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Filing: 1961-06-01
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Granted: 1963-04-30
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Expires: 1981-06-01
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:29
CPC Classifications
H; H01; H01H; H01H29/00; H01H29/20; H01H29/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A TILT-SENSITIVE SWITCH, AN ELONGATED PLASTIC-WALLED CHAMBER OF CIRCULAT CROSS-SECTION, BOTH ENDS THEREOF BEING SEALED WITH AT LEAST ONE END SEALED BY A PLUG HAVING A CONCAVE SURFACE FACING THE CHAMBER, THE PLUG COMPRISING AN ANNULAR ELECTRODE SURROUNDING A PLASTIC INSERT AND COOTHER ELECTRODE EXTENDING THROUGH THE INSERT AND COAXIALLY THROUGH THE CHAMBER; AND A GLOBULE OF MERCURY WITHIN THE CHAMBER OUT OF CONTACT WITH THE ANNULAR ELECTRODE UNLESS THE CHAMBER IS TILTED TOWARD THAT ELECTRODE, AND INVARIABLY IN CONTACT WITH THE OTHER ELECTRODE.
Claim 2
Dependent Claim
85 words
IN A TILT-SENSITIVE SWITCH, AN ELONGATED PLASTIC-WALLED CHAMBER OF CIRCULAT CROSS-SECTION, BOTH ENDS THEREOF BEING SEALED WITH AT LEAST ONE END SEALED BY A PLUG HAVING A CONCAVE SURFACE FACING THE CHAMBER, THE PLUG COMPRISING AN ANNULAR ELECTRODE SURROUNDING A PLASTIC INSERT AND COOTHER ELECTRODE EXTENDING THROUGH THE INSERT AND COAXIALLY THROUGH THE CHAMBER; AND A GLOBULE OF MERCURY WITHIN THE CHAMBER OUT OF CONTACT WITH THE ANNULAR ELECTRODE UNLESS THE CHAMBER IS TILTED TOWARD THAT ELECTRODE, AND INVARIABLY IN CONTACT WITH THE OTHER ELECTRODE.
References Cited (Backward Citations)
US489266A
Cited
US2823284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |