US3142736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Periodic mercury relay
Assignee: Ebert Electronics Corp
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Filing: 1961-10-31
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Granted: 1964-07-28
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Expires: 1981-10-31
Abstract
No abstract record available.
Inventors
- 👤 Irving L Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:33
CPC Classifications
H; H01; H01H; H01H29/00; H01H29/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A PERIODIC MERCURY RELAY OF THE DISPLACER TYPE, COMPRISING A POOL OF MERCURY, AN ENVELOPE FABRICATED OF MATERIAL HAVING THE PROPERTIES OF BEING SELF LUBRICATED AND OF AN ELECTRICAL INSULATOR FOR SAID POOL OF MERCURY, SAID ENVELOPE CONTAINING SAID POOL OF MERCURY, A PAIR OF SPACED ELECTRODES MOUNTED IN SAID CONTAINER, A MERCURY DISPLACING ELEMENT BUOYANT IN SAID MERCURY POOL AND INCLUDING A TUBULAR ARMATURE PORTION AND A LINEAR PORTION OF CERAMIC LOCATED INSIDE SAID TUBULAR PORTION, SAID LINER PORTION BEING IN THE FORM OF AN INVERTED DOME HAVING A CAP AND HAVING A METERING ORIFICE IN THE CAP, MEANS MOUNTED ON SAID MERCURY DISPLACING ELEMENT FOR ESTABLISHING SELFLUBRICATIVE SLIDING CONTACT WITH SAID CONTAINER, RESILIENT MEANS BIASING SAID MERCURY DISPLACING ELEMENT BELOW ITS POSITION OF NATURAL BUOYANCY IN SAID MERCURY POOL, ELECTROMAGNETIC ENERGIZING COIL MEANS LOCATED IN SURROUNDING RELATIONSHIP TO A PORTION OF SAID CONTAINER AND WHICH WHEN ENERGIZED, ACTUATE SAID MERCURY DISPLACING MEMBER AGAINST THE BIAS OF SAID RESILIENT MEANS SO THAT THE LEVEL OF SAID POOL OF MERCURY DROPS BELOW THE LEVEL REQUIRED TO BRIDGE SAID SPACED ELECTRODES IN SAID CONTAINER, AND MEANS CONNECTING SAID SPACED ELECTRODES IN SERIES WITH SAID ENERGIZING COIL.
Claim 2
Dependent Claim
195 words
A PERIODIC MERCURY RELAY OF THE DISPLACER TYPE, COMPRISING A POOL OF MERCURY, AN ENVELOPE FABRICATED OF MATERIAL HAVING THE PROPERTIES OF BEING SELF LUBRICATED AND OF AN ELECTRICAL INSULATOR FOR SAID POOL OF MERCURY, SAID ENVELOPE CONTAINING SAID POOL OF MERCURY, A PAIR OF SPACED ELECTRODES MOUNTED IN SAID CONTAINER, A MERCURY DISPLACING ELEMENT BUOYANT IN SAID MERCURY POOL AND INCLUDING A TUBULAR ARMATURE PORTION AND A LINEAR PORTION OF CERAMIC LOCATED INSIDE SAID TUBULAR PORTION, SAID LINER PORTION BEING IN THE FORM OF AN INVERTED DOME HAVING A CAP AND HAVING A METERING ORIFICE IN THE CAP, MEANS MOUNTED ON SAID MERCURY DISPLACING ELEMENT FOR ESTABLISHING SELFLUBRICATIVE SLIDING CONTACT WITH SAID CONTAINER, RESILIENT MEANS BIASING SAID MERCURY DISPLACING ELEMENT BELOW ITS POSITION OF NATURAL BUOYANCY IN SAID MERCURY POOL, ELECTROMAGNETIC ENERGIZING COIL MEANS LOCATED IN SURROUNDING RELATIONSHIP TO A PORTION OF SAID CONTAINER AND WHICH WHEN ENERGIZED, ACTUATE SAID MERCURY DISPLACING MEMBER AGAINST THE BIAS OF SAID RESILIENT MEANS SO THAT THE LEVEL OF SAID POOL OF MERCURY DROPS BELOW THE LEVEL REQUIRED TO BRIDGE SAID SPACED ELECTRODES IN SAID CONTAINER, AND MEANS CONNECTING SAID SPACED ELECTRODES IN SERIES WITH SAID ENERGIZING COIL.
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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |