US3249724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-capillary switch
Assignee: Individual
•
Filing: 1962-12-13
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Granted: 1966-05-03
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Expires: 1982-12-13
Abstract
No abstract record available.
Inventors
- 👤 Hurvitz Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:27
CPC Classifications
H; H01; H01H; H01H29/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
AN ELECTRO-CAPILLARY SWITCH, COMPRISING FIRST, SECOND, THIRD AND FOURTH CONDUCTIVE CAPILLARY MERCURY WETTABLE TUBES INSULATING MERCURY UNWETTABLE RINGS SEPARATING SAID FIRST TUBE FROM SAID SECOND TUBE, SAID SECOND TUBE FROM SAID THIRD TUBE AND SAID THIRD TUBE FROM SAID FOURTH TUBE, SAID FIRST AND FOURTH TUBES INCLUDING ELECTRICAL CONTACTS, A FIRST COLUMN OF MERCURY FILLING SAID FIRST TUBE, SAID FIRST RING AND SAID SECOND TUBE, A SECOND COLUMN OF MERCURY FILLING SAID THIRD TUBE AND SAID FOURTH TUBE, SAID THIRD RING ONLY BEING EMPTY OF MERCURY, A QUANTITY OF ELECTRO-CAPILLARY ELECTROLYTE IN SAID SECOND RING IN CONTACT WITH SAID MERCURY IN SAID SECOND AND THIRD TUBES AND MAINTAINING SAID FIRST COLUMN OF MERCURY SEPARATED FROM SAID SECOND COLUMN OF MERCURY, AND MEANS FOR APPLYING VOLTAGE BETWEEN SAID SECOND AND THIRD TUBES WHEREBY SAID MERCURY MAY BE CAUSED TO MOVE INTO AND OUT OF ELECTRICAL ENGAGEMENT WITH SAID CONTACTS.
Claim 2
Dependent Claim
148 words
AN ELECTRO-CAPILLARY SWITCH, COMPRISING FIRST, SECOND, THIRD AND FOURTH CONDUCTIVE CAPILLARY MERCURY WETTABLE TUBES INSULATING MERCURY UNWETTABLE RINGS SEPARATING SAID FIRST TUBE FROM SAID SECOND TUBE, SAID SECOND TUBE FROM SAID THIRD TUBE AND SAID THIRD TUBE FROM SAID FOURTH TUBE, SAID FIRST AND FOURTH TUBES INCLUDING ELECTRICAL CONTACTS, A FIRST COLUMN OF MERCURY FILLING SAID FIRST TUBE, SAID FIRST RING AND SAID SECOND TUBE, A SECOND COLUMN OF MERCURY FILLING SAID THIRD TUBE AND SAID FOURTH TUBE, SAID THIRD RING ONLY BEING EMPTY OF MERCURY, A QUANTITY OF ELECTRO-CAPILLARY ELECTROLYTE IN SAID SECOND RING IN CONTACT WITH SAID MERCURY IN SAID SECOND AND THIRD TUBES AND MAINTAINING SAID FIRST COLUMN OF MERCURY SEPARATED FROM SAID SECOND COLUMN OF MERCURY, AND MEANS FOR APPLYING VOLTAGE BETWEEN SAID SECOND AND THIRD TUBES WHEREBY SAID MERCURY MAY BE CAUSED TO MOVE INTO AND OUT OF ELECTRICAL ENGAGEMENT WITH SAID CONTACTS.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |