US3102179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid contact switch
Assignee: Individual
•
Filing: 1958-07-11
•
Granted: 1963-08-27
•
Expires: 1978-07-11
Abstract
No abstract record available.
Inventors
- 👤 Hermeyer Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:37
CPC Classifications
H; H01; H01H; H01H61/00; H01H29/00; H01H29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A REMOTE CONTROL SWITCH COMPRISING A HOUSING OF INSULATING MATERIAL, A FIRST AND A SECOND CHAMBER IN SAID HOUSING, SAID FIRST CHAMBER HAVING A GREATER VOLUME THAN SAID SECOND CHAMBER, A QUANTITY OF GAS IN EACH OF SAID CHAMBERS, SAID GAS BEING FILLED AT A PRESSURE GREATER THAN ATMOSPHERIC PRESSURE, A SUBSTANTIALLY STRAIGHT, NARROW CAPILLARY BORE COMMUNICATING WITH SAID CHAMBERS, AN ELECTRIC HEATING DEVICE IN SAID FIRST CHAMBER, AT LEAST TWO ELECTRICAL CONTACTS EXTENDING INTO SAID BORE, A SWITCHING MERCURY COLUMN FOR THE CONTACTS IN SAID BORE NORMALLY POSITIONED IN SUSPENDED STATE AND SERVING AS A BRIDGE FOR THE CONTACTS, GAS PRESSURE OF THE SECOND CHAMBER SERVING AS A CUSHION FOR THE MERCURY AND SERVING RAPIDLY TO RETURN THE MERCURY TO ITS NORMAL POSITION AFTER THE HEATING DEVICE IS DE-ENERGIZED.
Claim 2
Dependent Claim
130 words
A REMOTE CONTROL SWITCH COMPRISING A HOUSING OF INSULATING MATERIAL, A FIRST AND A SECOND CHAMBER IN SAID HOUSING, SAID FIRST CHAMBER HAVING A GREATER VOLUME THAN SAID SECOND CHAMBER, A QUANTITY OF GAS IN EACH OF SAID CHAMBERS, SAID GAS BEING FILLED AT A PRESSURE GREATER THAN ATMOSPHERIC PRESSURE, A SUBSTANTIALLY STRAIGHT, NARROW CAPILLARY BORE COMMUNICATING WITH SAID CHAMBERS, AN ELECTRIC HEATING DEVICE IN SAID FIRST CHAMBER, AT LEAST TWO ELECTRICAL CONTACTS EXTENDING INTO SAID BORE, A SWITCHING MERCURY COLUMN FOR THE CONTACTS IN SAID BORE NORMALLY POSITIONED IN SUSPENDED STATE AND SERVING AS A BRIDGE FOR THE CONTACTS, GAS PRESSURE OF THE SECOND CHAMBER SERVING AS A CUSHION FOR THE MERCURY AND SERVING RAPIDLY TO RETURN THE MERCURY TO ITS NORMAL POSITION AFTER THE HEATING DEVICE IS DE-ENERGIZED.
References Cited (Backward Citations)
US2046578A
Cited
US2106756A
Cited
US2178487A
Cited
US2329614A
Cited
US2621268A
Cited
US2644058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |