US3176101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid contact switch with auxiliary heating means
Assignee: Telefunken AG
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Filing: 1960-03-17
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Granted: 1965-03-30
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Expires: 1980-03-17
Abstract
No abstract record available.
Inventors
- 👤 Hans Awender
- 👤 Erhard Becker
- 👤 Manfred Franke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:57
CPC Classifications
H; H01; H01H; H01H61/00; F; F21; F21L; F21L2/00; F21V; F21V25/00; F21V25/02; F21V25/06; H01H29/00; H01H29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A THERMO RELAY COMPRISING; A FIRST GAS-FILLED CHAMBER, A SECOND GAS-FILLED CHAMBER, A CONDUIT INTERCONNECTING SAID TWO CHAMBERS; TWO ELECTRICAL CONDUCTORS IN SAID CONDUIT INSULATED FROM EACH OTHER; AN ELECTRICALLY CONDUCTIVE LIQUID DROP IN SAID CONDUIT MOVABLE THEREIN FOR INTERCONNECTING SAID TWO CONDUCTORS; HEAT GENERATING MEANS POSITIONED IN SAID FIRST CHAMBER; AND MEANS LOCATED EXTERIORLY OF SAID SECOND CHAMBER AND CONNECTED WITH SAID FIRST CHAMBER FOR HEATING THE WALL OF SAID SECOND CHAMBER FROM THE OUTSIDE THEREOF.
Claim 2
Dependent Claim
77 words
A THERMO RELAY COMPRISING; A FIRST GAS-FILLED CHAMBER, A SECOND GAS-FILLED CHAMBER, A CONDUIT INTERCONNECTING SAID TWO CHAMBERS; TWO ELECTRICAL CONDUCTORS IN SAID CONDUIT INSULATED FROM EACH OTHER; AN ELECTRICALLY CONDUCTIVE LIQUID DROP IN SAID CONDUIT MOVABLE THEREIN FOR INTERCONNECTING SAID TWO CONDUCTORS; HEAT GENERATING MEANS POSITIONED IN SAID FIRST CHAMBER; AND MEANS LOCATED EXTERIORLY OF SAID SECOND CHAMBER AND CONNECTED WITH SAID FIRST CHAMBER FOR HEATING THE WALL OF SAID SECOND CHAMBER FROM THE OUTSIDE THEREOF.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |