US3370154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric fluid heater
Assignee: Theodor Fe Fuchslocher
•
Filing: 1964-06-29
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Granted: 1968-02-20
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Theodor F E Fuchslocher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:09
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/40; F; F24; F24H; F24H1/00; F24H1/10; F24H1/101; F24H1/102; F24H1/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A FLUID HEATER COMPRISING: A CASING INCLUDING ELECTRICAL INSULATING MEANS DEFINING A FLUID PASSAGEWAY, SAID CASING INCLUDING AN INLET ADJACENT ONE EXTREMITY OF SAID PASSAGEWAY FOR INCOMING COLD FLUID AND AN OUTLET ADJACENT THE OPPOSITE EXTREMITY OF SAID PASSAGEWAY FOR OUTGOING HEATED FLUID; ELECTRICAL HEATING MEANS EXTENDING THROUGH AT LEAST A PORTION OF SAID PASSAGEWAY; MEANS INCLUDING A PLURALITY OF SECONDARY SWITCHES OPERATIVE TO COUPLE DIFFERENT PORTIONS OF SAID HEATING MEANS IN PARALLEL CIRCUIT WITH ONE ANOTHER, AND INCLUDING A PRIMARY SWITCH OPERATIVE TO COUPLE SAID PARALLEL CIRCUIT WITH A SOURCE OF ELECTRICAL ENERGY TO ENERGIZE SAID HEATING MEANS; AND MEANS RESPONSIVE TO FLUID FLOW THROUGH SAID PASSAGEWAY TO OPERATE SAID PRIMARY SWITCH AND SUBSEQUENTLY SAID SECONDARY SWITCHES.
Claim 2
Dependent Claim
118 words
A FLUID HEATER COMPRISING: A CASING INCLUDING ELECTRICAL INSULATING MEANS DEFINING A FLUID PASSAGEWAY, SAID CASING INCLUDING AN INLET ADJACENT ONE EXTREMITY OF SAID PASSAGEWAY FOR INCOMING COLD FLUID AND AN OUTLET ADJACENT THE OPPOSITE EXTREMITY OF SAID PASSAGEWAY FOR OUTGOING HEATED FLUID; ELECTRICAL HEATING MEANS EXTENDING THROUGH AT LEAST A PORTION OF SAID PASSAGEWAY; MEANS INCLUDING A PLURALITY OF SECONDARY SWITCHES OPERATIVE TO COUPLE DIFFERENT PORTIONS OF SAID HEATING MEANS IN PARALLEL CIRCUIT WITH ONE ANOTHER, AND INCLUDING A PRIMARY SWITCH OPERATIVE TO COUPLE SAID PARALLEL CIRCUIT WITH A SOURCE OF ELECTRICAL ENERGY TO ENERGIZE SAID HEATING MEANS; AND MEANS RESPONSIVE TO FLUID FLOW THROUGH SAID PASSAGEWAY TO OPERATE SAID PRIMARY SWITCH AND SUBSEQUENTLY SAID SECONDARY SWITCHES.
References Cited (Backward Citations)
US1437046A
Cited
US1163536A
Cited
US1214757A
Cited
US1526683A
Cited
US1899839A
Cited
GB524525A
Cited
GB527511A
Cited
US2791671A
Cited
US3088017A
Cited
US3230346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |