Patent US2586963A successfully refreshed from Google Patents.
US3257643A
Expired / Lapsed
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Safety signaling system for marine engine cooling systems
Assignee: Individual
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Filing: 1963-09-30
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Granted: 1966-06-21
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Fred N Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:37
CPC Classifications
G; G08; G08B; G08B21/00; G08B21/18; G08B21/187; G01; G01F; G01F23/00; G01F23/22; G01F23/24; G01F23/241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A SIGNALING SYSTEM FOR MARINE ENGINES TO INDICATE THE CONDITION OF AN ELECTRICAL IGNITION SYSTEM AND A WATER COOLANT SYSTEM EMPLOYED IN THE ENGINE, SAID SYSTEM EMPLOYING A FIRST CIRCUIT OPERATIVE WHEN AN IGNITION SWTICH IS TURNED ON THE ENERGIZE A WARNING LIGHT TO INDICATE THAT THE IGNITION IS ON AND THAT COOLANT IS NOT BEING CIRCULATED THROUGH THE COOLANT SYSTEM, AND A SECOND CIRCUIT INCLUDING A SENSOR ELEMENT ESTABLISHED BY THE CIRCULATION OF WATER THROUGH THE COOLANT SYSTEM WHEN IN CONTACT WITH THE SENSOR ELEMENT TO PROVIDE A SHORT CIRCUITING GROUND TO THE ENGINE, THEREBY ENERGIZING A RELAY TO OPEN THE FIRST CIRCUIT AND ESTABLISH A CONNECTION TO A SECOND LIGHT INDICATING SATISFACTORY OPERATION OF SAID COOLANT SYSTEM.
Claim 2
Dependent Claim
119 words
A SIGNALING SYSTEM FOR MARINE ENGINES TO INDICATE THE CONDITION OF AN ELECTRICAL IGNITION SYSTEM AND A WATER COOLANT SYSTEM EMPLOYED IN THE ENGINE, SAID SYSTEM EMPLOYING A FIRST CIRCUIT OPERATIVE WHEN AN IGNITION SWTICH IS TURNED ON THE ENERGIZE A WARNING LIGHT TO INDICATE THAT THE IGNITION IS ON AND THAT COOLANT IS NOT BEING CIRCULATED THROUGH THE COOLANT SYSTEM, AND A SECOND CIRCUIT INCLUDING A SENSOR ELEMENT ESTABLISHED BY THE CIRCULATION OF WATER THROUGH THE COOLANT SYSTEM WHEN IN CONTACT WITH THE SENSOR ELEMENT TO PROVIDE A SHORT CIRCUITING GROUND TO THE ENGINE, THEREBY ENERGIZING A RELAY TO OPEN THE FIRST CIRCUIT AND ESTABLISH A CONNECTION TO A SECOND LIGHT INDICATING SATISFACTORY OPERATION OF SAID COOLANT SYSTEM.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |