US3582930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for indicating the presence of conductive fluids
Assignee: Individual
•
Filing: 1969-03-11
•
Granted: 1971-06-01
•
Expires: 1989-03-11
Abstract
Abstract An electrical device for sensing the presence of fluids includes a pair of spaced electrodes connected in a series electrical circuit with an indicator and a source of electrical energy. Contact of the electrodes with an electrically conductive fluid completes the electrical circuit through the space between the electrodes and the resulting current flow activates the indicator.
Inventors
- 👤 Alfred N Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:11
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/24; G01F23/241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
219 words
A device for indicating the presence of water above a normal water level in the bilge of a hull of a watercraft, comprising a source of electrical energy comprising a DC battery, sensing means comprising first and second electrodes mounted in spaced relationship in a block of insulating material, a pair of brackets, one end of each of said brackets being secured to the block of insulating material, the other end of said pair of brackets resting on the hull of the watercraft whereby the electrodes are mounted in the bilge of said craft at a predetermined level above the hull of the watercraft, transducer means connected in a series electrical circuit with said source of electrical energy and said sensing means for producing an audible alarm signal responsive to the completion of said series circuit between said spaced electrodes by the presence of water at said predetermined level, and testing means including a triple-throw switch located at a control station in said craft for testing the operability of said series electrical circuit, said switch including an off position wherein said circuit is open circuited, a test position wherein said circuit is completed directly through said switch and an on position wherein said circuit, if completed, is completed through said electrodes, said transducer being located At said control station.
Claim 2
Independent Claim
219 words
A device for indicating the presence of water above a normal water level in the bilge of a hull of a watercraft, comprising a source of electrical energy comprising a DC battery, sensing means comprising first and second electrodes mounted in spaced relationship in a block of insulating material, a pair of brackets, one end of each of said brackets being secured to the block of insulating material, the other end of said pair of brackets resting on the hull of the watercraft whereby the electrodes are mounted in the bilge of said craft at a predetermined level above the hull of the watercraft, transducer means connected in a series electrical circuit with said source of electrical energy and said sensing means for producing an audible alarm signal responsive to the completion of said series circuit between said spaced electrodes by the presence of water at said predetermined level, and testing means including a triple-throw switch located at a control station in said craft for testing the operability of said series electrical circuit, said switch including an off position wherein said circuit is open circuited, a test position wherein said circuit is completed directly through said switch and an on position wherein said circuit, if completed, is completed through said electrodes, said transducer being located At said control station.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |