US3703715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flood alarm
Assignee: Individual
•
Filing: 1970-12-21
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Granted: 1972-11-21
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Expires: 1990-12-21
Abstract
Abstract An alarm for indicating a sudden flow of liquid such as water or the like either into or out of a basement drain or the like at a predetermined rate of flow, the alarm being inoperable when the flow of liquid into the drain is at a predetermined low rate.
Inventors
- 👤 Byron L Mcnally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:54
CPC Classifications
G; G01; G01P; G01P13/00; G01P13/0006; G01P13/0013; G01P13/002; F; F16; F16L; F16L2101/00; F16L2101/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
An alarm system for detecting a sudden flow of liquid at a relatively large rate of flow comprising a housing adapted to be snugly received in a floor drain pipe in spaced relation to the sides thereof, said housing including a compartment for a dry cell battery and a cup slidably mounted in superposed relation to a switch, said cup being normally biased upwardly but being movable downwardly to engage said switch, said switch being connected in series with an audible alarm so that when a liquid such as water or the like flows at a predetermined rate, it will flow into said cup, close said switch and energize said audible alarm.
Claim 2
Dependent Claim
112 words
An alarm system for detecting a sudden flow of liquid at a relatively large rate of flow comprising a housing adapted to be snugly received in a floor drain pipe in spaced relation to the sides thereof, said housing including a compartment for a dry cell battery and a cup slidably mounted in superposed relation to a switch, said cup being normally biased upwardly but being movable downwardly to engage said switch, said switch being connected in series with an audible alarm so that when a liquid such as water or the like flows at a predetermined rate, it will flow into said cup, close said switch and energize said audible alarm.
Claim 3
Dependent Claim
112 words
An alarm system for detecting a sudden flow of liquid at a relatively large rate of flow comprising a housing adapted to be snugly received in a floor drain pipe in spaced relation to the sides thereof, said housing including a compartment for a dry cell battery and a cup slidably mounted in superposed relation to a switch, said cup being normally biased upwardly but being movable downwardly to engage said switch, said switch being connected in series with an audible alarm so that when a liquid such as water or the like flows at a predetermined rate, it will flow into said cup, close said switch and energize said audible alarm.
Claim 4
Dependent Claim
112 words
An alarm system for detecting a sudden flow of liquid at a relatively large rate of flow comprising a housing adapted to be snugly received in a floor drain pipe in spaced relation to the sides thereof, said housing including a compartment for a dry cell battery and a cup slidably mounted in superposed relation to a switch, said cup being normally biased upwardly but being movable downwardly to engage said switch, said switch being connected in series with an audible alarm so that when a liquid such as water or the like flows at a predetermined rate, it will flow into said cup, close said switch and energize said audible alarm.
Claim 5
Dependent Claim
31 words
A system in accordance with claim 1 wherein a cap is provided for the lower end of said compartment of the housing so that the battery may be replaced when required.
Claim 6
Dependent Claim
36 words
A system in accordance with claim 2 wherein said cap is provided with a plurality of circumferentially spaced radially outwardly extending tangs for mounting the housing in spaced relation to the walls of the drain pipe.
Claim 7
Dependent Claim
50 words
A system in accordance with claim 3 wherein a plurality of spring clips are mounted in circumferentially spaced relation on the outer periphery of the upper end of said housing to cooperate with said tangs in maintaining the housing in spaced relation to the side walls of the drain pipe.
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |