US3757316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm assembly combined with cleanout plug structure
Assignee: Individual
•
Filing: 1972-02-23
•
Granted: 1973-09-04
•
Expires: 1992-02-23
Abstract
Abstract An alarm assembly for replacing the cleanout plug in a sewer outlet conduit. The assembly is a caplike structure dimensioned for replacing the said cleanout plug, and carries external threads adapted to mate with the threads in a cleanout opening at the sewer outlet. Water responsive means, such as a float or water activated probes, are mounted in the structure and arranged to sense presence of water at the end thereof facing inwardly of the sewer opening when the structure is emplaced at the sewer conduit.
Inventors
- 👤 J Fiorenzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:25
CPC Classifications
G; G08; G08B; G08B21/00; G08B21/18; G08B21/187
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
250 words
An alarm assembly for replacing a cleanout plug in a sewer outlet conduit, comprising in combination: a caplike structure for replacing said cleanout plug, said structure carrying external threads adapted to mate with the threads of the cleanout opening in the sewer conduit, said structure including a lower cylindrical portion bearing said threads, a water receiving space for receiving water rising in said conduit toward said cleanout opening, and an upper hollow casing portion; water responsive means mounted in said structure including a pair of conductive probes extending from the space within said casing portion to the water receiving space of said lower cylindrical portion; an alarm indicator means mounted at said caplike structure and disposed in an electrical alarm circuit in said upper hollow casing portion, said probes being disposed in said alarm circuit so that bridging of the probes by water entering said receiving space activates said alarm indicator; the said electrical circuit including said alarm indicator, a source of e.m.f. for powering said alarm indicator, an on/off switch in series with said alarm indicator and e.m.f. source, and a switching means activated by bridging of said conductive probes in series with said alarm indicator and e.m.f. source, for activating said alarm upon occurrence of bridging of said probes due to the presence of water; said switching means comprising a resetable latch, whereby the activation of said alarm due to the presence of water maintains said alarm in a position indicating condition until the resetting of said latch.
Claim 2
Dependent Claim
250 words
An alarm assembly for replacing a cleanout plug in a sewer outlet conduit, comprising in combination: a caplike structure for replacing said cleanout plug, said structure carrying external threads adapted to mate with the threads of the cleanout opening in the sewer conduit, said structure including a lower cylindrical portion bearing said threads, a water receiving space for receiving water rising in said conduit toward said cleanout opening, and an upper hollow casing portion; water responsive means mounted in said structure including a pair of conductive probes extending from the space within said casing portion to the water receiving space of said lower cylindrical portion; an alarm indicator means mounted at said caplike structure and disposed in an electrical alarm circuit in said upper hollow casing portion, said probes being disposed in said alarm circuit so that bridging of the probes by water entering said receiving space activates said alarm indicator; the said electrical circuit including said alarm indicator, a source of e.m.f. for powering said alarm indicator, an on/off switch in series with said alarm indicator and e.m.f. source, and a switching means activated by bridging of said conductive probes in series with said alarm indicator and e.m.f. source, for activating said alarm upon occurrence of bridging of said probes due to the presence of water; said switching means comprising a resetable latch, whereby the activation of said alarm due to the presence of water maintains said alarm in a position indicating condition until the resetting of said latch.
Claim 3
Dependent Claim
37 words
A device according to claim 1, wherein said structure includes means for securing hook means at a side thereof, whereby said device may be converted for suspension in a basin to act therein as an overflow alarm.
Claim 4
Dependent Claim
52 words
A device in accordance with claim 1 wherein said caplike structure further includes a portion intermediate said casing and cylindrical portions, the periphery of which bears flat faces, thereby enabling a wrench to be brought to bear upon said portion for loosening or tightening the said cap at the conduit cleanout opening.
Claim 5
Dependent Claim
13 words
A device in accordance with claim 1 wherein said latch comprises an SCR.
Claim 6
Dependent Claim
128 words
A water responsive alarm circuit comprising in combination: an alarm device; a source of E.M.F. in series with said alarm device; an enabling switch connected in series with said source of the E.M.F. and alarm device; a normally non-conducting SCR connected in series with said alarm device, enabling switch and E.M.F. source, the anode of said SCR being connected to the positivE side of said E.M.F. source and the cathode of said SCR being connected to the ground side of said circuit; and a pair of spaced conductive probes connected across the gate-anode circuit of said SCR, whereby when said circuit is enabled by closure of said enabling switch and said probe pair is bridged by water therebetween, the said SCR is fired to activate said alarm device.
Claim 7
Dependent Claim
128 words
A water responsive alarm circuit comprising in combination: an alarm device; a source of E.M.F. in series with said alarm device; an enabling switch connected in series with said source of the E.M.F. and alarm device; a normally non-conducting SCR connected in series with said alarm device, enabling switch and E.M.F. source, the anode of said SCR being connected to the positivE side of said E.M.F. source and the cathode of said SCR being connected to the ground side of said circuit; and a pair of spaced conductive probes connected across the gate-anode circuit of said SCR, whereby when said circuit is enabled by closure of said enabling switch and said probe pair is bridged by water therebetween, the said SCR is fired to activate said alarm device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |