US3803573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pool alarm apparatus
Assignee: Individual
•
Filing: 1971-09-21
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Granted: 1974-04-09
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Expires: 1991-09-21
Abstract
Abstract An automatic pool alarm includes a floating assembly including a control assembly floating on the surface for affording relative stability in the water. The control assembly includes a reed switch and permanent magnet assembly, the reed switch being actuated or closed by the magnet. The magnet is attracted to a metallic plate of the reed switch assembly when movement of the magnet resulting from waves produced by an object falling into the water, causes the plate to move to a position within the magnetic influence of the magnet and the reed switch operation completes an electrical circuit to actuate an alarm. The reed switch assembly is encapsulated to prevent direct contact with the water.
Inventors
- 👤 J Schonger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:08
CPC Classifications
G; G08; G08B; G08B21/00; G08B21/02; G08B21/08; G08B21/084
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
Pool alarm apparatus comprising in combination an alarm control assembly, said alarm control assembly comprising first and second alarm control elements positioned in a first position, means for maintaining said first alarm control element within a predetermined distance of the surface of the water in a pool, means responsive to the waves resulting from an object falling into the water of said pool for moving said first element into a second position, means responsive to the relative positions of said first and second alarm control elements for energizing said pool alarm apparatus, and magnetic circuit means to maintain said apparatus in said energized alarm condition.
Claim 2
Dependent Claim
105 words
Pool alarm apparatus comprising in combination an alarm control assembly, said alarm control assembly comprising first and second alarm control elements positioned in a first position, means for maintaining said first alarm control element within a predetermined distance of the surface of the water in a pool, means responsive to the waves resulting from an object falling into the water of said pool for moving said first element into a second position, means responsive to the relative positions of said first and second alarm control elements for energizing said pool alarm apparatus, and magnetic circuit means to maintain said apparatus in said energized alarm condition.
Claim 3
Dependent Claim
19 words
Apparatus of the type claimed in claim 1 wherein said means for energizing said pool alarm apparatus is magnetic.
Claim 4
Dependent Claim
18 words
Apparatus of the type claimed in claim 2 wherein said first alarm control element includes a permanent magnet.
Claim 5
Dependent Claim
18 words
Apparatus of the type claimed in claim 3 wherein said permanent magnet is imbedded in a waterproof container.
Claim 6
Dependent Claim
19 words
Apparatus of the type claimed in claim 3 wherein said second alarm control elements include a reed switch assembly.
Claim 7
Dependent Claim
18 words
Apparatus of the type claimed in claim 5 wherein said reed switch assembly includes an encapsulated reed switch.
Claim 8
Dependent Claim
49 words
Apparatus of the type claimed in claim 6 wherein said means for maintaining said first alarm control element within a predetermined distance of the surface of the water in said pool comprises a plurality of floating devices to provide stability for said element near said surface of said water.
Claim 9
Dependent Claim
22 words
Apparatus of the type claimed in claim 7 wherein said plurality of floating devices are equally spaced from said alarm control elements.
Claim 10
Dependent Claim
46 words
Apparatus of the type claimed in claim 8 wherein said reed switch is controlled by said permanent magnet to complete an alarm circuit, and wherein said alarm circuit is maintained by the magnetic coupling between said reed switch assembly and said permanent magnet until manually disengaged.
Claim 11
Dependent Claim
44 words
Apparatus of the type claimed in claim 7 wherein said first control element is vertically movable with respect to said first control element and wherein the initial position of said first control element is adjustable to control the sensitivity of said pool alarm apparatus.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |