Patent US3396201A successfully refreshed from Google Patents.
Patent US3552568A successfully refreshed from Google Patents.
US3552568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pool chlorination
Assignee: Hydrotech Chemical Corp
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Filing: 1967-11-22
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Granted: 1971-01-05
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Expires: 1987-11-22
Abstract
Abstract Pool chlorination is effected safely and swiftly by discharging pressurized C12 into the pool water recirculation system from a pressure resistant container, suitably having a rupturable closure arranged for directionally controlled release of the C12 contents.
Inventors
- 👤 Charles E Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:13
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C02F1/763; E; E04; E04H; E04H4/00; E04H4/12; C02F2103/00; C02F2103/42; Y; Y10; Y10S; Y10S261/00; Y10S261/75; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
41 words
Apparatus according to claim 1 in which said closure comprises a container neck portion having a rupturable closure membrane and said container mounting means comprises a socket formed integrally with said body for receiving said container neck portion in sealing relation.
Claim 2
Dependent Claim
43 words
Apparatus according to claim 2 in which said closure-opening means comprises puncture means within said container-mounting socket arranged to puncture said container closure membrane, said puncture means having port means for passage of C12 gas from the container to said side inlet means.
Claim 3
Dependent Claim
41 words
Apparatus according to claim 1 including also a conduit through which the pool water recirculates and a pump for recirculating the water in the conduit said chlorine delivery means being connected across said conduit on the output side of said pump.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |