US3250392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water softener system control apparatus
Assignee: Honeywell Inc
•
Filing: 1964-02-17
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Granted: 1966-05-10
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 James R Luck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:48
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; B; B01; B01J; B01J47/00; B01J47/14; F; F22; F22D; F22D1/00; F22D1/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499; Y10T137/2509
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
A CONTROL DEVICE ADAPTED TO INITIATE A REGENERATION OPERATION FOR ION EXCHANGE MATERIAL IN A WATER SOFTENING SYSTEM COMPRISING, RIBBON SENSING MEANS CHANGING TO A PREDETERMINED LENGTH WHEN BEING EXPOSED TO HARD WATER, AND CONTROL MEANS CONNECTED TO SAID SENSING MEANS TO RESPOND TO SAID PREDETERMINED LENGTH.
References Cited (Backward Citations)
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US2921005A
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US2810692A
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US3172037A
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |