US3176844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Honeywell Inc
•
Filing: 1961-03-14
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Granted: 1965-04-06
•
Expires: 1981-03-14
Abstract
No abstract record available.
Inventors
- 👤 David E Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:59
CPC Classifications
G; G05; G05D; G05D27/00; G05D27/02; B; B01; B01J; B01J49/00; B01J49/80; B01J49/85
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A CONTROL SYSTEM FOR CONTROLLING THE REGENERATION OPERATION OF A WATER SOFTNER WHEREIN AN ION EXCHANGE MATERIAL WHICH CHANGES IN IMPEDANCE IS USED TO SOFTEN WATER AS WATER PASSES THERETHROUGH, AN ELECTRICAL NETWORK CIRCUIT HAVING TWO BRANCHES AND AN OUTPUT CIRCUIT WHICH HAS AN OUTPUT SIGNAL DEPENDING UPON THE RELATION OF THE IMPEDANCE OF SAID BRANCHES, FIRST AND SECOND ELECTRODES MOUNTED IN THE ION EXCHANGE MATERIAL AND WATER OF THE WATER SOFTENER TO BE RESPONSIVE TO THE IMPEDANCE OF THE ION EXCHANGE MATERIAL AND THE WATER IN THE SOFTENER, MEANS CONNECTING SAID FIRST AND SECOND ELECTRODES IN SAID FIRST BRANCH, A THIRD ELECTRODE MOUNTED IN A CHAMBER CONNECTED TO CONTAIN ONLY WATER FROM THE SOFTENER, SAID SECOND AND THIRD ELECTRODES BEING RESPONSIVE TO THE IMPEDANCE OF THE WATER IN THE SOFTENER, SAID FIRST ELECTRODE HAVING A SMALLER AREA THAN SAID THIRD ELECTRODE, A TEMPERATURE RESPONSIVE MEANS HAVING AN IMPEDANCE WHICH VARIES WITH TEMPERATURE, SAID TEMPERATURE RESPONSIVE MEANS BEING MOUNTED TO RESPOND TO THE TEMPERATURE OF THE WATER AND
Claim 2
Dependent Claim
169 words
IN A CONTROL SYSTEM FOR CONTROLLING THE REGENERATION OPERATION OF A WATER SOFTNER WHEREIN AN ION EXCHANGE MATERIAL WHICH CHANGES IN IMPEDANCE IS USED TO SOFTEN WATER AS WATER PASSES THERETHROUGH, AN ELECTRICAL NETWORK CIRCUIT HAVING TWO BRANCHES AND AN OUTPUT CIRCUIT WHICH HAS AN OUTPUT SIGNAL DEPENDING UPON THE RELATION OF THE IMPEDANCE OF SAID BRANCHES, FIRST AND SECOND ELECTRODES MOUNTED IN THE ION EXCHANGE MATERIAL AND WATER OF THE WATER SOFTENER TO BE RESPONSIVE TO THE IMPEDANCE OF THE ION EXCHANGE MATERIAL AND THE WATER IN THE SOFTENER, MEANS CONNECTING SAID FIRST AND SECOND ELECTRODES IN SAID FIRST BRANCH, A THIRD ELECTRODE MOUNTED IN A CHAMBER CONNECTED TO CONTAIN ONLY WATER FROM THE SOFTENER, SAID SECOND AND THIRD ELECTRODES BEING RESPONSIVE TO THE IMPEDANCE OF THE WATER IN THE SOFTENER, SAID FIRST ELECTRODE HAVING A SMALLER AREA THAN SAID THIRD ELECTRODE, A TEMPERATURE RESPONSIVE MEANS HAVING AN IMPEDANCE WHICH VARIES WITH TEMPERATURE, SAID TEMPERATURE RESPONSIVE MEANS BEING MOUNTED TO RESPOND TO THE TEMPERATURE OF THE WATER AND
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |