Patent US3256900A successfully refreshed from Google Patents.
US3256900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic gas regulating system
Assignee: Union Carbide Corp
•
Filing: 1963-01-18
•
Granted: 1966-06-21
•
Expires: 1983-01-18
Abstract
No abstract record available.
Inventors
- 👤 Nelson N Estes
- 👤 Kenneth W Hannah
- 👤 Charlie D Anderson
- 👤 Charles L Eversole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:26
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/71; B01F35/717; B01F35/71805; B01F23/00; B01F23/10; B01F23/19; B01F23/191; B01F35/712; B01F35/714; G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/135; G05D11/138; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A REGULATOR FOR A DEPOLARIZER GAS IN A DEPOLARIZER GAS-INERT GAS MIXTURE WHICH COMPRISES A GALVANIC SENSING ELEMENT CONTAINING A PAIR OF ELECTRICALLY OPPOSED GASDEPOLARIZABLE CELLS, ONE OF WHICH IS ADAPTED FOR EXPOSURE TO SAID GAS MIXTURE AND THE OTHER TO A REFERENCE GAS CONTAINING A KNOWN AMOUNT OF SAID DEPLOARIZER GAS; CIRCUIT MEANS FOR SENSING THE POTENTIAL DIFFERENCE OF SAID CELLS AND FOR PRODUCING A PULSATING OUTPUT SIGNAL; MEANS FOR AMPLIFYING SAID PULSATING OUTPUT SIGNAL; A CONTROL VALVE RESPONSIVE TO THE AMPLIFIED SIGNAL; A DEPOLARIZER GAS SUPPLY IN COMMUNICATION WITH THE GAS INPUT SIDE OF SAID CONTROL VALVE; A REFERENCE GAS DELIVERY MEANS COMMUNICATION BETWEEN SAID DEPOLARIZER GAS SUPPLY AND SAID ONE OF SAID CELLS ADAPTED FOR EXPOSURE TO SAID REFERENCE GAS; AND A MIXING CHAMBER ADAPTED TO RECEIVE SAID DEPOLARIZER GAS-INERT GAS MIXTURE AND THE DEPOLARIZER GAS METERED THROUGH SAID CONTROL VALVE.
Claim 2
Dependent Claim
144 words
A REGULATOR FOR A DEPOLARIZER GAS IN A DEPOLARIZER GAS-INERT GAS MIXTURE WHICH COMPRISES A GALVANIC SENSING ELEMENT CONTAINING A PAIR OF ELECTRICALLY OPPOSED GASDEPOLARIZABLE CELLS, ONE OF WHICH IS ADAPTED FOR EXPOSURE TO SAID GAS MIXTURE AND THE OTHER TO A REFERENCE GAS CONTAINING A KNOWN AMOUNT OF SAID DEPLOARIZER GAS; CIRCUIT MEANS FOR SENSING THE POTENTIAL DIFFERENCE OF SAID CELLS AND FOR PRODUCING A PULSATING OUTPUT SIGNAL; MEANS FOR AMPLIFYING SAID PULSATING OUTPUT SIGNAL; A CONTROL VALVE RESPONSIVE TO THE AMPLIFIED SIGNAL; A DEPOLARIZER GAS SUPPLY IN COMMUNICATION WITH THE GAS INPUT SIDE OF SAID CONTROL VALVE; A REFERENCE GAS DELIVERY MEANS COMMUNICATION BETWEEN SAID DEPOLARIZER GAS SUPPLY AND SAID ONE OF SAID CELLS ADAPTED FOR EXPOSURE TO SAID REFERENCE GAS; AND A MIXING CHAMBER ADAPTED TO RECEIVE SAID DEPOLARIZER GAS-INERT GAS MIXTURE AND THE DEPOLARIZER GAS METERED THROUGH SAID CONTROL VALVE.
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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |