US3369558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas mixture proportioner
Assignee: Airco Inc
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Filing: 1965-08-30
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Granted: 1968-02-20
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Expires: 1985-08-30
Abstract
No abstract record available.
Inventors
- 👤 Howard G Hughey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:51
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2499
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
IN A GAS MIXTURE PROPORTIONER, IN COMBINATION, FIRST AND SECOND GAS SOURCES, SAID GAS SOURCES HAVING INDIVIDUAL ORIFICES RELATIVELY PROPORTIONED ACCORDING TO THE DESIRED GAS MIXTURE, INDIVIDUAL ELECTRICALLY CONTROLLED NORMALLY CLOSED SHUT-OFF VALVES FOR CONTROLLING THE PASSAGE OF GAS FROM THE RESPECTIVE GAS SOURCES THROUGH THE RESPECTIVE ORIFICES, INDIVIDUAL PRESSURE ACTUATED NORMALLY OPEN SWITCHES CONNECTED TO BE ACTUATED BY THE GAS PRESSURE IN THE RESPECTIVE GAS SOURCES, MEANS CONNECTED TO SAID SOURCES FOR MIXING THE OUTPUTS OF GAS FROM THE TWO SOURCES AND SUPPLYING THE GAS MIXTURE TO A STORAGE TANK, A PRESSURE ACTUATED NORMALLY CLOSED SWITCH CONNECTED TO BE ACTUATED BY THE GAS PRESSURE IN SAID STORAGE TANK, AND AN ELECTRIC CONTROL CIRCUIT SERIALLY CONNECTING SAID PLURALITY OF SHUT-OFF VALVES AND SAID PLURALITY OF PRESSURE ACTUATED SWITCHES, WHEREBY SAID SHUT-OFF VALVES ARE OPENED PROVIDED THE SAID NORMALLY OPEN SWITCHES ARE CLOSED BY SUFFICIENT PRESSURE IN BOTH SAID GAS SOURCES AND PROVIDED THE SAID NORMALLY CLOSED SWITCH IS NOT OPENED BY EXCESSIVE PRESSURE IN SAID STORAGE TANK, THEREBY MAINTAINING A CHARGE OF GAS IN THE STORAGE TANK, WHICH CHARGE COMPRISES A MIXTURE OF THE DESIRED PROPORTIONS AS DETERMINED BY THE SAID ORIFICES.
Claim 2
Dependent Claim
192 words
IN A GAS MIXTURE PROPORTIONER, IN COMBINATION, FIRST AND SECOND GAS SOURCES, SAID GAS SOURCES HAVING INDIVIDUAL ORIFICES RELATIVELY PROPORTIONED ACCORDING TO THE DESIRED GAS MIXTURE, INDIVIDUAL ELECTRICALLY CONTROLLED NORMALLY CLOSED SHUT-OFF VALVES FOR CONTROLLING THE PASSAGE OF GAS FROM THE RESPECTIVE GAS SOURCES THROUGH THE RESPECTIVE ORIFICES, INDIVIDUAL PRESSURE ACTUATED NORMALLY OPEN SWITCHES CONNECTED TO BE ACTUATED BY THE GAS PRESSURE IN THE RESPECTIVE GAS SOURCES, MEANS CONNECTED TO SAID SOURCES FOR MIXING THE OUTPUTS OF GAS FROM THE TWO SOURCES AND SUPPLYING THE GAS MIXTURE TO A STORAGE TANK, A PRESSURE ACTUATED NORMALLY CLOSED SWITCH CONNECTED TO BE ACTUATED BY THE GAS PRESSURE IN SAID STORAGE TANK, AND AN ELECTRIC CONTROL CIRCUIT SERIALLY CONNECTING SAID PLURALITY OF SHUT-OFF VALVES AND SAID PLURALITY OF PRESSURE ACTUATED SWITCHES, WHEREBY SAID SHUT-OFF VALVES ARE OPENED PROVIDED THE SAID NORMALLY OPEN SWITCHES ARE CLOSED BY SUFFICIENT PRESSURE IN BOTH SAID GAS SOURCES AND PROVIDED THE SAID NORMALLY CLOSED SWITCH IS NOT OPENED BY EXCESSIVE PRESSURE IN SAID STORAGE TANK, THEREBY MAINTAINING A CHARGE OF GAS IN THE STORAGE TANK, WHICH CHARGE COMPRISES A MIXTURE OF THE DESIRED PROPORTIONS AS DETERMINED BY THE SAID ORIFICES.
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |