US3194296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Honeywell Inc
•
Filing: 1963-07-26
•
Granted: 1965-07-13
•
Expires: 1983-07-26
Abstract
No abstract record available.
Inventors
- 👤 Richard W Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:42
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/22; F23N5/02; F23N5/12; F23N5/123; G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2876; F23N2227/00; F23N2227/22; F23N2227/26; F23N2231/00; F23N2231/18; F23N2231/20; F23N2235/00; F23N2235/12; F23N2235/18; F23N2235/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
312 words
FUEL LEAK DETECTING APPARATUS COMPRISING: A FUEL BURNER UNIT, A FUEL CONDUIT CONNECTED BETWEEN THE FUEL BURNER UNIT AND A SOURCE OF FUEL, A MAIN FUEL VALVE CONNECTE IN THE FUEL CONDUIT AND ADAPTED TO ADMIT FUEL TO THE FUEL BURNER UNIT ONLY DURING PERIODS OF A NEED FOR OPERATION OF THE FUEL BURNER UNIT, A CONTROLLER OPERABLE TO DETERMINE THE PERIODS OF A NEED FOR OPERATION OF THE FUEL BURNER UNIT, A FIRST PILOT BURNER HAVING FIRST FLAM E SENSING MEANS COOPERATING THEREWITH TO SENSE THE PRESENCE OR ABSENCE OF FLAME, A SAFETY PILOT VALVE CONNECTED BETWEEN THE FUEL CONDUIT AND SAID FIRST PILOT BURNER, CONTROLLED BY SAID FIRST FLAME SENSING MEANS TO ALLOW FUEL TO FLOW TO SAID FIRST PILOT BURNER SO LONG AS FLANE IS SENSED THEREAT, A SECOND PILOT BURNER HAVING SECONG SENSING MEANS COOPERATING THEREWITH TO SENSE THE PRESENCE OR ABSENCE OF FLAME, SAID SECOND PILOT BURNER BEING ADAPTED TO BE MOUNTED IN COOPERATION RELATION TO SAID FIRST PILOT BURNER SO THAT FUEL AT SAID SECOND PILOT BURNER IS IGNITED BY FLAME AT SAID FIRST PILOT BURNER, MEANS INCLUDING A FURTHER VALVE ADAPTED TO BE CONNECTED TO THE FUEL CONDUIT AT A POSITION DOWNSTREAM FROM THE MAIN VALVE AND TO BE CONNECTED TO SAID SECOND PILOT BURNER TO ADMIT FUEL AT SAID POSITION DOWNSTREAM TO SAID SECOND PILOT BURNER, MEANS ADAPTED TO BE CONTROLED BY THE CONTROLLER AND BY SAID FIRST FLAME SENSING MEANS TO CAUSE SAID FURTHER VALVE TO OPEN ONLY WHEN FLAME IS SENSED AT SAID FIRST PILOT BURNER DURING A PERIOD WHEN THERE IS NO NEED FOR OPERATION OF THE FUEL BURNER UNIT, AND MEANS CONTROLLED BY SAID SECOND FLAME SENSING MEANS TO PREVENT FUEL FLOW TO THE FUEL BURNER UNIT IN THE EVENT OF A FUEL LEAK AT THE MAIN VALVE AS EVIDENCED BY THE PRESENCE OF FLAME AT SAID SECOND PILOT BURNER.
Claim 2
Dependent Claim
312 words
FUEL LEAK DETECTING APPARATUS COMPRISING: A FUEL BURNER UNIT, A FUEL CONDUIT CONNECTED BETWEEN THE FUEL BURNER UNIT AND A SOURCE OF FUEL, A MAIN FUEL VALVE CONNECTE IN THE FUEL CONDUIT AND ADAPTED TO ADMIT FUEL TO THE FUEL BURNER UNIT ONLY DURING PERIODS OF A NEED FOR OPERATION OF THE FUEL BURNER UNIT, A CONTROLLER OPERABLE TO DETERMINE THE PERIODS OF A NEED FOR OPERATION OF THE FUEL BURNER UNIT, A FIRST PILOT BURNER HAVING FIRST FLAM E SENSING MEANS COOPERATING THEREWITH TO SENSE THE PRESENCE OR ABSENCE OF FLAME, A SAFETY PILOT VALVE CONNECTED BETWEEN THE FUEL CONDUIT AND SAID FIRST PILOT BURNER, CONTROLLED BY SAID FIRST FLAME SENSING MEANS TO ALLOW FUEL TO FLOW TO SAID FIRST PILOT BURNER SO LONG AS FLANE IS SENSED THEREAT, A SECOND PILOT BURNER HAVING SECONG SENSING MEANS COOPERATING THEREWITH TO SENSE THE PRESENCE OR ABSENCE OF FLAME, SAID SECOND PILOT BURNER BEING ADAPTED TO BE MOUNTED IN COOPERATION RELATION TO SAID FIRST PILOT BURNER SO THAT FUEL AT SAID SECOND PILOT BURNER IS IGNITED BY FLAME AT SAID FIRST PILOT BURNER, MEANS INCLUDING A FURTHER VALVE ADAPTED TO BE CONNECTED TO THE FUEL CONDUIT AT A POSITION DOWNSTREAM FROM THE MAIN VALVE AND TO BE CONNECTED TO SAID SECOND PILOT BURNER TO ADMIT FUEL AT SAID POSITION DOWNSTREAM TO SAID SECOND PILOT BURNER, MEANS ADAPTED TO BE CONTROLED BY THE CONTROLLER AND BY SAID FIRST FLAME SENSING MEANS TO CAUSE SAID FURTHER VALVE TO OPEN ONLY WHEN FLAME IS SENSED AT SAID FIRST PILOT BURNER DURING A PERIOD WHEN THERE IS NO NEED FOR OPERATION OF THE FUEL BURNER UNIT, AND MEANS CONTROLLED BY SAID SECOND FLAME SENSING MEANS TO PREVENT FUEL FLOW TO THE FUEL BURNER UNIT IN THE EVENT OF A FUEL LEAK AT THE MAIN VALVE AS EVIDENCED BY THE PRESENCE OF FLAME AT SAID SECOND PILOT BURNER.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |