US3159203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot burner
Assignee: Robertshaw Controls Co
•
Filing: 1961-08-11
•
Granted: 1964-12-01
•
Expires: 1981-08-11
Abstract
No abstract record available.
Inventors
- 👤 Zulian Aldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:01
CPC Classifications
F; F23; F23Q; F23Q9/00; F23Q9/02; F23Q9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A SAFETY-CONTROL FOR A GASEOUS FUEL PILOT BURNER, MEANS DEFINING A CONSTANT FLAME ORIFICE CONNECTED BY A FIRST CONDUIT TO A CONSTANT FUEL SUPPLY, A CUPPED FLAME SPREADING ELEMENT HAVING SUBSTANTIALLY VERTICAL OUTER PERIPHERAL PORTIONS AND ARRANGED ACROSS AND PROXIMATE TO SAID ORIFICE AS A FLAME HOLDING DEVICE, AN AIR INJECTOR JET MEMBER CONNECTED TO AN INTERMITTENT FUEL SUPPLY, A SECOND CONDUIT ARRANGED COAXIALLY ADJACENT SAID JET MEMBER TO RECEIVE AERATED FUEL THEREFROM, SAID FIRST AND SECOND CONDUITS BEING CONCENTRICALLY ARRANGED ONE WITHIN THE OTHER, A LATERAL EXTENSION OF THE SECOND CONDUIT OPENING AT ONE SIDE OF SAID BURNER PROXIMATE TO SAID CONSTANT FLAME ORIFICE, FLAME-SPREADING HOOD MEANS ADJUSTABLY ATTACHED TO SAID FIRST CONDUIT FOR DIRECTING THE FLAME FROM SAID AERATED FUEL WHEN IGNITED BY THE CONSTANT FLAME, AND THERMALLY RESPONSIVE MEANS DISPOSED IN THE PATH OF SAID DIRECTED FLAME AS SAID INTERMITTENT SUPPLY IS ACTUATED.
Claim 2
Dependent Claim
147 words
IN A SAFETY-CONTROL FOR A GASEOUS FUEL PILOT BURNER, MEANS DEFINING A CONSTANT FLAME ORIFICE CONNECTED BY A FIRST CONDUIT TO A CONSTANT FUEL SUPPLY, A CUPPED FLAME SPREADING ELEMENT HAVING SUBSTANTIALLY VERTICAL OUTER PERIPHERAL PORTIONS AND ARRANGED ACROSS AND PROXIMATE TO SAID ORIFICE AS A FLAME HOLDING DEVICE, AN AIR INJECTOR JET MEMBER CONNECTED TO AN INTERMITTENT FUEL SUPPLY, A SECOND CONDUIT ARRANGED COAXIALLY ADJACENT SAID JET MEMBER TO RECEIVE AERATED FUEL THEREFROM, SAID FIRST AND SECOND CONDUITS BEING CONCENTRICALLY ARRANGED ONE WITHIN THE OTHER, A LATERAL EXTENSION OF THE SECOND CONDUIT OPENING AT ONE SIDE OF SAID BURNER PROXIMATE TO SAID CONSTANT FLAME ORIFICE, FLAME-SPREADING HOOD MEANS ADJUSTABLY ATTACHED TO SAID FIRST CONDUIT FOR DIRECTING THE FLAME FROM SAID AERATED FUEL WHEN IGNITED BY THE CONSTANT FLAME, AND THERMALLY RESPONSIVE MEANS DISPOSED IN THE PATH OF SAID DIRECTED FLAME AS SAID INTERMITTENT SUPPLY IS ACTUATED.
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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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |