Patent US3333620A successfully refreshed from Google Patents.
US3333620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame quenching air shutter for gas burners
Assignee: Adams Manufacturing Corp
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Filing: 1966-08-16
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Granted: 1967-08-01
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Expires: 1986-08-16
Abstract
No abstract record available.
Inventors
- 👤 James A Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:57
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN COMBINATION WITH A FLUID GAS BURNER HAVING A MANIFOLD, INCLUDING A GAS DELIVERY ORIFICE, CONTAINED WITHIN THE AIR-MIXING BELL OF THE BURNER DUCT: (A) A HOLLOW, FRUSTO-CONICAL, AIR SHUTTER HAVING A GAS DISCHARGE OPENING CENTERED IN ITS APEX, MOUNTED COAXIALLY ON THE MANIFOLD, OVER THE ORIFICE THEREOF, WITH ITS GAS DISCHARGE OPENING LOCATED DOWNSTREAM OF THE MANIFOLD ORIFICE; (B) SAID AIR SHUTTER BEING MOVABLE LONGITUDINALLY OF THE MANIFOLD, BETWEEN ADJUSTED POSITIONS, TOWARD OR AWAY FROM THE CONICAL WALL OF THE AIR-MIXING BELL; (C) THE AIR SHUTTER ALSO HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED SLOTS CUT THROUGH THE WALL THEREOF WHICH INTERSECT ITS GAS DISCHARGE OPENING AND EXTEND AXIALLY OF THE AIR SHUTTER TOWARD ITS BASE END, STOPPING SHORT THEREOF.
Claim 2
Dependent Claim
120 words
IN COMBINATION WITH A FLUID GAS BURNER HAVING A MANIFOLD, INCLUDING A GAS DELIVERY ORIFICE, CONTAINED WITHIN THE AIR-MIXING BELL OF THE BURNER DUCT: (A) A HOLLOW, FRUSTO-CONICAL, AIR SHUTTER HAVING A GAS DISCHARGE OPENING CENTERED IN ITS APEX, MOUNTED COAXIALLY ON THE MANIFOLD, OVER THE ORIFICE THEREOF, WITH ITS GAS DISCHARGE OPENING LOCATED DOWNSTREAM OF THE MANIFOLD ORIFICE; (B) SAID AIR SHUTTER BEING MOVABLE LONGITUDINALLY OF THE MANIFOLD, BETWEEN ADJUSTED POSITIONS, TOWARD OR AWAY FROM THE CONICAL WALL OF THE AIR-MIXING BELL; (C) THE AIR SHUTTER ALSO HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED SLOTS CUT THROUGH THE WALL THEREOF WHICH INTERSECT ITS GAS DISCHARGE OPENING AND EXTEND AXIALLY OF THE AIR SHUTTER TOWARD ITS BASE END, STOPPING SHORT THEREOF.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |