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US3620012A Expired / Lapsed US ⏱️ 0.0 years remaining

Gas turbine engine combustion equipment

Assignee: Rolls Royce PLC
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Filing: 1970-03-02
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Granted: 1971-11-16
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Expires: 1990-03-02
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Abstract

Abstract THE INVENTION CONCERNS GAS TURBINE ENGINE COMBUSTION EQUIPMENT COMPRISING AN ANNULAR CHAMBER, MEANS DEFINING A PLURALITY OF ALTERNATELY ARRANGED, RADIALLY EXTENDING, PRIMARY COMBUSTION ZONES AND DIFFUSING DILUTION AIR PASSAGES, SAID MEANS BEING MOUNTED WITHIN AN UPSTREAM PORTION OF THE FLAME TUBE, THE ANNULAR CHAMBER HAVING A DOWNSTREAM PORTION WITHIN WHICH MIXING IS EFFECTED BETWEEN THE COMBUSTION GASES FROM THE SAID ZONES AND THE DILUTION AIR FROM SAID PASSAGES, AND MEANS FOR SUPPLYING FUEL AND AIR TO EACH SAID ZONE, THE ANNULAR CHAMBER HAVING A DIFFUSING INLET DUCT WHICH SUPPLIES DILUTION AIR TO SAID PASSAGE AND A ROTATABLE ASSEMBLY OF VANES WHICH ARE LOCATED IN THE DIFFUSING INLET DUCT AND WHICH EFFECT DIFFUSION OF THE AIR THEREOVER.

Inventors

  • 👤 Geoffrey Light Wilde

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 14:34
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/16; F23R3/18; F23R3/20; F23R3/007; F23R3/28; F23R3/38; F23R3/42; F23R3/60

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-11-15 1975-05-17 1975-11-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-11-15 1979-05-17 1979-11-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-11-15 1983-05-17 1983-11-16 $7700.00 Window Closed / Lapsed

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