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US3117751A Expired / Lapsed US ⏱️ 0.0 years remaining

Means for removing boundary layer air from aircraft

Assignee: Northrop Grumman Corp
•
Filing: 1961-12-01
•
Granted: 1964-01-14
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Expires: 1981-12-01
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Abstract

No abstract record available.

Inventors

  • 👤 Kenneth H Rogers
  • 👤 Pfenninger Werner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 01:45
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/02; B64C21/06; B64C2230/00; B64C2230/04; Y; Y02; Y02T; Y02T50/00; Y02T50/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 235 words
IN AN AIRCRAFT STRUCTURAL ASSEMBLY INCORPORATING MEANS FOR REMOVING BOUNDARY LAYER AIR THEREFROM, THE COMBINATION COMPRISING: A FIRST SHEET MEMBER CONSITITUTING THE OUTERMOST MEMBER OF SAID ASSEMBLY AND OVER WHICH AIR FLOWS AT SUCH TIMES AS SAID ASSEMBLY IS IN MOTION; A SECOND SHEET MEMBER; MEANS SECURING SAID SHEET MEMBERS TOGETHER IN SAID ASSEMBLY IN SPACED PARALLEL RELATION SO THAT SAID SECOND SHEET MEMBER IS POSITIONED INWARDLY OF SAID FIRST SHEET MEMBER; PASSAGE MEANS HAVING INNER AND OUTER ENDS OPENING ON SAID SECOND AND FIRST SHEET MEMBERS, RESPECTIVELY; THE INNER ENDS OF SAID PASSAGE MEANS CONSTITUTING ROWS OF BORES HAVING A PARALLEL RELATION AND EXTENDING THROUGHOUT THE EXTENT OF SAID SECOND SHEET MEMBER; A THIRD SHEET MEMBER; MEMBERS NON-PERVIOUS TO AIR SECURING SAID THIRD SHEET MEMBER IN SAID ASSEMBLY INBOARD OF AND IN SPACED PARALLEL RELATION WITH RESPECT TO SAID SECOND SHEET MEMBER; SAID NON-PERVIOUS MEMBERS AND SECOND AND THIRD SHEET MEMBERS COOPERATING TO DEFINE A MAIN SUCTION DUCT EXTENDING PARALLEL TO AND SPANNING AT LEAST ONE OF SAID ROWS OF BORES; SHAPED SHEET MEMBERS SECURED IN FLUID TIGHT RELATION TO THE INNER SURFACE OF SAID SECOND SHEET MEMBER PROVIDING A PLURALITY OF INDIVIDUAL TRIBUTARY DUCTS; SAID SHAPED SHEET MEMBERS SPANNING EACH OF SAID ROWS OF BORES; AND EACH OF SAID SHAPED SHEET MEMBERS DEFINING A NOZZLE ADAPTED TO METER AND DIRECT THE FLOW OF AIR THROUGH SAID PASSAGE MEANS AND FROM SAID TRIBUTARY DUCTS.
Claim 2
Dependent Claim 235 words
IN AN AIRCRAFT STRUCTURAL ASSEMBLY INCORPORATING MEANS FOR REMOVING BOUNDARY LAYER AIR THEREFROM, THE COMBINATION COMPRISING: A FIRST SHEET MEMBER CONSITITUTING THE OUTERMOST MEMBER OF SAID ASSEMBLY AND OVER WHICH AIR FLOWS AT SUCH TIMES AS SAID ASSEMBLY IS IN MOTION; A SECOND SHEET MEMBER; MEANS SECURING SAID SHEET MEMBERS TOGETHER IN SAID ASSEMBLY IN SPACED PARALLEL RELATION SO THAT SAID SECOND SHEET MEMBER IS POSITIONED INWARDLY OF SAID FIRST SHEET MEMBER; PASSAGE MEANS HAVING INNER AND OUTER ENDS OPENING ON SAID SECOND AND FIRST SHEET MEMBERS, RESPECTIVELY; THE INNER ENDS OF SAID PASSAGE MEANS CONSTITUTING ROWS OF BORES HAVING A PARALLEL RELATION AND EXTENDING THROUGHOUT THE EXTENT OF SAID SECOND SHEET MEMBER; A THIRD SHEET MEMBER; MEMBERS NON-PERVIOUS TO AIR SECURING SAID THIRD SHEET MEMBER IN SAID ASSEMBLY INBOARD OF AND IN SPACED PARALLEL RELATION WITH RESPECT TO SAID SECOND SHEET MEMBER; SAID NON-PERVIOUS MEMBERS AND SECOND AND THIRD SHEET MEMBERS COOPERATING TO DEFINE A MAIN SUCTION DUCT EXTENDING PARALLEL TO AND SPANNING AT LEAST ONE OF SAID ROWS OF BORES; SHAPED SHEET MEMBERS SECURED IN FLUID TIGHT RELATION TO THE INNER SURFACE OF SAID SECOND SHEET MEMBER PROVIDING A PLURALITY OF INDIVIDUAL TRIBUTARY DUCTS; SAID SHAPED SHEET MEMBERS SPANNING EACH OF SAID ROWS OF BORES; AND EACH OF SAID SHAPED SHEET MEMBERS DEFINING A NOZZLE ADAPTED TO METER AND DIRECT THE FLOW OF AIR THROUGH SAID PASSAGE MEANS AND FROM SAID TRIBUTARY DUCTS.

References Cited (Backward Citations)

US1907160A Cited
US2337787A Cited
US2742247A Cited
US2873931A Cited
US2925231A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1967-01-13 1967-07-15 1968-01-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1971-01-13 1971-07-15 1972-01-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1975-01-13 1975-07-15 1976-01-14 $7700.00 Window Closed / Lapsed

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