USPC 244/48

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U.S. Patent Category 244/48 was for Airfoil incidence: Sustaining airfoils arranged so that the angle between their chord line and the line of thrust of the aircraft may be altered under operator control."

Category tree under USPC 244/34 which includes this classification:[1]

  • USPC 244/34 AIRCRAFT SUSTENTATION: Means to provide support, relative to the air, for an aircraft to which it is attached. See subclasses USPC 244/9, 19, 22, 27, and 70, for paddle wheels which may sustain as well as propel; and subclasses 11, 22, 28, and 72, for beating wings which may sustain as well as propel.
    • 35 Sustaining airfoils: Support providing means comprising an element, of the type commonly called a wing, plane, or blade, having a surface designed to be acted upon by a relatively moving stream of air to support the aircraft, a leading edge upstream and a trailing edge downstream, a theoretical chord line connecting the two edges, an upper surface when viewed planwise from above the chord line, and a lower surface when viewed planwise from below the chord line. This subclass contains airfoils in which the novelty is in the shape of the individual airfoil, either in cross-section or in plan view. Subclass 45 is devoted to the arrangement of airfoils, with respect to each other or to the body upon which they are mounted, but which contains many incidental disclosures of airfoils of unusual shape. See subclasses USPC 244/123.1 through USPC 244/124 for the construction of airfoils such as internal bracing.
      • 36 Lifting fuselages: Airplane fuselages having a shape which permits them to act as sustaining airfoils.
      • 37 Lifting struts: Bracing struts on aircraft constructed and arranged to act as sustaining airfoils. See class 52, Static Structures (e.g., Buildings), subclass 84 for streamlined building components.
      • 38 Resiliently mounted: Sustaining airfoils attached to aircraft by such devices as springs, elastic cables, etc.
      • 39 Rotatable: Sustaining airfoils rotatable or capable of being moved in a rotary path with respect to the aircraft. For arrangements of autorotating airfoils on aircraft, including hub structure for permitting autorotation, see USPC 244/17.11+
      • 45 Arrangement: Relative arrangements between a plurality of sustaining airfoils or between one or more airfoils and the body or fuselage. The particular shape of individual airfoils is found in USPC 244/35.
        • 46 Variable: Arrangements of sustaining airfoils having provision for altering the arrangement at will or in response to changing conditions, including combinations of specific types of variable arrangement individually classified below.
          • 47 Dihedral: Sustaining airfoils so arranged that the dihedral angle of the wing surfaces on opposite sides of the aircraft may be altered at will or in response to changing conditions. See also USPC 244/38.
          • 48 Incidence: Sustaining airfoils so arranged that the angle between their chord line and the line of thrust of the aircraft may be altered at will, or in response to changing conditions. Sustaining airfoils tilting from a horizontal to a vertical plane together with similarly tilting propellers to change from an airplane to helicopter operation are found in 244/7.
          • 49 Folding: Sustaining airfoils arranged so that they may be folded to require less space in storage of the aircraft, or for similar purposes. Airfoils which are folded or otherwise reduced in area during flight to vary their sustaining effect, are found in USPC 244/218. Airfoil construction to provide for the detaching of a portion of the airfoil is found in USPC 244/124.

References

  1. ↑ https://www.uspto.gov/web/patents/classification/uspc244/defs244.htm#C244S034000

This wiki has 50 patents in category "USPC 244/48".

Patents in category USPC 244/48


Enclosing categories USPC 244/46, USPC 244/45
Subcategories
Keywords Airfoil, Aileron
Start year
End year
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