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US3820744A Expired / Lapsed US ⏱️ 0.0 years remaining

Lighter than air aircraft

Assignee: Individual
•
Filing: 1973-03-12
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Granted: 1974-06-28
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Expires: 1993-03-12
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Abstract

Abstract A lighter-than-air aircraft of circular design having a vertically extending, central, hollow core of rigid material coaxially disposed within a horizontally disposed, annularly extending, rigid outer frame spaced outwardly of said core and positioned in a plane that is perpendicular to the vertical axis of said core and that intersects said core intermediate its upper and lower ends. An upper annular row of substantially equally tensioned elongated elements, such as wire ropes, strips or elements of similar strength, extend radially outwardly from the upper and lower ends of the core to said outer frames. Said elements will hereafter be generally called ''''wires'''' in the description and claims. The wires of said upper row extend convergently to said frame, the latter having a vertical dimension substantially less than the height of said core, and the ends of the wires of both rows are secured to said frame. An outer skin may cover said wires and extend outwardly of said frame to form an approximately circular, relatively sharp outer edge around the aircraft. Power actuated means are provided for driving the aircraft and for directionally manipulating it, with the interior of said aircraft between the rows of wires and wherever space is adequate, being filled with compartments or bags for gas, such as helium. Ballast, in the form of a payload is carried at the lower end of the hollow core.

Inventors

  • 👤 H Denton

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 22:58
CPC Classifications
B; B64; B64B; B64B1/00

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 214 words
A lighter-than-air aircraft, comprising: a. a vertically disposed, hollow, inner frame, and a horizonally disposed annular, hollow outer frame equally spaced around and coaxial with said inner frame; b. an upper and a lower annular row of wires respectively secured at one of their ends to the upper and lower ends of said inner frame and extending radially and convergently outwardly from said upper and lower ends to said outer frame and secured at their outer ends under tension to said outer frame; c. inflated bags of lighter-than-air gas between said upper and lower rows of wires; d. a cargo compartment at the lower end of said inner frame for holding cargo; e. impeller means carried by and outwardly of said outer frame for impelling said aircraft; f. an outer skin respectively above and below said upper and lower rows of wires secured to the upper and lower ends of said inner frame and extending convergently from said upper and lower ends to said outer frame and secured to the latter; g. said cargo compartment including a horizontal floor at the lower end of and supported by and rigid with said inner frame defining the bottom of space within the lower end portion of said inner frame for supporting cargo within said lower portion.
Claim 2
Dependent Claim 214 words
A lighter-than-air aircraft, comprising: a. a vertically disposed, hollow, inner frame, and a horizonally disposed annular, hollow outer frame equally spaced around and coaxial with said inner frame; b. an upper and a lower annular row of wires respectively secured at one of their ends to the upper and lower ends of said inner frame and extending radially and convergently outwardly from said upper and lower ends to said outer frame and secured at their outer ends under tension to said outer frame; c. inflated bags of lighter-than-air gas between said upper and lower rows of wires; d. a cargo compartment at the lower end of said inner frame for holding cargo; e. impeller means carried by and outwardly of said outer frame for impelling said aircraft; f. an outer skin respectively above and below said upper and lower rows of wires secured to the upper and lower ends of said inner frame and extending convergently from said upper and lower ends to said outer frame and secured to the latter; g. said cargo compartment including a horizontal floor at the lower end of and supported by and rigid with said inner frame defining the bottom of space within the lower end portion of said inner frame for supporting cargo within said lower portion.
Claim 3
Dependent Claim 36 words
In an aircraft as defined in claim 1: h. means respectively at one of the ends of the wires of said upper and lower rows for adjusting the tension on said wires relative to each other.
Claim 4
Dependent Claim 37 words
In an aircraft as defined in claim 1: h. rigid means extending between said inner and outer frames and between upper and lower rows of wires, for taking the upward thrust of said bags of inflated air.
Claim 5
Dependent Claim 36 words
In an aircraft as defined in claim 3: i. said outer skin extending past said outer frame and terminating in a relatively sharp circular outer edge radially outwardly of the latter relative to said inner frame.
Claim 6
Dependent Claim 49 words
In an aircraft as defined in claim 4: j. a horizontal platform at the upper end of said inner hollow frame; and k. an elevator within said hollow frame extending from said platform to said cargo compartment for carrying cargo from said platform to said compartment, and vice versa.
Claim 7
Dependent Claim 62 words
In an aircraft as defined in claim 5: l. said skin including a dome-like extension extending over said platform, and an upwardly directed opening therein for access to said platform from above; and m. closure means supported on said extension for movement from a closed position closing said opening to an open position to a side of said opening and vice versa.
Claim 8
Dependent Claim 27 words
In an aircraft as defined in claim 3: i. said outer frame being hollow and a plurality of bags inflated with lighter-than-air gas within said outer frame.
Claim 9
Dependent Claim 76 words
In an aircraft as defined in claim 7: j. said inner frame and said outer frame being of skeleton-like construction of structural metal including posts, struts and annular rings; and k. said impeller means being supported on said outer frame for variable movement about horizontal axes for impelling said aircraft upwardly and downwardly relative to a horizontal forward direction; and l. elevator and rudder means respectively at the lateral edges and rear edges of said aircraft.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-06-27 1977-12-27 1978-06-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-27 1981-12-27 1982-06-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-27 1985-12-27 1986-06-28 $7700.00 Window Closed / Lapsed

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