Patent US3849921A successfully refreshed from Google Patents.
US3849921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane-mounted sign
Assignee: Individual
•
Filing: 1973-12-14
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Granted: 1974-11-26
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Expires: 1993-12-14
Abstract
Abstract A structure suspended from an aircraft for carrying an advertising sign. The structure consists of a frame connected to the aircraft wings by link bars and universal joints and rigidly connected at its center portion to the aircraft fuselage. The link bars permit free horizontal movement of the side portions of the frame to prevent drag loads from being transmitted to the wings, allowing the wings to flex in a normal manner. The frame has diagonal brace wires which transmits the drag loads to the fuselage. Ballast weights may be added to the forward or rearward ends of the frame to provide a desirable location of the frame center of gravity line relative to the wings.
Inventors
- 👤 G Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:41
CPC Classifications
G; G09; G09F; G09F21/00; G09F21/06; G09F21/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
A load-supporting frame assembly for use with an aircraft having laterally extending wings, said assembly comprising: a. a frame located below said wings, b. connecting means rigidly supporting a first portion of said frame on said aircraft, c. suspension means spaced from said connecting means and swingably supporting a second portion of said frame remote from said first portion to prevent horizontal forces from being imposed upon the wings, d. said connecting means and suspension means cooperating to permit substantially normal flexure of said wings.
Claim 2
Dependent Claim
85 words
A load-supporting frame assembly for use with an aircraft having laterally extending wings, said assembly comprising: a. a frame located below said wings, b. connecting means rigidly supporting a first portion of said frame on said aircraft, c. suspension means spaced from said connecting means and swingably supporting a second portion of said frame remote from said first portion to prevent horizontal forces from being imposed upon the wings, d. said connecting means and suspension means cooperating to permit substantially normal flexure of said wings.
Claim 3
Dependent Claim
35 words
The assembly of claim 1, and wherein the suspension means comprises a plurality of link members pivotally connected at their top portions to the wings and pivotally connected at their bottom portions to the frame.
Claim 4
Dependent Claim
18 words
The assembly of claim 2, and wherein the pivotal connections of the link members comprise universal joint assemblies.
Claim 5
Dependent Claim
30 words
The assembly of claim 1, and wherein said frame comprises a plurality of spaced longitudinal beam members and a plurality of spaced cross members connected to said longitudinal beam members.
Claim 6
Dependent Claim
29 words
The assembly of claim 4, and diagonal strut members interconnecting spaced portions of said frame and being arranged to transmit horizontal forces Acting on the frame to the aircraft.
Claim 7
Dependent Claim
25 words
The assembly of claim 5, and wherein said strut members comprise flexible cable elements diagonally interconnecting intersections of said longitudinal beam members and cross members.
Claim 8
Dependent Claim
27 words
The assembly of claim 1, and ballast means on the frame arranged to locate the center-of-gravity of the frame adjacent to the aerodynamic center of the wings.
Claim 9
Dependent Claim
31 words
The assembly of claim 7, and wherein the frame includes a plurality of transversely spaced longitudinal beam members having extensions and wherein said ballast means comprises weights mounted on said extensions.
Claim 10
Dependent Claim
19 words
The assembly of claim 8, and wherein said extensions are located at the ends of said longitudinal beam members.
Claim 11
Dependent Claim
34 words
The assembly of claim 1, and wherein the connecting means comprises a depending substantially rectangular truss assembly rigidly connecting at its top portion to the aircraft and at its bottom portion to the frame.
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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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |