Patent US4663554A successfully refreshed from Google Patents.
Patent US3591111A successfully refreshed from Google Patents.
US3591111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft loading door
Assignee: Individual
•
Filing: 1969-06-03
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Granted: 1971-07-06
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Expires: 1989-06-03
Abstract
Abstract An opening mechanism for an inclined aircraft door including an angular member pivoted to the aircraft fuselage and to the door inwardly of the door edge, so that power pivoting of the angular member causes pivoting opening movement of the door about an edge remote from said member until the door abuts the angular member and further pivoting of said member causes the latter and the door to move as a unit. The mechanism allows the door to fully clear the door opening and serves also to lock the door in closed position.
Inventors
- 👤 William G Spence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:45
CPC Classifications
B; B64; B64C; B64C1/00; B64C1/14; B64C1/1407; B64C1/1415
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
203 words
In an aircraft having a fuselage with an outside door opening therein, a door arranged to seal said opening from the inside of said fuselage, linking means connecting said door to the aircraft fuselage, and actuating means connected to both the linking means and the aircraft fuselage for closing and opening said door, said linking means including an angular member having one end pivoted to said fuselage and the other end pivoted to said door about a transversely extending pivot axis spaced inwardly from the edge of said door and said angular member having a portion overlapping said door, said actuating means being arranged to pivoT said member relative to said fuselage, said door is pivotally connected about said pivot axis and is arranged to be wholly suspended from said angular member, said pivot axis is located relative to said door to define a lighter door portion and an heavier door portion extending on opposite said of said pivot axis, said overlapping portion of said angular member overlying said lighter door portion, and the latter is constructed and arranged to abut said overlapping portion under the action of gravity on said heavier door portion when said door has been opened a predetermined amount.
Claim 2
Dependent Claim
203 words
In an aircraft having a fuselage with an outside door opening therein, a door arranged to seal said opening from the inside of said fuselage, linking means connecting said door to the aircraft fuselage, and actuating means connected to both the linking means and the aircraft fuselage for closing and opening said door, said linking means including an angular member having one end pivoted to said fuselage and the other end pivoted to said door about a transversely extending pivot axis spaced inwardly from the edge of said door and said angular member having a portion overlapping said door, said actuating means being arranged to pivoT said member relative to said fuselage, said door is pivotally connected about said pivot axis and is arranged to be wholly suspended from said angular member, said pivot axis is located relative to said door to define a lighter door portion and an heavier door portion extending on opposite said of said pivot axis, said overlapping portion of said angular member overlying said lighter door portion, and the latter is constructed and arranged to abut said overlapping portion under the action of gravity on said heavier door portion when said door has been opened a predetermined amount.
Claim 3
Dependent Claim
117 words
In an aircraft as claimed in claim 1, wherein said opening is made in an inclined overhanging portion of said fuselage and said angular member is pivoted to said fuselage at a point adjacent the top edge of said opening and to said door at a point spaced inwardly from the top edge of said door and above the center of gravity of said door, said angular member is pivotable in a substantially vertical plane when the aircraft is in a level upright position, whereby the proximate marginal zone of said door will abut against said angular member and be maintained in said abutting position under the action of gravity in the open position of said door.
Claim 4
Dependent Claim
32 words
In an aircraft as claimed in claim 2, wherein said actuating means include a hydraulic cylinder and piston unit of the double-acting type pivotally connected to the apex of said angular member.
Claim 5
Dependent Claim
33 words
In an aircraft as claimed in claim 3, wherein said angular member and said hydraulic cylinder and piston unit are wholly located within said fuselage, and said door opens inwardly of said fuselage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |