US4218035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-supine aircrew ejection seat
Assignee: BAE Systems PLC
•
Filing: 1978-02-08
•
Granted: 1980-08-19
•
Expires: 1998-02-08
Abstract
Abstract A reclining or semi-supine aircrew ejection seat is provided with an ejection gun that is in the usual upwardly extending and rearwardly inclined attitude, and the seat is attached to the portion of the gun assembly that leaves the aircraft by a pivotal connection between the back of the seat and the upper part of the gun assembly portion. This allows the part of the seat that supports the user's back to extend forward away from the pivotal connection and the gun assembly. During the initial phase of ejection, the seat turns angularly, bringing the part of the seat that supports the user's back against the gun assembly.
Inventors
- 👤 William I. D. Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:14
CPC Classifications
B; B64; B64D; B64D25/00; B64D25/08; B64D25/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
177 words
A semi-supine aircrew ejection seat, comprising an ejection gun to be installed extending in an upwardly and rearwardly inclined attitude with an inclination which is constant for all seat positions and having two telescopically-sliding parts a first of which remains anchored in the aircraft while the second leaves the aircraft in an upward and rearward direction on ejection, and a seat assembly having lower and upper portions which support the seat and back respectively of the user and the upper portion of which is connected by a pivotal connection to said second part of said ejection gun so as to be angularly movable relatively thereto, said upper seat portion, in the installed position, extending from said pivotal connection in a downward and forward direction away fron said gun at an acute angle thereto, whereby during the initial phase of ejection angular movement of the seat assembly about said pivotal connection as said second part of said ejection gun slides relatively to said first part automatically brings said lower portion of said seat assembly rearward towards said gun.
Claim 2
Dependent Claim
177 words
A semi-supine aircrew ejection seat, comprising an ejection gun to be installed extending in an upwardly and rearwardly inclined attitude with an inclination which is constant for all seat positions and having two telescopically-sliding parts a first of which remains anchored in the aircraft while the second leaves the aircraft in an upward and rearward direction on ejection, and a seat assembly having lower and upper portions which support the seat and back respectively of the user and the upper portion of which is connected by a pivotal connection to said second part of said ejection gun so as to be angularly movable relatively thereto, said upper seat portion, in the installed position, extending from said pivotal connection in a downward and forward direction away fron said gun at an acute angle thereto, whereby during the initial phase of ejection angular movement of the seat assembly about said pivotal connection as said second part of said ejection gun slides relatively to said first part automatically brings said lower portion of said seat assembly rearward towards said gun.
Claim 3
Dependent Claim
44 words
A seat according to claim 1, wherein the ejection gun is flanked by frame members extending parallel to the gun, and during the initial phase of ejection the angular movement of the seat brings said upper portion of the seat against said frame members.
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) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |