Vehicle passenger seat

Details Vehicle passenger seat Vehicle passenger seat

2001-09-04

2003-05-20

Brown, Peter R. (Department: 3636)

Chairs and seats

Crash seat

Bottom and back movable as unit in response to force

C297S216100, C297S216190, C297S216200, C244S12200B

Reexamination Certificate

active

06565151

ABSTRACT:

FIELD
This invention relates to a passenger seat for a vehicle such as an aircraft and more particularly to a leg assembly for such a passenger seat, comprising a front foot, a leg frame mounted on the front foot and having spaced support surfaces for engaging with transverse members of the seat, a rear foot, and a load-limiting rear leg extending from the rear foot to an intermediate point on the leg frame so as to inhibit angular movement of the leg frame about the front foot.
RELATED ART
Passenger seats in aircraft are commonly attached to the floor of the aircraft using attachment fittings that are mounted in longitudinal tracks in the floor of the aircraft. When such an aircraft is subject to sudden deceleration, for example during crash, the seats tend to pivot about their front attachment points, applying a considerable load to the tracks at their rear attachment points. Recently, it has been found that such rear attachment points are subject to a dynamic load which is substantially greater than was provided for during the design of many aircraft currently in service. Accordingly, seats of the type described above have been designed to reduce the maximum level of such dynamic load by providing a degree of shock absorption.
U.S. Pat. No. 5,730,492 describes a seat of this type in which the load-limiting.rear leg comprises a load-limiting strut extending from the rear foot to said intermediate point on the leg frame. This strut yields when subject to a load exceeding a predetermined value, allowing the seat to pivot forwardly about its front feet. When the strut has extended to its maximum length, it is subject to the full load between the leg frame and the rear foot. It is an object of the invention to avoid applying this load directly to the load-limiting strut.
SUMMARY OF THE INVENTION
According to the invention, in a leg assembly of the type described above, the rear leg comprises a first link pivotally connected at a first end to the rear foot, a second link pivotally connected at a first end to said intermediate point on the leg frame and a load-limiting strut pivotally connected at a first end to the front foot and pivotally connected at a second end to both the second end of the first link and the second end of the second link so as to resist movement of the first and second links into alignment with each other.


REFERENCES:
patent: 2933127 (1960-07-01), Brewster
patent: 3460791 (1969-08-01), Judd
patent: 3603638 (1971-09-01), McGregor et al.
patent: 4349167 (1982-09-01), Reilly
patent: 4440441 (1984-04-01), Marrujo et al.
patent: 4487383 (1984-12-01), Mazelsky
patent: 4630864 (1986-12-01), Toll
patent: 4861103 (1989-08-01), Vallee
patent: 4911381 (1990-03-01), Cannon et al.
patent: 5152578 (1992-10-01), Kiguchi
patent: 5338090 (1994-08-01), Simpson et al.
patent: 5454622 (1995-10-01), Demopoulos
patent: 5499783 (1996-03-01), Marechal
patent: 5657950 (1997-08-01), Han et al.
patent: 5730492 (1998-03-01), Warrick et al.
patent: 6257663 (2001-07-01), Swierczewski
patent: 6312050 (2001-11-01), Eklind
patent: 6334643 (2002-01-01), Linblad et al.
patent: 6406092 (2002-06-01), Cordes et al.
patent: 35 33 132 (1987-03-01), None
patent: 1 259 198 (1972-01-01), None
patent: 2243540 (1991-11-01), None
patent: 92/05072 (1992-04-01), None

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