Seat

Details Seat Seat

2005-08-16

2005-08-16

Cuomo, Peter M. (Department: 3636)

Chairs and seats

Combined

With electrical feature

C297S330000, C297S423260, C297S354110

Reexamination Certificate

active

06929323

ABSTRACT:
There is provided a seat preventing the baggage or the like from being damaged. A leg rest strain gauge is provided on the bark surface of the leg rest frame on the proximal side. When a baggage is placed in the operating space of the leg rest in the bed position, and the leg rest is moved downward and is abutted against the baggage, the leg rest warps to form a convex on the upper surface in response to a reaction force from the baggage (a force in the direction opposite to the direction of the inclining movement of the leg rest). Therefore, the leg rest strain gauge expands, and thus the resistance and the gauged voltage value exceed the inclining direction determination value and the stoppage determination value. Consequently, the operation of the motor is stopped and the further downward movement of the leg rest is stopped. Therefore, the leg rest is prevented from pressurizing the baggage unnecessarily, thereby preventing the baggage from being damaged.

REFERENCES:
patent: 4669780 (1987-06-01), Sakakibara et al.
patent: 4819987 (1989-04-01), Stringer
patent: 5931532 (1999-08-01), Kemmerer et al.
patent: 6223467 (2001-05-01), Mahalek et al.
patent: 6267445 (2001-07-01), Marais
patent: 6373005 (2002-04-01), Griesbach et al.

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