Chairs and seats – Movable back – Tiltable
Patent
1992-06-29
1993-11-30
Cuomo, Peter M.
Chairs and seats
Movable back
Tiltable
29737812, B60N 202
Patent
active
052659372
ABSTRACT:
An inertia responsive seat back lock mechanism for a pivotal back rest of a vehicle seat assembly is carried solely by a side arm on the back rest and includes a stop, a gravity biased inertia member pivotally connected to the side arm via an oversized opening and a lock bar pivotally and slidably connected to the side arm and having one end in engagement with the stationary cam on a seat cushion. The inertia member is normally biased in a locking position by the lock bar when the seat back is in its normal upright position. The lock mechanism provides a rapid lock up to prevent pivotal movement of the seat back upon rapid deceleration of the vehicle and in which the lock bar engages the inertia member and moves it against the lock stop to prevent further tilting movement. Due to the oversize pivotal connection between the inertia member and the side arm, only compression loads are exerted against the inertia member with the resultant force being substantially normal to the path or direction of tilting movement of the seat back.
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Cuomo Peter M.
General Motors Corporation
Milano Michael J.
Schuetz William A.
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