Active control of a vehicle occupant's body in frontal collision

Details Active control of a vehicle occupant's body in frontal collision Active control of a vehicle occupant's body in frontal collision

1995-11-01

1997-05-06

Ellis, Christopher P.

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

Responsive to engagement of portion of perimeter of vehicle...

29721618, B60K 2810

Patent

active

056262035

ABSTRACT:
An active control of a vehicle occupant's body in a frontal collision including a double-acting hydraulic cylinder connected between a vehicle seat frame and a vehicle frame upon which the seat frame is slidabley mounted for movement in a longitudinal direction relative to the vehicle. The seat frame is releasably fixed to the vehicle frame by a solenoid actuated detent controlled by a microprocessor electrically connected to an accelerometer. A linear variable differential transformer measures the linear position of the seat and a rotary variable differential transformer measures the angular motion of the occupant's body. The transformers transmit signals to the microporcessor which in turn transmits signals responsive thereto to a directional control valve which controls the hydraulic fluid supplied to and exhausted from the double-acting hydraulic cylinder for controlling the forward sliding movement of the seat depending upon the severity of the impact level.

REFERENCES:
patent: 3992046 (1976-11-01), Braess
patent: 4232895 (1980-11-01), Yoshio et al.
patent: 5344204 (1994-09-01), Liu, Yanzhao

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