Importance

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Abstract

A height adjusting device for a vehicle seat which has a function of moving a front part of the seat up and down to set up a desired inclination of the seat and a function of moving both the front and rear parts of the seat up and down to adjust the level of the whole seat. A clutch mechanism for coupling and uncoupling a lifter adjustment input member and a height adjustment input member is actuated by a control member which is adapted to rotate the lifter adjustment input member. When the clutch mechanism is uncoupled and the lifter adjustment input member is rotated, only that input member is rotated to raise or lower only the front part of the seat. When the clutch mechanism is coupled and the lifter adjustment input member is rotated, the height adjustment input member is rotated together with the lifter adjustment input member to raise or lower both the front and rear parts of the seat. Lifter adjustment and height adjustment are accomplished as desired merely by manipulating the single control member.

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First Claim