A chair has a supporting frame, a seat portion for supporting an occupant, and a back portion for supporting the back of a seated occupant. The portion is reclinable relative to the supporting frame between a generally upright position and a generally reclined position. A preference control is opera
A chair has a supporting frame, a seat portion for supporting an occupant, and a back portion for supporting the back of a seated occupant. The portion is reclinable relative to the supporting frame between a generally upright position and a generally reclined position. A preference control is operatively engaged between the back portion and a chair component, wherein displacement of the back portion toward the generally reclined position causes displacement of the chair component. The preference control is adjustable to vary the amount of displacement of the chair component caused by a given amount of displacement of the back portion toward the generally reclined position.
대표청구항▼
1. A chair comprising: a supporting frame;a seat portion for supporting an occupant; anda back portion for supporting the back of a seated occupant, the back portion being reclinable relative to the supporting frame between a generally upright position and a generally reclined position; anda prefere
1. A chair comprising: a supporting frame;a seat portion for supporting an occupant; anda back portion for supporting the back of a seated occupant, the back portion being reclinable relative to the supporting frame between a generally upright position and a generally reclined position; anda preference control operatively engaged between the back portion and the seat portion, wherein displacement of the back portion toward the generally reclined position causes displacement of the seat portion, and the preference control is adjustable to vary the amount of displacement of the seat portion caused by a given amount of displacement of the back portion toward the generally reclined position;wherein the chair comprises a recline mechanism configured to move substantially the entire seat portion upon a reclining action of the back portion toward the generally reclined position, with the preference control incorporated into the recline mechanism, wherein the recline mechanism is configured to lift substantially the entire seat portion upon a reclining action of the back portion toward the generally reclined position. 2. A chair as claimed in claim 1, wherein the preference control provides a maximum mechanical advantage setting and a minimum mechanical advantage setting for the back portion. 3. A chair as claimed in claim 2, wherein the preference control provides at least one intermediate mechanical advantage setting for the back portion. 4. A chair as claimed in claim 3, wherein the preference control provides at least two intermediate mechanical advantage settings for the back portion. 5. A chair as claimed in claim 1, comprising at least one actuator that enables a user to select a desired mechanical advantage of the back portion. 6. A chair comprising: a supporting frame;a seat portion for supporting an occupant; anda back portion for supporting the back of a seated occupant, the back portion being reclinable relative to the supporting frame between a generally upright position and a generally reclined position; anda preference control operatively engaged between the back portion and a chair component, wherein displacement of the back portion toward the generally reclined position causes displacement of the chair component, and the preference control is adjustable to vary the amount of displacement of the chair component caused by a given amount of displacement of the back portion toward the generally reclined position,and wherein the preference control comprises a preference block that is articulated to the supporting frame and is articulated to the back portion, and is operatively connected to the chair component;wherein said chair component is the seat portion, and wherein the chair comprises a recline mechanism configured to move the seat portion upwardly upon a reclining action of the back portion, with the preference control incorporated into the recline mechanism. 7. A chair as claimed in claim 6, wherein the preference block is pivoted to the supporting frame of the chair and is pivoted to the back portion of the chair. 8. A chair as claimed in claim 7, comprising a preference pin that provides the pivoting of the preference block to the back portion of the chair. 9. A chair as claimed in claim 6, wherein the articulation of the preference block to the chair is spaced from a recline connection of the back portion to the supporting frame, such that an angular change of the preference control differs from an angular change of the back portion during recline. 10. A chair as claimed in claim 6, wherein substantially the entire seat portion lifts and moves rearwardly upon a reclining action of the back portion toward the generally reclined position. 11. A chair as claimed in claim 10, wherein substantially the entire seat portion increases in rearward tilt angle as it lifts and moves rearwardly. 12. A chair comprising: a supporting frame;a seat portion for supporting an occupant; anda back portion for supporting the back of a seated occupant, the back portion being reclinable relative to the supporting frame between a generally upright position and a generally reclined position; anda preference control operatively engaged between the back portion and a chair component, wherein displacement of the back portion toward the generally reclined position causes displacement of the chair component, and the reference control is adjustable to vary the amount of displacement of the chair component caused by a given amount of displacement of the back portion toward the generally reclined position, and wherein the preference control comprises a preference block that is articulated to the supporting frame and is articulated to the back portion, and is operatively connected to the chair component, wherein the preference block is pivoted to the supporting frame of the chair and is pivoted to the back portion of the chair, wherein the preference control comprises a preference pin that provides the pivoting of the preference block to the back portion of the chair, andwherein the preference block and back portion each comprise an elongate slot through which the preference pin extends, and wherein the preference pin is movable relative to the preference block to vary the amount of displacement of the chair component for a given amount of displacement of the back portion toward the generally reclined position. 13. A chair comprising: a supporting frame;a seat portion for supporting an occupant; anda back portion for supporting the back of a seated occupant, the back portion being reclinable relative to the supporting frame between a generally upright position and a generally reclined position; anda preference control operatively engaged between the back portion and a chair component, wherein displacement of the back portion toward the generally reclined position causes displacement of the chair component, and the preference control is adjustable to vary the amount of displacement of the chair component caused by a given amount of displacement of the back portion toward the generally reclined position, wherein said chair component is the seat portion, and the chair comprises a recline mechanism configured to move the seat portion upwardly upon a reclining action of the back portion, with the preference control incorporated into the recline mechanism,wherein the recline mechanism comprises a puller that pulls the seat portion rearwardly upon a reclining action of the back portion, and wherein the preference control is provided between the back portion and the puller.
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