Tilt chair
First Claim
1. A tilt chair comprising:
- a foot adapted to be supported by a support surface;
a first leg pivotally mounted to said foot at a first horizontal axis;
a second leg pivotally mounted to said first leg at a second horizontal axis, wherein said second axis is spaced from said first axis;
a moveable support member mounted to said second leg at a location spaced from said first and second axes, said moveable support member adapted to be moveably supported by the support surface, wherein said moveable support member is moveable in a first and second direction toward and away from said foot respectively as said first leg pivots relative to said second leg about said second axis and said first leg pivots relative to said foot about said first axis; and
an actuator operably connected to said first and second legs at first and second locations spaced from said second axis respectively.
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0 Petitions
Accused Products
Abstract
A tilt chair having a foot adapted to be supported by a support surface and a first leg pivotally mounted to the foot. A second leg is pivotally mounted to the first leg. A moveable support member is mounted to the second leg and is adapted to be supported by the support surface. The moveably support member is moveable in a first and second direction toward and away from the foot respectively as the first leg pivots relative to the second leg and as the first leg pivots relative to the foot. In one embodiment, the moveable support member is configured as a wheel. In one embodiment, a lower back member has a lower end pivotally mounted to the first leg and an upper back member pivotally mounted to an upper end of the lower back member. A restraining link is pivotally mounted between the lower back member and the second leg. An upper back link has a lower end pivotally mounted to the first leg and an upper end pivotally mounted to the upper back member. An actuator is operably connected to the first and second legs. A seat support is connected to the second leg, and one or both of an armrest and worksurface are mounted to the seat support. A method of tilting the chair is also provided and includes pivoting the second leg relative to the first leg and thereby rolling the wheel on the floor and pivoting the first leg relative to the foot.
99 Citations
34 Claims
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1. A tilt chair comprising:
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a foot adapted to be supported by a support surface; a first leg pivotally mounted to said foot at a first horizontal axis; a second leg pivotally mounted to said first leg at a second horizontal axis, wherein said second axis is spaced from said first axis; a moveable support member mounted to said second leg at a location spaced from said first and second axes, said moveable support member adapted to be moveably supported by the support surface, wherein said moveable support member is moveable in a first and second direction toward and away from said foot respectively as said first leg pivots relative to said second leg about said second axis and said first leg pivots relative to said foot about said first axis; and an actuator operably connected to said first and second legs at first and second locations spaced from said second axis respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A tilt chair comprising:
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a foot adapted to be supported by a support surface; a first leg pivotally mounted to said foot at a first horizontal axis; a second leg pivotally mounted to said first leg at a second horizontal axis, wherein said second axis is spaced from said first axis; a moveable support member mounted to said second leg at a location spaced from said first and second axes, said moveable support member adapted to be moveably supported by the support surface, wherein said moveable support member is moveable in a first and second direction toward and away from said foot respectively as said first leg pivots relative to said second leg about said second axis and said first leg pivots relative to said foot about said first axis; and a lower back member having a lower end pivotally mounted to said first leg at a fourth horizontal axis spaced from said second axis. - View Dependent Claims (10, 11, 12)
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13. A tilt chair comprising:
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a foot adapted to be supported by a support surface; a first leg pivotally mounted to said foot at a first horizontal axis; a second leg pivotally mounted to said first leg at a second horizontal axis, wherein said second axis is spaced from said first axis; a moveable support member mounted to said second leg at a location spaced from said first and second axes, said moveable support member adapted to be moveably supported by the support surface, wherein said moveable support member is moveable in a first and second direction toward and away from said foot respectively as said first leg pivots relative to said second leg about said second axis and said first leg pivots relative to said foot about said first axis; a seat support connected to said second leg; an armrest mounted to said seat support, wherein said armrest is pivotally mounted to said seat support about a vertical axis; and a worksurface pivotally mounted to said seat support about said vertical axis, wherein said worksurface and said armrest are independently pivotable about said vertical axis.
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14. A tilt chair comprising:
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a foot adapted to be supported by a floor; a first leg pivotally mounted to said foot at a first horizontal axis; a second leg pivotally mounted to said first leg at a second horizontal axis, wherein said second axis is spaced from said first axis; a wheel rotatably mounted to said second leg at a third horizontal axis spaced from first and second axes, said wheel is adapted to be supported by the floor, wherein said wheel is rotatable in a first and second direction toward and away from said foot respectively as said first leg pivots relative to said second leg about said second axis and said first leg pivots relative to said foot about said first axis; a lower back member having a lower end pivotally mounted to said first leg at a fourth horizontal axis spaced from said second axis; and a restraining link having a first end pivotally mounted to said lower end of said lower back member at a fifth axis spaced from said fourth axis and a second end pivotally mounted to said second leg at a sixth axis spaced from said second axis. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of tilting a chair comprising:
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providing a tilt chair comprising a foot supported by a support surface;
a first leg pivotally mounted to said foot at a first horizontal axis;
a second leg pivotally mounted to said first leg at a second horizontal axis, wherein said second axis is spaced from said first axis; and
a moveable support member rotatably mounted to said second leg at a third horizontal axis spaced from first and second axes, wherein said moveably support member is supported by said support surface;pivoting said second leg relative to said first leg about said second pivot axis and thereby moving said moveable support member on said support surface and pivoting said first leg relative to said foot about said first axis; and providing a lower back member having a lower end pivotally mounted to said first leg at a fourth horizontal axis spaced from said second axis, and pivoting said lower back member about said fourth axis as said second leg is pivoted relative to said first leg. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of tilting a chair comprising:
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providing a tilt chair comprising a foot supported by a support surface;
a first leg pivotally mounted to said foot at a first horizontal axis;
a second leg pivotally mounted to said first leg at a second horizontal axis, wherein said second axis is spaced from said first axis; and
a moveable support member rotatably mounted to said second leg at a third horizontal axis spaced from first and second axes, wherein said moveably support member is supported by said support surface;pivoting said second leg relative to said first leg about said second pivot axis and thereby moving said moveable support member on said support surface and pivoting said first leg relative to said foot about said first axis; providing a seat support connected to said second leg, and wherein pivoting said second leg relative to said first leg about said second pivot axis comprises pivoting said seat support relative to said first leg about said second pivot axis; providing an armrest mounted to said seat support, wherein said armrest is pivotally mounted to said seat support about a vertical axis, and further comprising pivoting said armrest about said vertical axis; and providing a worksurface pivotally mounted to said seat support about said vertical axis, and pivoting said worksurface about said vertical axis independently of said armrest.
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34. A method of tilting a chair comprising:
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providing a tilt chair comprising a foot supported by a support surface;
a first leg pivotally mounted to said foot at a first horizontal axis;
a second leg pivotally mounted to said first leg at a second horizontal axis, wherein said second axis is spaced from said first axis; and
a moveable support member rotatably mounted to said second leg at a third horizontal axis spaced from first and second axes, wherein said moveably support member is supported by said support surface;pivoting said second leg relative to said first leg about said second pivot axis and thereby moving said moveable support member on said support surface and pivoting said first leg relative to said foot about said first axis; providing a seat support connected to said second leg, and wherein pivoting said second leg relative to said first leg about said second pivot axis comprises pivoting said seat support relative to said first leg about said second pivot axis; and providing a worksurface mounted to said seat support, and wherein said pivoting said seat support relative to said first leg about said second pivot axis further comprises pivoting said worksurface with said seat support relative to said first leg about said second pivot axis.
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Specification