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US 6,929,327 B2Granted
Chair with oscillating seat
AssigneePro-Cord S.p.A.
InventorGiancarlo Piretti
Life of this patent
Estimating the term…
Abstract
A chair, in particular an office chair, comprising: a base structure, a seat support structure, articulated to the base structure around a transverse axis, an adjustable elastic device to apply an elastic force between the base structure and the seat support structure, a manually operated adjustment device for varying the distance between said adjustable elastic device and said transverse axis.
Claims14
A chair, in particular an office chair, comprising:
- a base structure,
- a seat support structure, articulated to the base structure around a transverse axis,
- an adjustable elastic device to apply an elastic force between the base structure and the seat support structure,
- an adjustment device which can be operated manually to vary a distance between said adjustable elastic device and said transverse axis,
- wherein, in a resting position of the seat, said adjustable elastic device does not apply force to the seat support structure, so that the operation of the said adjustment device in said resting position of the seat is carried out without any elastic reaction force acting on the adjustable elastic device, and
- wherein the adjustable elastic device comprises a support, movable relative to the base structure along a longitudinal direction and bearing at least an elastic element associated with at least a member for applying a load.
3 more elements
A chair, in particular an office chair, comprising:
- a base structure,
- a seat support structure, articulated to the base structure around a transverse axis,
- an adjustable elastic device to apply an elastic force between the base structure and the seat support structure,
- an adjustment device which can be operated manually to vary a distance between said adjustable elastic device and said transverse axis,
- a seat movable in the longitudinal direction relative to the seat support structure,
- wherein the longitudinal motion of the seat is synchronized with the oscillating motion of the seat support structure around said transverse axis, and wherein the chair further comprises a backrest support structure including a pair of arms provided with respective appendages which engage respective longitudinal shoes fastened to the seat and movable in the longitudinal direction relative to the seat support structure.
3 more elements
Dependencies are inferred from the claim text.