Back construction for seating unit
First Claim
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1. A seating product comprising:
- a base including a yoke, a center post and radially-extending legs with castors thereon, the yoke including upwardly extending side arms and a cross member extending between the side arms;
an armrest supported on each of said side arms;
a back structure pivoted relative to the base at back pivots for movement between upright and reclined positions; and
a seat pivoted to the back structure at seat pivots and operably supported for movement on the base;
the back structure including right and left configured end sections extending forwardly from the back and positioned on opposite sides of the seat and that are each located generally between the sides of the seat and associated ones of the side arms;
wherein the end sections are fixed relative to the back structure and include structure defining both the back and seat pivots, the back pivots define a back pivot axis, the back pivot axis is substantially horizontal and extends through the side arms, and the back structure is mounted to the side arms for movement about the back pivot axis;
upon recline of the back structure, the seat pivotally moves in a generally arcuate path about the back pivots and said seat moves relative to said back structure.
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Abstract
A back construction includes a base with a yoke formed by a cross member and upright side arms that define a U-shape, armrests supported by the side arms, and a seat and back also supported by the side arms for synchronized motion upon recline of the back. Specifically, the side arms define a back tilt axis about which the back rotates upon recline. The back includes a back structure with configured ends that engage the side arms for rotation about the back tilt axis, and further define a seat tilt axis for supporting rotation/movement of the seat upon recline of the back.
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Citations
44 Claims
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1. A seating product comprising:
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a base including a yoke, a center post and radially-extending legs with castors thereon, the yoke including upwardly extending side arms and a cross member extending between the side arms; an armrest supported on each of said side arms; a back structure pivoted relative to the base at back pivots for movement between upright and reclined positions; and a seat pivoted to the back structure at seat pivots and operably supported for movement on the base; the back structure including right and left configured end sections extending forwardly from the back and positioned on opposite sides of the seat and that are each located generally between the sides of the seat and associated ones of the side arms; wherein the end sections are fixed relative to the back structure and include structure defining both the back and seat pivots, the back pivots define a back pivot axis, the back pivot axis is substantially horizontal and extends through the side arms, and the back structure is mounted to the side arms for movement about the back pivot axis; upon recline of the back structure, the seat pivotally moves in a generally arcuate path about the back pivots and said seat moves relative to said back structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A seating product comprising:
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a seat; a base including a yoke having a pair of vertically extending support members and a cross member extending between the support members, the support members being disposed on respective sides of the base;
the base further including a center post and radially-extending legs with castors thereon;an armrest supported on each of the support members; a back shaped and adapted to support a seated user, said back including right and left end sections proximate to its lower portion, the end sections extending forwardly from the back on each side of the back and positioned on opposite sides of the seat, a portion of the end sections located generally between the sides of the seat and associated with one of the support members, each of the end sections being fixed to the back and pivotally connected to an associated one of the support members at a back pivot axis for movement about the back pivot axis to allow movement of the back between upright and reclined positions, the end sections including structure defining both seat pivots and the back pivots; and the seat being pivoted to the end sections at a seat pivot axis spaced from the back pivot axis in an arrangement that causes the seat to move in response to recline of the back; the back pivot axis being substantially horizontal and extending through the support members; wherein upon recline of the back, the seat pivots axis rotates in a generally arcuate path about the back pivot axis and said seat moves relative to said back. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A seating product comprising:
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a base assembly including a center post, radially-extending legs with castors thereon, a cross member, and upwardly extending side arms supported on ends of the cross member; an armrest supported on each of said side arms; a seat operably supported on the base assembly; a back assembly pivoted to the base assembly at a first pivot axis for movement between upright and reclined positions and having forwardly extending support structure proximate its lower portion; the forwardly extending support structure fixed relative to the back assembly and including structure defining the first pivot axis, the support structure mounted to the side arms at the first pivot axis for movement about the first pivot axis, and the support structure forming at least part of a connection of the back assembly to the base assembly; and said seat being pivoted to the forwardly extending support structure at a second pivot axis spaced from the first pivot axis in an arrangement that causes the second pivot axis to rotate in a generally arcuate path about the first pivot axis and the seat to move in response to recline of the back assembly, wherein the first pivot axis is substantially horizontal and extends through the side arms. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification