Seating arrangement

Patent metadata

Field	Value
Publication number	US-11553797-B2
Application number	US-202017094416-A
Country	US
Kind code	B2
Filing date	Nov 10, 2020
Priority date	Apr 13, 2015
Publication date	Jan 17, 2023
Grant date	Jan 17, 2023

Abstract

A seating arrangement includes a back arrangement movable between upright and reclined positions, a linkage arrangement including a first link member comprising a portion of a seat arrangement, a second link member supported on a base, flexibly resilient front link members extending between forward portions of the first and second link members and being integral with the second link member, and a rigid rear link member extending between rearward portions of the first and second link members including a separate piece from the first or second link members, wherein the rearward portion of the first link member extends laterally in a first plane when the back arrangement is upright, and laterally in a second plane when the back arrangement is reclined, where the second plane is angled with respect to the first plane, and is positioned farther away from the base when the back arrangement is reclined than when upright.

First claim

The invention claimed is:

1. A seating arrangement, comprising:
a base; and
a back arrangement and a seat arrangement each supported via the base on a linkage arrangement, wherein the back arrangement is moveable between a generally upright position and a reclined position;
the linkage arrangement comprising:
a horizontally-extending first link member comprising at least a portion of the seat arrangement, the first link member including a forward portion and a rearward portion;
a second link member supported on the base;
a pair of flexibly resilient front link members extending between the forward portion of the first link member and a forward portion of the second link member, the front link members being a single, integral piece with the second link member; and
a rigid rear link member extending between the rearward portion of the first link member and the second link member, the rear link member including a separate piece from the first link member or the second link member;
wherein the rearward portion of the first link member extends fore-to-aft in a first plane when the back arrangement is in the generally upright position, and the rearward portion of the first link member extends fore-to-aft in a second plane when the back arrangement is in the reclined position, wherein the second plane is angled with respect to the first plane, and wherein the rearward portion of the first link member is positioned farther away from the base when the back arrangement is in the reclined position than when the back arrangement is in the generally upright position.

2. The seating arrangement of claim 1 , wherein a majority of a length of the flexibly resilient front links flex when the back arrangement moves from the upright position to the reclined position.

3. The seating arrangement of claim 1 , wherein a gap extends between the first link member and the second link member.

4. The seating arrangement of claim 3 , wherein the arrangement further includes an armrest assembly that is connected to the linkage arrangement within the gap.

5. The seating arrangement of claim 1 , wherein the back arrangement is coupled to the base through the second link member.

6. The seating arrangement of claim 1 , wherein the seating arrangement further includes a stop member assembly configured to limit movement of the back arrangement between the substantially upright position and the reclined position.

7. The seating arrangement of claim 6 , wherein a portion of the stop member assembly is visible from an exterior of the seating arrangement.

8. The seating arrangement of claim 6 , wherein the stop member assembly includes a tilt stop that is coupled to the base.

9. The seating arrangement of claim 6 , wherein the stop member assembly engages the second link member and the rear link member.

10. The seating arrangement of claim 1 , wherein the first link member, second link member, front link members, and rear link member cooperate to define a pass-through therebetween.

11. The seating arrangement of claim 1 , wherein the first, second, front and rear link members cooperate to define a four-bar linkage assembly.

12. The seating arrangement of claim 1 , wherein the rear link member is fixedly connected to a portion of the back arrangement to move therewith.

13. The seating arrangement of claim 1 , wherein the first link member moves upwardly and rearwardly with respect to the base as the back arrangement moves from the upright position to the reclined position.

14. The seating arrangement of claim 1 , wherein the second link member and the first link member comprise the same material.

15. A seating arrangement, comprising:
a base;
a back arrangement and a seat arrangement each supported via the base on a linkage arrangement, the back arrangement including a vertically-extending back portion and a forwardly-extending portion, the back arrangement moveable between a generally upright position and a reclined position where the back arrangement and the seat arrangement are coupled to the base at a first position;
the linkage arrangement comprising:
a horizontally-extending first link member comprising at least a portion of the seat arrangement;
a second link member supported on the base having a longitudinally-extending axis;
a pair of flexibly resilient front link members extending between the forward portion of the first link member and a forward portion of the second link member; and
a rigid rear link member extending between the first link member and the second link member and having a second longitudinally-extending axis, where the rear link member is non-pivotably coupled to the second link member, wherein the rear link member and the forwardly-extending portion of the back arrangement are non-pivotally fixed together such that an angle therebetween remains constant as the back arrangement moves between the generally upright and reclined positions, and wherein the rigid rear link member is coupled to the first link member at a second position that is located entirely rearward of the first position.

16. The seating arrangement of claim 15 , wherein the rear link extends forwardly from the second link member to the first link member.

17. The seating arrangement of claim 15 , wherein the front link member extends forward from the second link member to the first link member.

18. The seating arrangement of claim 15 , further comprising:
an arm assembly that includes a support, a pair of arm support members extending laterally outward from the support, and a pair of arm pads supported by the arm support members, and wherein the support is centrally located across a width of the seating arrangement.

19. The seating arrangement of claim 15 , further comprising:
an arm assembly that includes a pair of arm support members and a pair of arm pads supported by the arm support members, wherein the arm support members wrap about laterally spaced outer edges of the seat arrangement from positions located beneath the seat arrangement.

20. The seating arrangement of claim 15 , wherein the first link member, the second link member, the front link members and the rear link member cooperate to define a pass-through therebetween.

21. The seating arrangement of claim 20 , further comprising:
an arm assembly supported between the first link member and the second link member.

22. A seat and back arrangement to be positioned on a surface, the seat and back arrangement comprising:
a seat member;
a back member; and
a four-bar assembly, comprising:
a substantially rigid bottom link having a front end and a rear end, a portion of the bottom link configured to be grounded with respect to the surface;
a top link having a front end and a rear end, a portion of the top link configured to support a front portion of the seat member, the top link including a left side and a right side;
a rear link extending between the rear end of the bottom link and the rear end of the top link, the rear link including a top end and a bottom end, the top end connected to a rear portion of the top link wherein the rear link member is substantially rigid along an entire length thereof;
a first articulation location between the rear end of the bottom link and the bottom end of the rear link, wherein outer side edges of the rear link are located between and spaced inwardly from the left and right sides of the top link in a lateral direction;
a second articulation location between the rear end of the top link and the top end of the

Assignees

• Steelcase Inc

Inventors

• Ludwig James N
• Deevers Nickolaus William Charles
• Heidmann Kurt R
• Johnson William Thomas
• Smith Bruce M
• Spoelhof Mark William

Classifications

• A47C3/18

  Chairs or stools with rotatable seat (adjustable in height by rotation A47C3/24) · CPC title

• A47C5/12

  of plastics, with or without reinforcement · CPC title

• A47C7/445 Primary

  with bar or leaf springs · CPC title

• A47C1/03277

  with bar or leaf springs · CPC title

• A47C3/20

  Chairs or stools with vertically-adjustable seats · CPC title