Multi-task mid-pivot chair control mechanism
First Claim
1. A chair control mechanism for a chair having a seat, a back and a seat support, comprising:
- a base member adapted to be secured to the seat support;
a seat mounting member pivotably interconnected with the base member, wherein the seat is adapted to be mounted to the seat mounting member and wherein pivoting movement of the seat mounting member relative to the base member functions to pivot the seat relative to the seat support;
a back mounting member pivotably interconnected with the seat mounting member at a location spaced from the pivotable interconnection of the seat mounting member with the base member, wherein the back is adapted to be mounted to the back mounting member and wherein pivoting movement of the back mounting member relative to the seat mounting member functions to pivot the back relative to the seat;
an adjustable back position lock arrangement interposed between the seat mounting member and the back mounting member for selectively locking the position of the back relative to the seat in one of a plurality of selected positions; and
a seat position adjustment arrangement interposed between the base section and the seat mounting member for adjustably controlling the range of pivoting movement of the seat relative to the seat support member.
2 Assignments
0 Petitions
Accused Products
Abstract
A chair control mechanism for positioning between the seat and seat support of a chair. The chair control mechanism includes a base section for mounting to a seat support such as an adjustable height cylinder, and a seat mounting section pivotably interconnected with the base section. A seat is mounted to the seat mounting section, and is pivotable about a seat pivot axis. An adjustable position back mounting arrangement is pivotably interconnected with the seat mounting section, and the chair back is engageable with the back mounting section. A variable stop arrangement is interposed between the base section and the seat mounting section, for varying the range of pivoting movement of the seat relative to the seat support. The back can be selectively locked in one of a number of predetermined positions relative to the seat by operation of a variable position back locking arrangement.
67 Citations
14 Claims
-
1. A chair control mechanism for a chair having a seat, a back and a seat support, comprising:
-
a base member adapted to be secured to the seat support;
a seat mounting member pivotably interconnected with the base member, wherein the seat is adapted to be mounted to the seat mounting member and wherein pivoting movement of the seat mounting member relative to the base member functions to pivot the seat relative to the seat support;
a back mounting member pivotably interconnected with the seat mounting member at a location spaced from the pivotable interconnection of the seat mounting member with the base member, wherein the back is adapted to be mounted to the back mounting member and wherein pivoting movement of the back mounting member relative to the seat mounting member functions to pivot the back relative to the seat;
an adjustable back position lock arrangement interposed between the seat mounting member and the back mounting member for selectively locking the position of the back relative to the seat in one of a plurality of selected positions; and
a seat position adjustment arrangement interposed between the base section and the seat mounting member for adjustably controlling the range of pivoting movement of the seat relative to the seat support member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of adjusting the range of pivoting movement of a seat relative to a seat support, wherein a chair control mechanism having a base section and a pivotable seat mounting section is located between the seat and the seat support, wherein the seat mounting section is pivotable about a seat pivot axis relative to the base section, comprising the steps of:
-
providing first and second pivot stops, wherein the first pivot stop defines a first height and the second pivot stop defines a second height; and
securing a selected one of the first and second pivot stops between the base section and the pivotable seat mounting section at a location offset from the seat pivot axis, wherein the first and second heights of the first and second pivot stops, respectively, function to control the range of pivoting movement of the seat mounting section relative to the base section. - View Dependent Claims (9, 10, 11, 12, 13)
-
-
14. A seat pivot limiting arrangement for controlling the range of pivoting movement of a seat relative to a seat support, wherein a chair control mechanism having a base section and a pivotable seat mounting section is located between the seat and the seat support, wherein the seat mounting section is pivotable about a seat pivot axis relative to the base section, comprising:
a pivot stop secured to the base section at a location offset from the seat pivot axis, wherein the pivot stop includes a stop surface and mounting structure enable with the seat mounting section for securing the pivot stop the seat mounting section, wherein engagement of the stop surface with the seat mounting section functions to control the range of pivoting movement of the seat support member relative to the base member, and wherein the stop surface defines a predetermined height, wherein the pivot stop member is selected from two or more pivot stop members, each of which has stop surfaces of differing heights, wherein the selected pivot stop member defines a range of pivoting movement of the seat mounting section relative to the base section different than that of the remaining pivot stop members.
Specification