Steel wire chair with springs

Claim 2

A chair comprising: a base; a pivotal seat having a longitudinally directed length and a laterally directed width; a back; a lateral member fixed to said base; a seat frame formed of wire and configured in a rectangle, said seat frame being vertically spaced from said lateral member; a first pair of wire frame members attached at one end to said lateral member and at another end to said back, said first pair of wire frame members extending longitudinally; and a second pair of wire frame members attached at one end to said seat frame and at another end to said back, said second pair of wire frame members extending generally parallel to said first pair of wire frame members and being of the same dimension, and each of said wire frame members of said second pair of wire frame members including a coil of about 540 degrees and an intermediate portion attached to said lateral member.

Claim 3

The chair of claim 1 , including: first and second laterally extending wire frame members fixed to said first and said second pairs of wire frame members, said first and said second laterally extending wire frame members being bent to extend longitudinally and to support a pair of armrests.

Claim 4

The chair of claim 2 , wherein: said first and said second laterally extending wire frame members have end portions for supporting said pair of armrests.

Claim 5

The chair of claim 2 , wherein: said back includes a back panel having a lip; and said first and said second laterally extending wire frame members include one upper wire frame member and one lower wire frame member wherein said lower wire frame member engages said lip.

Claim 6

The chair of claim 1 , wherein: said seat includes a forward end portion and wherein said coils of said second pair of wire frame members are positioned nearby.

Claim 7

The chair of claim 5 , including: an abutment wire attached to said seat frame; and a bracket attached to said lateral member wherein said bracket limits the movement of said abutment wire and thereby movement of said seat.

Claim 8

The chair of claim 6 , including: a back panel having pockets for receiving ends of said first and said second pairs of wire frame members.

Claim 9

The chair of claim 7 , wherein: said seat is movable on said second pair of wire frame members and said back is movable on both said first and said second pairs of wire frame members.

Claim 10

The chair of claim 8 , including: first and second laterally extending wire frame members fixed to said first and said second pairs of wire frame members, said first and said second laterally extending wire frame members being bent to extend longitudinally and to support a pair of armrests.

Claim 11

The chair of claim 9 , wherein: said first and said second laterally extending wire frame members have end portions for supporting said pair of armrests.

Claim 12

The chair of claim 1 , wherein: said seat moves independently of said back.

Claim 13

The chair of claim 1 , including: an abutment wire attached to said seat frame; and a bracket attached to said lateral member wherein said bracket limits movement of said abutment wire and thereby movement of said seat.

Claim 14

The chair of claim 1 , wherein: said back includes a back panel having pockets for receiving ends of said first and said second pairs of wire frame members.

Claim 15

The chair of claim 1 , wherein: said seat is movable on said second pair of wire frame members and said back is movable on both said first and said second pairs of wire frame members.

Claim 16

The chair of claim 14 , wherein: said first and said second pairs of wire frame members loop upwardly; and said second pair of wire frame members loop further longitudinally rearwardly than said first pair of wire frame members.

Claim 17

The chair of claim 14 , wherein: said seat moves independently of said back.

Claim 18

The chair of claim 16 , wherein: said first and said second pairs of wire frame members loop upwardly; and said second pair of wire frame members loop further longitudinally rearwardly than said first pair of wire frame members.

Claim 19

An office chair comprising: a base including a plurality of spokes mounted to casters and a vertically adjustable stem extending upwardly from said plurality of spokes; a pivotally mounted seat having a longitudinally directed length and a laterally directed width; a back; a mounting plate fixed to said adjustable stem and extending laterally generally parallel to said seat and spaced therefrom; a seat frame formed of wire and configured generally in a rectangle connected to said seat, said seat frame being vertically spaced from said mounting plate and extending generally parallel thereto; a first pair of wire frame members attached at first ends to said mounting plate and having portions extending longitudinally rearwardly parallel to and spaced from said seat frame and portions curving upwardly to attach to said back at second ends of said first pair of wire frame members; and a second pair of wire frame members attached at first ends to said seat frame and having portions extending longitudinally forwardly to form coils and portions extending rearwardly from said coils to attach to said mounting plate and be generally parallel to said first pair of wire frame members, said second pair of wire frame members having portions curving upwardly to attach to said back at second ends of said second pair of wire frame members, said second pair of wire frame members being of the same dimension as said first pair of wire frame members.

Claim 20

An office chair comprising: a base including a plurality of spokes mounted to casters and a vertically adjustable stem extending upwardly from said plurality of spokes; a pivotally mounted seat having a longitudinally directed length and a laterally directed width; a back; a mounting plate fixed to said adjustable stem and extending laterally generally parallel to said seat and spaced therefrom; a seat frame formed of wire and configured generally in a rectangle connected to said seat, said seat frame being vertically spaced from said mounting plate and extending generally parallel thereto; a first pair of wire frame members attached at first ends to said mounting plate and having portions extending longitudinally rearwardly parallel to and spaced from said seat frame and portions curving upwardly to attach to said back at second ends of said first pair of wire frame members; and a second pair of wire frame members attached at first ends to said seat frame and having portions extending longitudinally forwardly to form coils and portions extending rearwardly from said coils to attach to said mounting plate and be generally parallel to said first pair of wire frame members, said second pair of wire frame members having portions curving upwardly to attach to said back at second ends of said second pair of wire frame members, said second pair of wire frame members being of the same dimension as said first pair of wire frame members.

Claim 21

The chair of claim 18 , including: first and second laterally extending wire frame members fixed to said first and said second pairs of wire frame members, said first and said second laterally extending wire frame members being bent to extend longitudinally and to support a pair of armrests.

Claim 22

The chair of claim 19 , wherein: said first and said second laterally extending wire frame members have end portions for supporting said pair of armrests.

Claim 23

The chair of claim 19 , wherein: said back includes a back panel having a lip; and said first and said second laterally extending wire frame members include one upper wire frame member and one lower wire frame member wherein said lower wire frame member engages said lip.

Claim 24

The chair of claim 18 , wherein: said seat includes a forward end portion and wherein said coils of said second pair of wire frame members are positioned nearby said seat forward end portion.

Claim 25

The chair of claim 22 , wherein: said seat moves independently of said back.

Claim 26

The chair of claim 23 , including: an abutment wire attached to said seat frame; and a bracket attached to said mounting plate wherein said bracket limits movement of said abutment wire and thereby movement of said seat.

Claim 27

The chair of claim 24 , wherein: said back includes a back panel having pockets for receiving said second ends of said first and said second pairs of wire frame members.

Claim 28

The chair of claim 18 , wherein: said seat is movable on deflection of said second pair of wire frame members and said back is movable on deflection of both of said first and said second pairs of wire frame members.

Claim 29

The chair of claim 18 , wherein: said first and said second pairs of wire frame members loop upwardly; and said second pair of wire frame members loop further longitudinally rearwardly than said first pair of wire frame members.

Claim 30

The chair of claim 18 , wherein: an abutment wire attached to said seat frame; and a bracket attached to said mounting plate wherein said bracket limits the movement of said abutment wire and thereby movement of said seat.

Claim 31

The chair of claim 28 , wherein: a back panel having pockets for receiving second ends of said first and said second pairs of wire frame members.

Claim 32

The chair of claim 18 , wherein: said coils each extends approximately 540°.