Chairs and seats – Back movement resiliently opposed in operating position – Back adjusts independent of seat
Reexamination Certificate
2007-06-26
2007-06-26
Nelson, Jr., Milton (Department: 3636)
Chairs and seats
Back movement resiliently opposed in operating position
Back adjusts independent of seat
C297S300100, C297S411370
Reexamination Certificate
active
10175452
ABSTRACT:
A seat assembly (21) including a seat (22), a backrest (23) and a mounting assembly (24) mounting the seat (22) in a near horizontal orientation for movement along an upwardly concaved arcuate seat path having a center of curvature (37) proximate the center of mass (39) of a person seated on the seat, and the mounting assembly (24) further mounting the backrest (23) in a near vertical orientation for movement independently of the seat along a forwardly concaved arcuate path having a center curvature (37) proximate the center of mass (39) of the person. An adjustment assembly (61) is provided for adjusting the radius of curvature of the path of motion of the backrest (23). Also provided are a backrest tilt adjustment assembly (71), an armrest adjustment assembly (90), a seat biasing assembly (110) and a seat motion latching assembly (111). A method of self-adjusting support and alignment of a backrest also is disclosed.
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Dorsey & Whitney LLP
Jr. Milton Nelson
LandOfFree
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