Chairs and seats – Bottom or back with means to alter contour – Providing support for lower back region
Reexamination Certificate
2007-04-10
2007-04-10
Barfield, Anthony D. (Department: 3636)
Chairs and seats
Bottom or back with means to alter contour
Providing support for lower back region
C297S284100
Reexamination Certificate
active
11227883
ABSTRACT:
An adjustable lumbar support (10) adapted to be easily integrated into new or existing seat structures. Adjustable lumbar support (10) includes a floating plate (15) supported by a support linkage. In one embodiment, the support linkage is defined by a cable member (21) and first and second spring members (25) and (26) which engage the seat frame. In an alternate embodiment, the support linkage is defined by first and second spring members25engaged with first and second linkage members (52), respectively, and includes a rotary power mechanism (50) for applying a rotating motion to a shaft (54) threadably engaged with first and second linkage members (52). The degree of support provided by floating plate (15) is adjusted by adjusting the effective length of the support linkage. Lumbar support mechanism (10) can be mounted in a state of the art seat back alone or in conjunction with an integral trim attachment array (70). Trim attachment array (70) is adapted to replace the trim wires molded into the cushion foam of a standard seat. Integral trim attachment array (70) is defined by a trim ring (73) having integrated pinch clips (76). The trim ring has a rectilinear configuration adapted to conform to the outline of the seat back. Trim ring (73) is, preferably molded into the seat back foam as will be understood by those skilled in the art. Linkages (79) are utilized to link a plurality of trim rings (73) together or to link trim ring (73) to floating support plate (15).
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Massara Andrew J.
Vogt Brandon
Alfmeier Corporation
Barfield Anthony D.
Dority & Manning P.A.
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