US PATENT SUBCLASS 297 / 284.7
.~.~ Rectilinear vertical adjustment

Current as of: June, 1999
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297 /   HD   CHAIRS AND SEATS

284.1  DF  BOTTOM OR BACK WITH MEANS TO ALTER CONTOUR {5}
284.4  DF  .~ Providing support for lower back (i.e., lumbar) region {4}
284.7.~.~ Rectilinear vertical adjustment

DEFINITION

Classification: 297/284.7

Rectilinear vertical adjustment:

(under subclass 284.4) Device wherein the lumbar support is movable to selected positions along a substantially straight line outwardly from a horizontal plane.

SEE OR SEARCH THIS CLASS, SUBCLASS:

284.5, for a lumbar support detachably secured to a chair component by a strap, which strap may selectively secure the headrest in vertically adjusted position.