US PATENT SUBCLASS 297 / 344.12
.~.~ Vertically adjustable

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

311  DF  MOVABLE BOTTOM {5}
344.1  DF  .~ Bottom and back movable as a unit {3}
344.12.~.~ Vertically adjustable {4}
344.13  DF  .~.~.~> And horizontally adjustable
344.14  DF  .~.~.~> Horizontal movement concurrent with vertical movement; i.e., oblique movement
344.15  DF  .~.~.~> Pivotal linkage assembly {2}
344.18  DF  .~.~.~> Slidably coupled components (e.g., telescoped, etc.) {2}

DEFINITION

Classification: 297/344.12

Vertically adjustable:

(under subclass 344.1) Device wherein the unit includes a means to permit the unit to be adjusted up or down relative to the base member in a substantially vertical direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

130+, for a bottom movable vertically on an alternately usable seat mount.

164+, for vertically adjustable table and seat.

338+, for a bottom movable vertically independently of the back.

SEE OR SEARCH CLASS

5, Beds, 11, for a bed bottom adjustable in height, and subclass 83.1 for an invalid-hoisting device.

108, Horizontally Supported Planar Surfaces,

96, for terraced horizontally supported planar surfaces which are vertically adjustable, subclasses 106+ for plural related horizontally supported planar surfaces which are vertically adjustable, subclasses 116+ for a folding horizontally supported planar surface provided with vertical adjustability, and subclasses 144.11+ for a single horizontally supported planar surface which is vertically adjustable.

182, Fire Escape, Ladder, or Scaffold,

141+, for a platform with elevating or lowering means.

248, Supports,

396, for a tilting support surface in which the ends are raised differentially, subclasses 157+ for a vertically adjustable stand or stool, subclasses 161+ for a vertically adjustable standard-type stand or stool, subclasses 404+ for a vertically adjustable standard-type stand with force-multi-plying means, subclass 405 for a vertically adjustable standard-type stand with screw and nut adjusting means, and subclass 422 for a vertically adjustable stand employing similar means.