US PATENT SUBCLASS 52 / 182
STEPPED; E.G., STAIR

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

182STEPPED; E.G., STAIR {6}
183  DF  .~> Interconnected relatively movable components
184  DF  .~> With additional building feature {2}
187  DF  .~> Helical type
188  DF  .~> Tread unit on horizontal tread member connected to riser
189  DF  .~> Precast stonelike component {1}
191  DF  .~> Risers connected to common stringer

DEFINITION

Classification: 52/182

(under the class definition) Structure defining (1) a stepped structure, i.e., surfaces which are arranged in repetitious vertical and horizontal offset relationship or (2) a specific building structure having attached footholds or rungs.

SEE OR SEARCH THIS CLASS, SUBCLASS:

6+, for a construction with an auditorium, stadium or theater feature in addition to a mere stepped structure, e.g., a stepped structure with seat means.

179, for a tread nosing wear or anti-skid feature.

518+, for lapped multiplanar surfacing, e.g., shingled, in which surfacing sections are offset and lapped.

SEE OR SEARCH CLASS

108, Horizontally Supported Planar Surfaces, 92+, for a terraced article supporting structure with a specific understructure.

182, Fire Escape, Ladder, or Scaffold, appropriate subclasses for a ladder, per se, with rungs, steps or treads in the plane of a stile or stringer but which lack a riser, i.e., a vertical closing plate between tread members.

256, Fences,

22, for a stair rail (banister).

280, Land Vehicles,

163+, for a step structure specialized to vehicle use.