US PATENT SUBCLASS 182 / 228.1
RUNG OR RUNG-TO-STILE CONNECTION

Current as of: June, 1999
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182 /   HD   FIRE ESCAPE, LADDER, OR SCAFFOLD

228.1RUNG OR RUNG-TO-STILE CONNECTION {5}
228.2  DF  .~> Rung having anti-skid surface
228.3  DF  .~> Bracket-type connection
228.4  DF  .~> Sleeve-type connection
228.5  DF  .~> Rung for a motor vehicle
228.6  DF  .~> Hollow rung

DEFINITION

Classification: 182/228.1

RUNG OR RUNG-TO-STILE CONNECTION:

(under the class definition) Device comprising a step (or crosspiece) of a ladder intended to be engaged by a climber or comprising the structure interconnecting such a step or crosspiece to the two side rails of the ladder.

SEE OR SEARCH THIS CLASS, SUBCLASS:

90+, for a wall attached rung or step.

159+, for a collapsible ladder having a hinged rung-stile joint.

174+, for cleat structure connecting the top step of a ladder to a stile or prop.

187+, for a platform mounted externally of a shaft.

189+, for a single stile ladder including a series of single steps or rungs.

194+, for other ladder structure. 196+, for a connection between a rung and a flexible stile.

222+, for platform structure.

SEE OR SEARCH CLASS

285, Pipe Joints or Couplings, for a pipe joint or coupling requiring internal wall structure of one of the members and having general utility.

403, Joints and Connections, for joints in general and particularly

230+, for a connection between the end of one rod and the side of another.