Dielectric ladder

Claim 1

A DIELECTRIC LADDER ASSEMBLY COMPRISING: A PAIR OF SPACED, GENERALLY PARALLEL SIDE RAILS; AND A PLURALITY OF SPACED RUNGS CONNECTED TO AND SPANNING THE DISTANCE BETWEEN SAID SIDE RAILS IN GENERALLY PREPENDICULAR RELATIONSHIP THERETO, EACH OF SAID RAILS AND THE RUNGS BEING DEFINED BY A TUBULAR ELEMENT OF RELATIVELY RIGID, NONCELLULAR, REINFORCED SYNTHETIC RESIN MATERIAL AND FILLED WITH A CELLULAR, MOISTURE-RESISTANT, SYNTHETIC RESIN FOAM, SAID RAILS EACH BEING OF GREATER DIAMETER THAN THE DIAMETER OF EACH RUNG AND OPPOSED PORTIONS OF THE RAIL ELEMENTS HAVING OPPOSED, GENERALLY ALIGNED OPENINGS THEREIN FOR RECEIVING THE EXTREMITIES OF RESPECTIVE RUNGS, SAID OPENINGS BEING OF ONLY SLIGHTLY GREATER DIAMETER THAN SAID DIAMETER OF THE RUNGS, THERE BEING A CAVITY OF GENERALLY CYLINDRICAL CONFIGURATIN IN THE FOAM WITHIN EACH SIDE RAIL ALIGNED WITH RESPECTIVE OPENINGS IN THE ELEMENTS THEREOF, COAXIAL WITH CORRESPONDING OPENINGS, OF GREATER TRANSVERSE DIAMETER THAN RESPECTIVE OPENINGS AND EXPOSING THE ROUGH INTERIOR SURFACES OF THE RAIL ELEMENTS IN SURROUNDING RELATINSHIP TO THE OPENINGS AS WELL AS IN DIRECT OPPOSITION TO SAID OPENINGS, SAID EXTREMITIES OF THE RUNGS EXTENDING THROUGH CORRESPONDING OPENINGS N THE RAIL ELEMENTS AND TERMINATING ADJACENT SAID EXPOSED ROUGH SURFACES OF THE RAIL ELEMENTS, A SUBSTANTIAL PORTION OF THE EXTREMITIES OF THE RUNGS POSITIONED WITHIN SAID SIDE RAILS BEING DEVOID OF SAID FOAM AND THEREBY DEFINING INWARDLY EXTENDING DEPRESSIONS IN EACH OF THE RUNGS COMMUNICATING DIRECTLY WITH CORRESPONDING CAVITIES AND EXPOSING CIRCUMFERENTIALLY EXTENDING INTERNAL SURFACES OF RESPECTIVE RUNG ELEMENTS OF MAJOR WIDTH, AND A MASS OF SOLIDIFIED, MONOLITHIC, NONCELLULAR, RELATIVELY RIGID SYNTHETIC RESIN MATERIAL FILLING EACH OF SAID CAVITIES AND RESPECTIVE DEPRESSIONS ALIGNED THEREWITH, AND FIRMLY BONDED TO SAID EXPOSED INTERNAL SURFACES OF THE SIDE RAIL ELEMENT AND THE RUNG ELEMENTS TO SECURELY CONNECT THE RUNGS TO THE SIDE RAILS AND PRECLUDE ROTATION OF THE RUNGS RELATIVE TO THE SIDE RAILS.