Heavy duty adjustable railing

Claim 1

A RAILING ASSEMBLY ADAPTED TO BE SECURED WITH RESPECT TO A FIXED SURFACE, COMPRISING; (1) AN ELONGATED RAILING SECTION OF GENERALLY U-SHAPED CROSS SECTION AND HAVING A BASE PORTION AND OPPOSED LEG PORTIONS; (2) CONNECTING MEANS INCLUDING A CLAMPING PLATE OF ARCHED CROSS SECTIONAL CONFIGURATION THAT IS ADAPTED TO BE INSERTED BETWEEN SAID LEG PORTIONS AT ONE END OF SAID RAILING SECTION; (3) OPPOSED SUPPORT MEANS CARRIED BY THE INTERNAL SURFACES OF SAID LEG PORTIONS AND ADAPTED TO SUSPEND SAID CLAMPING PLATE IN PREDETERMINED SPACED RELATIONSHIP TO THE INTERIOR WALL SURFACE OF SAID BASE PORTION OF SAID RAILING SECTION; (4) EXPANDING MEANS REACTING BETWEEN SAID RAILING SECTION AND SAID CLAMPING PLATE AND FLATTENING SAID CLAMPING PLATE TO TRANSVERSELY EXPAND THE SAME, WITH THE OPPOSED EDGE PORTIONS THEREOF BEING MOVED APART AND INTO FRICTIONAL CONTACT WITH THE INTERNAL SURFACES OF SAID OPPOSED LEG PORTIONS; (5) AND FASTENING MEANS INTEGRALLY PROJECTING FROM SAID CLAMPING PLATE AND HAVING A MOUNTING SURFACE THAT IS DISPOSED AT RIGHT ANGLES TO THE PLANE OF SAID CLAMPING PLATE.