{HEAD ~ The step ladder} 3 further comprising {TAIL ~ a bar} slidably attached to at least one of said lower back leg, said upper back leg, and said lock plate, said bar slidable between a first position interfering with pivoting of said lock plate and a second non interfering position 
comprising
{ HEAD ~ The step ladder } 3 further comprising { TAIL ~ a bar } slidably attached to at least one of said lower back leg , said upper back leg , and said lock plate , said bar slidable between a first position interfering with pivoting of said lock plate and a second non interfering position
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH