Adjustable electrical trench

Claim 1

IN AN ELECTRICAL TRENCH FOR USE IN A BUILDING FLOOR, SAID TRENCH HAVING GENERALLY RECTANGULAR ALIGNED ABUTTING COVER PLATES SUBSTANTIALLY FLUSH WITH THE LEVEL OF SAID FLOOR, THE IMPROVEMENT IN EXPOSED EDGE CONSTRUCTION COMPRISING: A LONGITUDINAL STRIP EXTENDED ALONG EACH SIDE OF THE TRENCH SUBSTANTIALLY FLUSH IN PART WITH THE SAID LEVEL OF THE SAID FLOOR, MEANS FOR DETACHABLY SECURING SAID COVER PLATE TO SAID LONGITUDINAL STRIPS, A LINEAR SPACER STRIP INTERPOSED BETWEEN AND ENGAGED WITH EACH OF SAID LONGITUDINAL STRIPS AND SAID COVER PLATE, SAID LINEAR SPACER STRIP HAVING A Z-SHAPED CONFIGURATION AND INCLUDING A FLAT BODY PORTION AND OPPOSED VERTICAL LIPS EXTENDED FROM THE SAID BODY PORTION, A FIRST OF SAID VERTICAL LIPS BEING SHORTER THAN THE SECOND OF SAID VERTICAL LIPS SAID SPACER STRIP BEING DISPOSED IN ONE OF TWO ALTERNATIVE POSITIONS, WHEREBY WHEN THE SAID BODY PORTION IS POSITIONED WITH A FIRST SURFACE UPPERMOST, THE SAID FIRST OF SAID VERTICAL LIPS EXTENDS UPWARDLY AND TERMINATES SUBSTANTIALLY AT THE SAID LEVEL OF SAID FLOOR, AND WHEN THE SAID BODY PORTION IS POSITIONED WITH THE OTHER SURFACE UPPERMOST, SAID SECOND OF SAID VERTICAL LIPS EXTENDS UPWARDLY AND TERMINATES ABOVE THE SAID LEVEL OF SAID FLOOR TO SERVE AS A FLOOR COVERING DIVIDER, SAID COVER PLATES BEING ADAPTED TO ENGAGE SAID SPACER STRIPS IN EITHER OF THE SAID TWO POSITIONS.