Fiberglas structural member and method of making same

Claim 1

IN AN AERIAL PLATFORM TRUCK HAVING A FRAME, A TABLE MOUNTED ON SAID FRAME FOR ROTATION ON A VERTICAL AXIS, A FIRST BOOM MOUNTED ON SAID TABLE FOR SWINGING MOVEMENT ON A HORIZONTAL AXIS AND A STUB SECOND BOOM MOUNTED ON THE OUTER END OF THE FIRST BOOM FOR ROTATION ON A SECOND HORIZONTAL AXIS, THE IMPROVEMENT OF WHICH COMPRISES AN ELONGATED, TUBULR BOOM ELEMENT CONSTRUCTED OF SYNTHETIC RESIN MATERIAL, SECURED TO AND EXTENDING OUTWARDLY FROM SAID STUB BOOM FOR MOVEMENT THEREWITH; A FILLING WITHIN SAID ELEMENT OF SOLIDIFIED SYNTHETIC RESIN FOAM SUBSTANCE; AN OPERATOR BASKET CONSTRUCTED OF SYNTHETIC RESIN MATERIAL AND SWINGABLY SECURED TO THE OUTER END OF SAID ELEMENT; AND CONTROL MEANS ON THE FRAME FOR EFFECTING ROTATION OF THE TABLE AND SWINGING MOVEMENT OF SAID FIRST AND SECOND BOOMS, THE ADDITIONAL IMPROVEMENT OF WHICH COMPRISES AN ELONGATED CABLE FOR EACH OF SAID CONTROL MEAND AND EXTENDING LONGITUDINALLY OF SAID ELE-