Process of making reinforced flexible plastic tubing

Claim 1

A CONTINUOUS PROCESS FOR THE PRODUCTION OF REINFORCED FLEXIBLE PLASTIC HOSE, COMPRISING: CONTINUOUSLY PASSING A SELF-SUPPORTING CLOSELY-WOVEN HOSE-FORMER THROUGH A FLUID PLASTISOL BATH; PROVIDING SUFFICIENT CONTACT TIME IN SAID BATH FOR SAID PLASTISOL TO PENETRATE SAID HOSE-FORMER AND TO FORM AN INNER COATING OF PREDETERMINED THICKNESS, CONTINUOUSLY WITHDRAWING THE RESULTING COATED HOSEFORMER FROM SAID FLUID PLASTISOL BATH, MOVING SAID COATED HOSE-FORMER IN SUBSTANTIALLY VERTICAL MANNER FOR A SUBSTANTIAL DISTANCE, DURING SAID UPWARD MOTION, HEATING SAID COATED HOSE-FORMER AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO CAUSE THE SETTING OF SAID PLASTISOL, THEREAFTER REGULATING THE TEMPERATURE OF THE RESULTING COATED HOSE IN PREPARATION FOR IMMERSION IN A SECOND FLUID PLASTISOL BATH, COMMENSURATE WITH THE THICKNESS OF COATING TO BE ADDED OVER THE AFORESAID OUTER SURFACE OF SAID COATED HOSE, CONTINUOUSLY IMMERSING SAID COATED HOSE AT SUCH TEMPERATURE IN A SECOND FLUID PLASTISOL BATH, PROVIDING SUFFICIENT CONTACT TIME IN SAID SECOND BATH FOR THE FLUID PLASTISOL CONTAINED THEREIN TO FORM AN ADDITIONAL OUTER COATING OF PREDETERMINED THICKNESS OVER SAID COATED HOSE, CONTINUOUSLY WITHDRAWING THE RESULTING RE-COATED HOSE FROM SAID SECOND FLUID PLASTISOL BATH, MOVING SAID RECOATED HOSE UPWARDLY IN A SUBSTANTIALLY VERTICAL MANNER FOR A SUBSTANTIAL DISTANCE, AND, DURING SAID UPWARD MOTION, HEATING SAID RE-COATED HOSE AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO CAUSE THE SETTING OF THE OUTERMOST PLASTISOL COATING.