Thermally adjusted casting blade

Claim 1

A CONTROL UNIT FOR CONTROLLING THE MOVEMENT OF A CASTING BLADE DURING THE PRODUCTION OF A FILM, THE CONTROL UNIT COMPRISING AN ESSENTIALLY ELONGATE HOLLOW BODY PORTION HAVING ATTACHMENT MEANS LOCATED THEREON, ELECTRICAL HEATING MEANS ADJACENT THE BODY PORTION INTERMEDIATE THE ENDS THEREOF, HEAT DISSIPATION MEANS LOCATED ADJACENT THE BODY PORTION TO FACILITATE COOLING THEREOF, TEMPERATURE SENSING MEANS ADAPTED TO SENSE THE TEMPERATURE OF SAID BODY PORTION, AND ELECTRICAL POWER SOURCE MEANS COUPLED TO THE HEATING MEANS, WHEREBY A FLOW OF ELECTRICAL CURRENT THROUGH SAID ELECTRICAL HEATING MEANS WILL HEAT THE BODY PORTION DISCONTINUANCE OF CURRENT TO THE ELECTRICAL HEATING AND DISCONTINUANCE OF CURRENT TO THE ELECTRICAL HEATING MEANS WILL RESULT IN COOLING OF THE BODY PORTION AND CONSEQUENTLY A CONTRACTION THEREOF.

Claim 3

THE METHOD OF AUTOMATICALLY ADJUSTING A BELT AND CASTING BLADE USED IN FORMING A THIN FILM IN CONJUNCTION WITH A REVOLVING DRUM COMPRISING THE STEPS OF DETECTING FILM THICKNESS VARIATIONS IN THE FORM OF AN ELECTRICAL SIGNAL TO A PLURALITY OF CONTROL UNITS, HEATING THE CONTROL UNITS BY AN ELECTRICAL MEANS TO A PREDETERMINED TEMPERATURE AS INDICATED BY TEMPERATURE SENSING MEANS, CAUSING AN ELONGATION IN THE BODY PORTION OF THE CONTROL UNIT, THEREBY MOVING A PORTION OF THE CASTING BLADE IN CLOSER PROXIMITY WITH RESPECT TO THE DRUM SURFACE SHOULD THE THICKNESS GAUGE INDICATE A THICK FILM AND DIRECTING AN AIRSTREAM AROUND AND THROUGH THE HEAT DISSIPATION PROTUBERANCES OF THE CONTROL UNIT, TO CAUSE A CONTRACTION IN THE BODY PORTION OF THE CONTROL UNIT, WHEN THE ELECTRIAL VOLTAGE MEANS IS INACTIVATED, THEREBY MOVING A PORTION OF THE CASTING BLADE AWAY FROM THE DRUM SURFACE WHEN THE FILM IS TOO THIN.

Claim 4

THE METHOD OF AUTOMATICALLY ADJUSTING A BELT AND CASTING BLADE USED IN FORMING A THIN FILM IN CONJUNCTION WITH A REVOLVING DRUM COMPRISING THE STEPS OF DETECTING FILM THICKNESS VARIATIONS IN THE FORM OF AN ELECTRICAL SIGNAL TO A PLURALITY OF CONTROL UNITS, HEATING THE CONTROL UNITS BY AN ELECTRICAL MEANS TO A PREDETERMINED TEMPERATURE AS INDICATED BY TEMPERATURE SENSING MEANS, CAUSING AN ELONGATION IN THE BODY PORTION OF THE CONTROL UNIT, THEREBY MOVING A PORTION OF THE CASTING BLADE IN CLOSER PROXIMITY WITH RESPECT TO THE DRUM SURFACE SHOULD THE THICKNESS GAUGE INDICATE A THICK FILM AND DIRECTING AN AIRSTREAM AROUND AND THROUGH THE HEAT DISSIPATION PROTUBERANCES OF THE CONTROL UNIT, TO CAUSE A CONTRACTION IN THE BODY PORTION OF THE CONTROL UNIT, WHEN THE ELECTRIAL VOLTAGE MEANS IS INACTIVATED, THEREBY MOVING A PORTION OF THE CASTING BLADE AWAY FROM THE DRUM SURFACE WHEN THE FILM IS TOO THIN.