Demistifier screen and support therefor

Claim 1

A SELF-SUPPORTING SCREEN STRUCTURE FOR USE INTERNALLY WITHIN A CYLINDRICAL VESSEL THROUGH WHICH A FLUID FLOWS COMPRISING, IN COMBINATION, AN ANNULAR MEMBER DEFINING A PLANE AND HAVING AT LEAST ONE INTERRUPTION THEREIN TO PROVIDE SPACED FACING END ELEMENTS, MEANS FOR ADJUSTING THE SPACING BETWEEN SAID END ELEMENTS TO THEREBY EXPAND THE OUTSIDE DIAMETER OF SAID ANNULAR MEMBER INTO FRICTIONAL ENGAGEMENT WITH THE INTERIOR WALLS OF SAID VESSELS, A PLURALITY OF UPSTANDING ROD ELEMENTS HAVING ONE END SECURED TO AN INNER PORTION OF SAID ANNULAR MEMBER, SAID ROD ELEMENT EXTENDING IN A DIRECTION PERPENDICULAR TO THE PLANE OF SAID ANNULAR MEMBER, A PLURALITY OF INDIVIDUAL AND VARYING LENGTH TRANSVERSE BAR ELEMENTS EXTENDING SUBSTANTIALLY PARALLEL TO ONE ANOTHER, HAVING END PORTIONS ENGAGING SAID ROD ELEMENTS, AT LEAST ONE END PORTION OF EACH BAR ELEMENT HAVING A SLOT WHICH SLIDABLY ENGAGES AN ASSOCIATED ROD ELEMENT, EACH SAID SLOT BEING ELONGATED ALONG THE LENGTHWISE AXIS OF SAID BAR ELEMENTS FOR PERMITTING FREE RELATIVE MOVEMENT BETWEEN SAID ROD ELEMENTS AND ANNULAR MEMBER AS SAID ANNULAR MEMBER IS EXPANDED INTO CONTACT WITH SAID CLYINDRICAL VESSEL, AND PREVIOUS SCREEN MEANS ADAPTED TO EXTEND TRANSVERSELY COMPLETELY ACROSS SAID CYLINDRICAL VESSEL AND TO OVERLIE SAID BAR ELEMENTS, AND MEANS FOR SECURING SAID SCREEN MEANS TO SAID BAR ELEMENTS.