Folding door assembly and mounting units therefor

Claim 1

FOR USE WITH TRACK MEANS IN AN UPPER MOUNTING UNIT AT A DOORWAY HEADER FOR THE UPPER END OF AN OUTER DOOR PANEL OF A FOLDING ASSEMBLY, A TRAVELING UPPER MOUNTING UNIT COMPRISING: (A) A STEPPED PIVOT PIN HAVING AN OUTER END, (B) A SLEEVE ADAPTED FOR FRICTIONAL RETENTION IN A RECRESS IN THE DOOR PANEL EXTENDING DOWNWARD FROM THE UPPER END OF THE LATTER INWARD OF THE OUTER VERTICAL EDGE THEREOF AND FREELY RECEIVING THE PIVOT PIN THERETHROUGH FOR AXIAL ROTATION AND LONGITUDINAL SLIDING MOVEMENT, (C) THE SLEEVE HAVING AN INNER SHOULDER SPACED FROM AND FACING THE STEP OF THE PIVOT PIN, (D) AN ADJUSTABLE STOP NUT THREADED ONTO THE INNER END OF THE PIN AND SEATED AGAINST ROTATION IN A RECESS IN THE INNER END OF THE SLEEVE, AND AN ADJUSTING NUT FIXED TO THE EXPOSED OUTER END PORTION OF THE PIN FOR ROTATING THE LATTER RELATIVE TO THE STOP NUT FOR ADJUSTING THE PIN VERTICALLY RELATIVE TO THE SLEEVE AND DOOR PANEL, (E) RESILIENT MEANS POSITIONED BETWEEN THE SLEEVE SHOULDER AND PIVOT PIN STEP FOR URGING THE PIVOT PIN TO ITS LIMIT OF MOVEMENT IN THE DIRECTION OF ITS OUTER END, AND (F) DOOR GUIDE MEANS PIVOTED TO THE OUTER END OF THE PIN AND ADAPTED FOR TRAVELING ENGAGEMENT WITH THE TRACK MEANS.