End construction for shade roller

Claim 1

AN ADJUSTABLE ROLLER CONSTRUCTION FOR WINDOW SHADES, COMPRISING: A SHADE ROLLER HAVING A MAIN BODY PORTION CHARACTERIZED BY AN OPEN TUBULAR GUDGEON PIN END AND A MOTOR END, SAID MOTOR END HAVING A FLAT SPEAR FOR MOUNTING THE ROLLER; A CYLINDRICAL PLUG BODY ARRANGED TO BE INSERTABLE IN SAID TUBULAR END; A CAP STRUCTURE FOR THE END OF SAID PLUG BODY; SAID CAP STRUCTURE HAVING AN END PORTION AND A TUBULAR SKIRT HAVING A DIAMETER SUFFICIENT TO TELESCOPE OVER SAID PLUG END; AT LEAST TWO OPPOSITELY DISPOSED RESILIENTLY FLEXIBLE WINGS CUT FROM SAID CAP STRUCTURE SKIRT AND EXTENDING OUTWARDLY AT AN ANGLE FROM SAID CAP AND TOWARD SAID MAIN BODY; SAID ANGLE OF EXTENSION OF SAID WINGS BEING SUCH THAT THE ENDS OF SAID WINGS ARE WITHIN THE CIRCUMFERENTIAL SILHOUETTE OF SAID MAIN BODY; SAID WINGS ABUTTING SAID TUBE END WHEN SAID PLUG IS INSERTED THEREINTO TO PREVENT THE PLUG FROM BEING FORCED COMPLETELY INSIDE THE ROLLER TUBE; SAID WINGS BEING RESILIENTLY DEFORMABLE TOWARD SAID BODY AGAINST THEIR INHERENT OUTWARD BIAS TO PASS INTO SAID ROLLER TUBE, TO THERE BEAR OUTWARDLY AGAINST THE INNER WALLS OF THE TUBE AND AUGMENT THE FRICTIONAL ENGAGEMENT OF TUBE AND BODY.