Easel type display device

Claim 1

IN A FOLDABLE DISPLAY DEVICE, PLURALITY OF HINGEDLY CONNECTED PRIMARY MEMBERS FOLDABLE INTO BOOK FORM AND COMPRISING A BACKBONE AND COVER MEMBERS, A SUPPLEMENTARY MEMBER HINGED TO ONE OF SAID PRIMARY MEMBERS FOLDABLE REARWARDLY THEREOF TO PROVIDE MEANS FOR SUPPOTING SAID DEVICE AT AN UPWARD AND REARWARD INCLINATION ON A SUPPORTING SURFACE THEREFOR, SAID DEVICE NORMALLY BEING FOLDED INTO BOOK FORM WITH SAID SUPPLEMENTARY MEMBER DISPOSED IN OVERLYING PARALLEL RELATION TO SAID ONE OF SAID PRIMARY MEMBERS AND BEING FOLDABLE DOWNWARDLY AND REARWARDLY IN A SETTING-UP OPERATION TO SET-UP POSITION, AND A SUBSTANTIALLY RIGID RESILIENT BRACE MEMBER DISPOSED BETWEEN SAID ONE OF SAID PRIMARY MEMBERS AND SUPPLEMENTARY MEMBER AND HAVING A TRANSVERSE BEND PROVIDING A RELATIVELY SHORT ARM SECURED TO SAID ONE OF SAID PRIMARY MEMBERS AND SAID SUPPLEMENTARY MEMBER AND A RELATIVELY LONG SUBSTANTIALLY STRAIGHT ARM, SAID RELATIVELY LONG ARM BEING CONFINED UNDER TENSION BETWEEN SAID ONE OF SAID PRIMARY MEMBERS AND SAID SUPPLEMENTARY MEMBER WHEN SAID DEVICE IS FOLDED AND OTHERWISE FREE AND EFFECTIVE FOR EXERTING OUTWARD PRESSURE ON SAID SUPPLEMENTARY MEMBER AND THEREBY MOVING THE LATTER DOWNWARDLY AND REARWARDLY TO SET-UP POSITION WITH SAID LONGER ARM PORVIDING A SUPPORTING BRACE EXTENDING BETWEEN SAID ONE OF SAID PRIMARY MEMBERS AND SAID SUPPLEMENTARY MEMBER, INCIDENT TO A SETTING-UP OPERATION.