Closure hinge

Claim 1

A HINGE AND HOLD OPEN COMPRISING, IN COMBINATION, A HINGE BOX MEMBER INCLUDING AT LEAST ONE WALL, A HINGE ARM MEMBER ADAPTED TO BE PIVOTALLY CONNECTED TO SAID BOX FOR SWINGING MOVEMENT RELATIVE TO SAID WALL BETWEEN OPEN AND CLOSED POSITIONS, A GENERALLY L-SHAPED RESILIENT MEMBER HAVING ONE LEG THEREOF PIVOTALLY CONNECTING SAID HINGE MEMBERS AND THE OTHER LEG THEREOF EXTENDING GENERALLY PARALLEL TO THE PATH OF SWINGING MOVEMENT OF SAID ARM MEMBER AND BEING TORSIONALLY MOVEABLE ABOUT ITS AXIS, SAID OTHER LEG INCLUDING FIRST DETENT SHOULDER MEANS, MEANS ON SAID HINGE BOX MEMBER SECURING SAID OTHER LEG THERETO AND PERMITTING SAID TORSIONAL MOVEMENT THEREOF ABOUT ITS AXIS, SECOND DETENT SHOULDER SHOULDER MEANS ON SAID HINGE ARM MEMBER, MOVEMENT OF SAID HINGE ARM MEMBER RELATIVE TO SAID HINGE BOX MEMBER TO OPEN POSITION CAUSING SAID SECOND DETENT SHOULDER MEANS TO ENGAGE SAID FIRST DETENT SHOULDER MEANS AND TWIST SAID OTHER LEG ABOUT ITS AXIS AS SAID DETENT SHOULDER MEANS MOVE RELATIVE TO EACH OTHER INTO OPPOSITE ENGAGEMENT TO PROVIDE A RELEASABLE HOLD OPEN, SAID OTHER LEG BEING UNTWISTED WHILE SAID FIRST SHOULDER MEANS IS IN SAID OPPOSITE ENGAGEMENT WITH SAID SECOND SHOULDER MEANS.