Panic release door centering stop

Claim 1

A CENTERING STOP FOR A CENTER HUNG SWINGING DOOR, COMPRISING A STOP MEMBER ADAPTED TO BE MOUNTED IN A DOOR FRAME FOR SHIFTING MOVEMENT IN A PLANE NORMAL TO A CLOSED DOOR HUNG IN THE FRAME, A SUPPORT FOR SAID STOP MEMBER INCLUDING MEANS FOR MOUNTING SAID STOP MEMBER FOR PIVOTAL AND TRANSLATIVE MOVEMENT IN SAID PLANE AND WITH RESPECT TO SAID SUPPORT, SAID STOP MEMBER HAVING FINGER MEANS THEREON FOR PROJECTING FROM SAID FRAME INTO THE PATH OF SAID DOOR ENGAGING SAID DOOR AT ITS CENTERED CLOSED POSITION, SAID FINGER MEANS CO-ACTING WITH SAID DOOR TO ROCK SAID STOP MEMBER PIVOTALLY AND RETRACT SAID FINGER OUT OF THE PATH OF SAID DOOR WHEN SAID DOOR IS FORCED TO SWING OUTWARDLY BEYOND ITS CENTERED POSITION, PLUNGER MEANS NORMALLY OPPOSING THE PIVOTAL MOVEMENT OF SAID STOP MEMBER AND RESILIENTLY YIELDABLE UNDER A PREDETERMINED FORCE APPLIED TO SAID DOOR, SAID LAST NAMED MEANS BEING OPERABLE TO RETURN SAID STOP MEMBER TO ITS FINGER PROJECTING POSITION AFTER THE MOVEMENT OF SAID DOOR OUTWARDLY BEYOND ITS SAID CENTERED POSITION, SAID FINGER MEANS BEING ADAPTED TO CO-ACT WITH SAID DOOR DURING THE RETURN MOVEMENT THEREOF IN THE INWARD DISRECTION FOR ROCKING SAID STOP MEMBER TO RETRACT SAID FINGER FROM THE PATH OF SAID DOOR AND TO SHIFT SAID STOP MEMBER TRANSLATIVELY BEYOND THE INFLUENCE OF SAID PLUNGER MEANS, MEANS FOR LIMITING THE TRANSLATIVE MOVEMENT OF SAID STOP MEMBER, SAID MEANS FOR RETURNING SAID STOP MEMBER TRANSLATIVELY AND PIVOTALLY TO ITS NORMAL FINGER PROJECTING POSITION WHEN SAID DOOR HAS SWUNG INWARDLY PAST ITS SAID CENTERED POSITION.