Thrust reversing device for fan type jet engines

Claim 1

IN A FAN JET ENGING OF THE TYPE INCLUDING A FAN COWL STRUCTURE MOUNTED EXTERIORLY UPON THE FORWARD PORTION OF THE ENGINE COWL AND DEFINING AN ANNULAR PASSAGE THEREBETWEEN THROUGH WHICH A REARWARDLY DIRECTED STREAM OF AIR PASSES TO PRODUCE A COMPONENT OF FORWARD THRUST, THE FAN COWL STRUCTURE INCLUDING SPACED-APART ANNULAR EXTERIOR AND INTERIOR WALL MEMBERS DEFINING A REARWARDLY OPENING ANNULAR CHAMBER THEREBETWEEN; A THRUST REVERSING DEVIC FOR REVERSING THE REARWARD FLOW OF AIR THROUTH THE ANNULAR PASSAGE BETWEEN THE FAN COWL STRUCTURE AND THE ENGINE COWL TO DIMINISH THE COMPONENT OF FORWARD THRUST PRODUCED THEREBY, SAID DEIVE COMPRISING A PLURALITY OF BLOCKER DOOR MEMBERS EACH HAVING MOUNTING CONNECTIONS WITH THE FAN COWL STRUCTURE FOR RECTILINEAR AND PIVOTAL SHIFTING MOVEMENT RELATIVE THERETO BETWEEN A NORMALLY RETRACTED FORWARD POSITION WITHIN THE ANNULAR CHAMBER OF THE FAN COWL STRUCTURE AND AN EXTENDED REARWARD POSITION EXTERIORLY OF THE FAN COWL STRUCTURE, AN ANNULAR COWL RING SHIFTABLY MOUNTED ON THE FAN COWL STRUCTURE FOR FORE-AND-AFT- TRANSLATION BETWEEN A NORMAL FORWARD POSITION AND A REARWARD POSITION, SAID FAN COWL RING WHEN IN SAID FORWARD POSITION CLOSING THE CHAMBER DEFINED BY THE EXTERIOR AND INTERIOR WALL MEMBERS OF THE FAN COWL STRUCTURE AND DEFINING A REARWARD EXTENSION OF THE FAN COWL STRUCTURE, AND SAID FAN COWL RING WHEN IN THE REARWARD POSITION BEING SPACED RERWARDLY OF THE OPENING OF THE FAN COWL STRUCTURE CHAMBER, MEANS INTERCONNECTING THE FAN COWL RING AND THE BLOCKER DOOR MEMBERS AND CAUSING SWINGING MOVEMENT OF THE BLOCKER DOOR MEMBER INTO OBSTRUCTING RELATION WITH RESPECT TO THE ANNULAR PASSAGE BETWEEN THE FAN COWL STRUCTURE AND THE ENGINE COWL DURING REARWARED MOVEMENT OF SAID BLOCKER DOOR MEMBERS AND SAID FAN COWL RING, TO THEREBY REVERSE THE REARWARD FLOW OF AIR THROUGH THE ANNULAR PASSAGE AND TO DIMINISH THE FORWARD COMPONENT OF THRUST PRODUCED THEREBY, MEANS CARRIED BY SAID FAN COWL STRUCTURE AND OPERATIVELY CONNECTED WITH SAID BLOCKER DOOR MEMBERS AND SAID FAN COWL RING FOR PRODUCING FORWARD AND REARWARD SHIFTING MOVEMENT OF THE BLOCKER DOOR MEMBERS AND SAID FAN COWL RING, SAID MOUNTING CONNECTION FOR EACH BLOCKER DOOR MEMBER INCLUDING A PLURALITY OF CIRCUMERENTIALLY SPACEDAPART TRAFK MEMBERS MOUNTED WITHIN THE CHAMBER OF THE FAN COWL STRUCTURE AND EXTENDING AXIALLY THEREOF, THE IMPROVEMENT COMPRISING A PAIR OF GENERALLY RECTANGULAR SPAPED TRACK ENGAGING SLIDE ELEMENTS SUPPORTING EACH BLOCKER DOOR MEMBER FOR SLIDING AND PIVOTAL MOVEMENT BETWEEN A PAIR OF ADJACENT GENERALLY CHANNEL SHAPED TRACK MEMBERS,. SAID SLIDE ELEMENTS BEING FORMED OF A NON-METALLIC, GENERALLY NONMALLEABLE MATERIAL HAVING A LOW COEFFICIENT OF FRICTION, EACH SLIDE ELEMENT BEING PIVOTALLY MOUNTEDIN ONE SIDE OF THE ASSOCIATED BLOCKER DOOR MEMBER AND BEING SLIDABLE IN RELATIVELY CLOSED TOLERANCE RELATION IN THE ADJACENT TRACK MEMBER DURING FORE-AND-AFT SHIFTING MOVEMENT OF THE ASSOCIATED BLOCKER DOOR MEMBER.