Air distributing devices with temperature-responsive pattern control

Claim 1

AN AIR DISTRIBUTING DEVICE COMPRISING A BOTTOM WALL, A REAR WALL HAVING FORWARDLY-DIRECTED END PORTIONS AND A FORWARDLY-DIRECTED UPPER PORTION EXTENDING ALONG THE UPPER PART OF SAID REAR WALL BETWEEN SAID END PORTIONS, SAID REAR WALL THEREBY DEFINING A CAVITY, A FRONT WALL OPPOSITE SAID CAVITY AND SPACED FROM SAID REAR WALL, PASSAGE MEANS IN SAID BOTTOM WALL FOR ADMITTING FORCED AIR INTO THHE LOWER PART OF SAID DEVICE BETWEEN SAID REAR WALL AND FRONT WALL, MEANS MOUNTING SAID FRONT WALL FOR PIVOTAL MOVEMENT ABOUT A PIVOT AXIS ALONG THE LOWER PORTION OF SAID FRONT WALL FOR PIVOTAL MOVEMENT OF SAID FRONT WALL TOWARD AND AWAY FROM SAID REAR WALL, RESILIENT BIAS MEANS DRAWING SAID FRONT WALL TOWARD SAID REAR WALL, A CAM MEMBER MOUNTED IN SAID DEVICE AND HAVING A CAMMING SURFACE ACTING AGAINST SAID FRONT WALL, AND TEMPERATURERESPONSIVE MEANS OPERATIVELY ASSOCIATED WITH SAID CAM MEMBER AND RESPONSIVE TO THE TEMPERATURE OF THE AIR FLOWING THROUGH SAID DEVICE FOR MOVING SAID CAM MEMBER AND ALLOWING SAID FRONT WALL TO PIVOT IN RESPONSE TO TEMPERATURE CHANGES WHICH ACTIVATE SAID TEMPERATURERESPONSIVE MEANS.