Bottom discharge bin latching assembly

Claim 1

IN A BIN HAVING A BOTTOM DISCHARGE OPENING THE IMPROVEMENT WHICH COMPRISES, IN COMBINATION, A COVER FOR SAID BOTTOM DISCHARGE OPENING AND A CAM LATCHING MECHANISM THEREFOR; SAID COVER HAVING MEANS PIVOTALLY ATTACHING IT TO A BOTTOM PORTION OF SAID BIN TO SWING DOWNWARDLY FROM A CLOSED POSITION TO AN OPEN POSITION, AND HAVING AN UPWARDLY CURVED EXTENSION ON A SIDE OPPOSITE SAID PIVOTING MEANS; SAID LATCHING MECHANISM COMPRISING: A. SUPPORTING MEANS EXTENDING VERTICALLY FROM A BOTTOM PORTION OF SAID BIN, SAID SUPPORTING MEANS HAVING AN ANGLED SLOT WITH AN OFFSET NOTCH BETWEEN THE BOTTOM AND TOP OF SAID SLOT, THE ANGULAR POSITION OF SAID ALOT BEING SUCH THAT THE BOTTOM OF SAID SLOT IS CLOSER TO SAID COVER PIVOTING MEANS THAT IS THE TOP OF SAID SLOT, SAID OFFSET BEING ON THE SIDE OF SAID SLOT AWAY FROM SAID COVER PIVOTING MEANS, B. A CAM HAVING AN EDGE PROJECTION EXTENDING AT ONE END, C. SHAFT MEANS PIVOTALLY SUPPORTING SAID CAM FOR PIVOTAL MOVEMENT ABOUT A SUBSTANTIALLY HORIZONTAL AXIS, SAID SHAFT MEANS BEING CARRIED BY SAID SLOT IN SAID SUPPORTING MEANS, SAID SHAFT MEANS BEING CAPABLE OF ENGAGEMENT WITH A TOOL TO ROTATE SAID CAM ABOUT ITS AXIS, WHEREBY, SAID UPWARDLY-CURVED EXTENSION OF SAID COVER IN ITS CLOSED POSITION RESTS ON AN END OF SAID CAM AND WHEN UNLATCHING SAID COVER BY ROTATING SAID CAM, SAID COVER DROPS AND SAID CURVED EXTENSION RESTS ON THE OPPOSITE END OF SAID CAM TO ACHIEVE A PARTIALLY OPEN POSITION, AND WHEREBY FURTHER ROTATION OF SAID CAM IN THE SAME DIRECTION, FORCES SAID PROJECTION AGAINST SAID COVER EXTENSION AND MOVES SAID SUPPORTING CAM SHAFT MEANS INTO SAID OFFSET NOTCH ALLOWING SAID COVER TO FALL CLEAR OF SAID LATCH MECHANISM TO A FULLY OPEN POSITION.