Mechanical device

Claim 1

IN A SYSTEM FOR CONTROLLING THE DOWNSHIFTING OF CHANGE SPEED, SHIFTABLE, TOOTHED ELEMENTS, THE COMBINATION COMPRISING: FIRST AND SECOND SHIFTABLE, INTERENGAGEABLE, TOOTHED ELEMENTS; DETECTOR MEAS SENSING THE RELATIVE ROTATIONAL VELOCITIES OF EACH OF SAID TOOTHED ELEMENTS; FIRST SIGNAL MEANS RESPONSIVE TO SAID DETECTOR MEANS FOR ACTUATION WHEN, AND ONLY WHEN, SAID FIRST TOOTHED ELEMENT IS RUNNING FASTER THAN THE SECOND TOOTHED ELEMENT, IS DIMINISHING ITS SPEED TO A POINT OF SYNCHRONISM WITH SAID SECOND TOOTHED ELEMENT, AND REACHES A FIRST TRIGGER SPEED OCCURRING BEFORE A POINT OF SYNCHRONISM IS REACHED WHEREUPON SAID FIRST SIGNAL MEANS WILL GIVE A SHIFT SIGNAL TO INITIATE INTERENGAGING OF SAID TOOTHED ELEMENTS; SECOND SIGNAL MEANS RESPONSIVE TO SAID DETECTOR MEANS FOR ACTUATION WHEN SAID FIRST TOOTHED ELEMENT IS RUNNING AT A ROTATIONAL SPEED SLOWER THAN SAID SECOND TOOTHED ELEMENT BUT IS INCREASING ITS SAID SPEED WITH RESPECT THERETO AND SPEED DIMINISHING MEANS RESPONSIVE TO ACTUATION OF SAID SECOND SIGNAL MEANS TO BRING ABOUT A DIMINISHING OF THE ROTATIONAL SPEED OF SAID FIRST TOOTHED ELEMENT, SAID DIMINISHING OCCURRING A DISCRETE TIME INTERVAL AFTER SAID ACTUATION, AND SAID SECOND SIGNAL MEANS INCLUDING MEANS SO RELATING SAME TO SAID DETECTOR MEANS THAT SAID SECOND SIGNAL MEANS ARE OPERATIVE AT A SECOND TRIGGER SPEED SELECTED WITH RESPECT TO THE RELATIVE SPEEDS OF SAID FIRST AND SECOND TOOTHED ELEMENTS THAT DURING SAID TIME INTERVAL THE SPEED OF SAID FIRST TOOTHED ELEMENT WILL OVERRUN TO A VALUE HIGHER THAN THE SAID FIRST TRIGGER SPEED AFTER WHICH SAID SPEED DIMINISHING MEANS WILL DIMINISH THE SPEED OF SAID FIRST TOOTHED ELEMENT TO SAID FIRST TRIGGER SPEED AND ACTUATE SAID FIRST SIGNAL MEANS TO COMPLETE A SHIFT.