Snow blower chute

Claim 1

A SNOW EJECTING CHUTE FOR SNOW BLOWERS COMPRISING A FIRST CURVED CHUTE PORTION ADAPTED TO BE MOUNTED ON THE SNOW RECEIVING CASING OF A SNOW BLOWER, A SECOND CURVED CHUTE PORTION HAVING A SUBSTANTIALLY CHANNEL SHAPE CROSS-SECTION AND OVERLAPPING AND IN TELESCOPIC ENGAGEMENT WITH SAID CHUTE PORTION, A FRAMEWORK RIGID WITH SAID FIRST CHUTE PORTION AND EXTENDING TOWARDS THE CENTER OF CURVATURE THEREOF, ARMS PIVOTED AT SPACED PIVOT POINTS ON SAID FRAMEWORK AND AT THE ENDS OF SAID SECOND CHUTE PORTION, POWER MEANS FOR PIVOTING SAID ARMS AND THUS DISPLACE SAID SECOND CHUTE PORTION WITH RESPECT TO SAID FIRST PORTION BETWEEN A RETRACTED POSITION AND AN EXTENDED POSITION, CHUTE SECTORS OF CHANNEL SHAPE CROSS-SECTION AND IN TELESCOPIC ENGAGEMENT FORMING AN EXTENSION FOR SAID SECOND CHUTE PORTION, SAID SECTORS BEING PIVOTED ONE TO ANOTHER AND TO THE UPPER END OF SAID SECOND CHUTE PORTION, A YOKE MEMBER PIVOTALLY CONNECTED TO SAID SECOND CHUTE PORTION ADJACENT SAID SECTORS, AND PIVOTALLY LINKED TO SAID SECTORS, AT LEAST ONE OF THE ARMS SUPPORTING SAID SECOND CHUTE PORTION ON SAID FRAMEWORK PROVIDED WITH A CRANK ARM AND A LINK PIVOTALLY CONNECTING SAID CRANK ARM TO SAID YOKE IN ORDER THAT PIVOTING MOVEMENT OF SAID CRANK ARM WITH RESPECT TO SAID SECOND CHUTE PORTION WILL CAUSE PIVOTING OF SAID YOKE ON SECOND CHUTE PORTION, AND THUS PIVOTAL MOVEMENT OF SAID SECTORS IN ORDER TO FORM A HIGHLY CURVED EXTENSION FOR SAID CHUTE DURING EXTENSION MOVEMENT OF SAID SECOND CHUTE PORTION.