Windshield washer pump drive mechanism

Details Windshield washer pump drive mechanism Windshield washer pump drive mechanism

B - Operations, Transporting

60

S

103/1

B60S 1/46 (2006.01)

Patent

CA 1143214

JOHN IZUMI ANGELO D'ORIO ACOM-lA-CANADA WINDSHIELD WASHER PUMP DRIVE MECHANISM ABSTRACT The pump action termination mechanism includes an indexable rachet wheel having evenly spaced, uniformly shaped teeth, provided to count a given number of strokes. After the given number of strokes, a substantially wedge- shaped cam, carried on the rachet wheel, is moved into position as the wheel is indexed, to engage a lip on the reciprocating piston rod to prevent further pump actuation. The structure of the cam and lateral movement of the piston rod permit same to cooperate in a manner which facilitates positioning of the lip relative to the cam, thereby eliminating the necessity for the presence of a flexible tooth on the rachet wheel, heretofore required to permit sufficient "yield" in the mechanism to prevent binding of the cam and lip.

386942

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