Patent ID: 7163193

Claim:
A water flow-controlling device for a cooling system of a vehicle comprising a tube having an inner wall; a front opening; a rear opening communicating with the front opening; a side opening communicating with the front and rear openings; a branch tube formed on the side opening; and a rear bracket mounted on the inner wall near the rear opening; a shaft mounted movably in the rear bracket and having an outer wall; a front end; a rear end extending through the rear bracket; and a head formed on the front end; a block mounted movably on the shaft, selectively obstructing the communication between the front opening and the side opening of the tube and having a front surface abutting the head on the shaft; and a rear surface; a washer mounted securely on the shaft and having a front surface; and a rear surface; a spring mounted between the rear surface of the block and the front surface of the washer; a mounting board attached to the rear opening of the tube and having a through hole formed through the mounting board and communicating with the rear opening of the tube; a case being hollow, attached to the mounting board and having a front opening communicating with the through hole in the mounting board; and a reciprocating assembly mounted in the case and connecting to the shaft to move the shaft to align with the tube.