Patent ID: 6655193
Filing Date: 2003-12-02
Classification: G01M

Abstract:
A leakage detecting device for a cylinder of a vehicle engine having a water tank with an opening comprising:a cover adapted to be mounted on the opening of the water tank and having a through hole defined through the cover; a first cup connected to the cover and having a closed end and an opening end, a connecting tube having a first opening end extending through the closed end of the first cup and connected to the through hole in the cover and a second opening end extending into the first cup; a first base formed on the connecting tube and received in the first cup, the first base having a bottom separated from the closed end of the first cup so as to define a gap between the bottom of the base and the closed end of the first cup, the first base having multiple through holes defined through the first base and communicating with the gap between the first base and the closed end of the first cup, a first cap received in the first cup, pressed onto the first base and surrounding the second opening end of the connecting tube, the first cap having a closed end separated from the second opening end of the connecting tube and an opening end pressed onto the first base so as to define a first tortuous air channel in the first cup; a second cup mounted on the opening end of the first cup and having an opening end and a closed end mounted on the opening end of the first cup and with a bottom hole defined through the closed end, a guide tube mounted on the closed end of the second cup and communicating with the bottom hole in the closed end of the second cup and having a top opening end; a second base formed on the guide tube and received in the second cup, the second base having a bottom separated from the closed end of the second cup so as to define a gap between the bottom of the second base and the closed end of the second cup, and the second base having multiple through holes defined through the second base and communicating with the gap between the second base and the closed end of the second cup; and a second cap received in the second cup, pressed onto the second base and surrounding the top opening end of the guide tube, the second cap having a closed end separated from the top opening end of the guide tube and an opening end pressed onto the second base so as to define a second tortuous air channel in the second cup.