| 摘要 |
A submersible cleaner adapted for travelling across surfaces of swimming pools and which avoids significant wear on an associated suction pump includes a housing with a forward edge, a suction chamber within the housing and a vibratory oscillator positioned within the suction chamber to continuously vibrate the cleaner during operation. A shoe member is removably fitted to the bottom of the housing and has rows of segmented tread elements which are elongated in a direction parallel with the front edge of the housing and which are angled rearwardly from the bottom with respect to the direction of travel in order to cooperate with the vibratory movement and urge the cleaner along the direction of travel.
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