Abstract: A pool cleaner including a paddle wheel mechanism positioned within a fluid path of the pool cleaner. The paddle wheel mechanism includes a housing that directs fluid from the fluid path into a first flow path through a first inlet and a second flow path through a second inlet, where the first flow path and the second flow path pass separately through the housing and recombine before an outlet portion. A paddle wheel shaft is supported by the housing, and a first paddle wheel and a second paddle wheel are supported by the paddle wheel shaft. The first paddle wheel is configured to rotate the paddle wheel shaft responsive to fluid directed across the first paddle wheel through the first flow path. The second paddle wheel is configured to rotate the paddle wheel shaft responsive to fluid directed across the second paddle wheel trough the second flow path.

Abstract: Embodiments of the invention provide a paddle wheel mechanism for a pool cleaner. The paddle wheel mechanism includes a housing, a paddle wheel shaft supported by the housing, a first paddle wheel, and a second paddle wheel. The housing directs fluid from a fluid path of the pool cleaner into a first flow path and a second flow path. The first paddle wheel is supported by the paddle wheel shaft and is positioned within the housing along the first flow path. The second paddle wheel is supported by the paddle wheel shaft and is positioned within the housing along the second flow path. The first paddle wheel rotates responsive to fluid directed along the first flow path, and the second paddle wheel rotates responsive to fluid directed along the second flow path.

Abstract: Embodiments of the invention provide a paddle wheel mechanism for a pool cleaner. The paddle wheel mechanism includes a housing, a paddle wheel shaft supported by the housing, a first paddle wheel, and a second paddle wheel. The housing directs fluid from a fluid path of the pool cleaner into a first flow path and a second flow path. The first paddle wheel is supported by the paddle wheel shaft and is positioned within the housing along the first flow path. The second paddle wheel is supported by the paddle wheel shaft and is positioned within the housing along the second flow path. The first paddle wheel rotates responsive to fluid directed along the first flow path, and the second paddle wheel rotates responsive to fluid directed along the second flow path.

Abstract: The present invention describes a method and a system for multi-level authentication of a user and a server. The user registration process in the invention enables user to personalize the web page of the server. Further, the user authentication takes place in a multi-step process including entering credentials such as user ID, subset of user's password, subset of shared secret and a One Time Password (OTP). The system of the present invention provides various means of entering the said credentials which prevents phishing attacks.