Patent ID: 6098456
Filing Date: 2000-08-08
Classification: G01F

Abstract:
Liquid meter, in particular a water meter, of the type comprising a housing (2) having two compartments (4, 5) comprising respectively a motor member (6) disposed in the path of movement of a flow (3) of the liquid to be measured and a counter (7) which, by demultiplication of a gear train (10), actuates an indicator (11) comprised by numerical drums (12), the transmission of the movement of the motor member (6) to the counter (7) being effected through a separation wall of the compartments (4, 5) with the aid of a magnetic drive device comprising a pair of magnets (8, 9), a first of said pair of magnets (8) associated with the motor member (6) having at least one face with double polarity (8') in magnetic equilibrium with a face of double polarity (9') of a second of said pair of magnets (9) associated with the counter (7),wherein each magnet (8, 9) has at least one double polarity on each of its other faces (8', 8"", 9', 9"").