Direction selective unidirectional clutch assembly for a fluid meter counter module assembly and a fluid meter with a direction selective unidirectional clutch assembly

A direction selective unidirectional clutch assembly for a fluid meter counter module assembly, wherein the direction selective unidirectional clutch assembly comprises:

• a unidirectional clutch to selectively couple to and decouple from a driven shaft to drive a counter module, the unidirectional clutch selectively coupling to the driven shaft in response to rotation of a unidirectional clutch drive shaft in a first direction to activate the counter module for counting and selectively decoupling from the driven shaft in response to rotation of a unidirectional clutch drive shaft in a second direction to inhibit the counter module from counting;
• a direction selection drive shaft configured to rotate in response to a flow of fluid in the fluid meter, the direction selection drive shaft rotating in one direction in response to the flow of fluid in a first flow direction through the flow meter and rotating in an opposite direction to the one direction in response to the flow of fluid in a second flow direction;
• a drive selector mechanism to couple the direction selection drive shaft to the unidirectional clutch to select one of the first flow direction and the second flow direction of flow of the fluid to activate the counter module.