Patent ID: 6901796

Claim:
A fluid level detecting device for detecting a fluid level by measuring an electrical resistance comprising: a float that is floated on fluid so that the float moves up and down according to variation in the fluid level; a float arm that is arranged to support the float and rotate according to the up and down movement of the float; a conductive resin float arm holder that is arranged to hold the float arm; a main body that is arranged to hold the float arm holder in a manner such that the float arm holder is rotatable; an electrical resistance element that is fixed to the main body and electrically connected to an external circuit; a sliding contact that is fixed to the float arm holder and electrically connected to an external circuit; and an electrical connector member that is arranged to electrically connect the float arm with the sliding contact, wherein the sliding contact slides on the electrical resistance element according to the rotation of the float arm while maintaining contact with the electrical resistance element, the sliding contact and the electrical resistance element develop an electrical resistance therebetween, the electrical resistance varying as the sliding contact slides on the electrical resistance element, and the conductive resin float arm holder electrically connects the float arm with the electrical resistance element via the sliding contact and the electrical connector member.