US Patent 9173529 Bath chair

A bath chair having a reclining mechanism with enhanced operability and durability. A backrest is rotatable provided to bearing members at a rear of a base, an operating shaft is laid across a back of the backrest, a lever is provided to a center of the operating shaft. The operating shaft is biased so that the lever is pressed downward; abutment members fixed to both ends of the operating shaft and a step member having a plurality of steps provided to a rear of the bearing member abut against each other to support the backrest. When the lever is pulled up, the abutment members are rotated upward, the abutment between the step members and the abutment members are released, and then the backrest can be adjusted its inclination angle.