US Patent 9408517 Mopping device

A mopping device includes a mopping portion, a fluid release device for releasing fluid to at least one of a surface to be mopped and the mopping portion, a handle configured to be gripped by a user to control the mopping portion, and a reservoir for storing fluid. The reservoir can include an expandable bladder. The reservoir also can be configured such that air need not be evacuated from the reservoir during tilling of the reservoir. The mopping device also can be part of a mopping system, in which a refill reservoir is provided to refill the reservoir of the mopping device.