| 摘要 |
A reservoir brush useful for washing automobiles and the like has a vacuum creating pump operable in a chamber in which an expandable bladder resides in order to draw fluid through the head of a brush to which the bladder is attached and into the bladder, wherein the chamber is vented, facilitating collapse of the bladder and run-out of the fluid when the pump is not operating, the pump including a check valve facilitating the pumping action.
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