Patent ID: 7255509

Claim:
A paint roller assembly comprising: a roller support including a head portion, a neck portion reduced in cross section from said head portion, and a support tube reduced in cross section from said neck portion and defining an axis, said roller support defining an axial hole extending through said support tube and said neck portion and into said head portion along said axis, said support tube having a peripheral wall, a plurality of spaced-apart apertures formed in said peripheral wall and in fluid communication with said axial hole, and a free end distal to said neck portion, said neck portion having a retaining part; an end cap sleeved on said free end of said support tube; a coupling unit; a roller unit including a tubular sleeve that has a first end portion coupled rotatably to said retaining part of said neck portion through said coupling unit, and a second end portion opposite to said first end portion and coupled to said end cap so as to be rotatable relative to said support tube, said roller unit further including a sponge body fixed around said tubular sleeve; and a handle connected to said head portion of said roller support; wherein said coupling unit is disposed between said retaining part and said first end portion of said tubular sleeve, and includes a tongue provided on one of said retaining part and said first end portion of said tubular sleeve, and a retaining groove formed in the other of said retaining part and said first end portion of said tubular sleeve.