| 摘要 |
A paint roller frame and plastic cage assembly, the cage assembly comprising a plurality of circumferentially spaced, axially extending support rails joined together at their ends by inboard and outboard end caps and also intermediate their ends by one or more annular support members. The cage assembly is mounted for limited axial movement in opposite directions on the roller frame shaft, during which cam members on the radial inner walls of radially movable portions of the cage assembly move into and out of engagement with an outer surface of one or more hub assemblies mounted on the shaft. Engagement of the cam members with the hub assemblies causes the radially movable portions to move radially outwardly into frictional engagement with a roller cover when inserted over the cage assembly.
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