| 摘要 |
An apparatus for applying flowable material to a work surface includes a roller frame having a handle portion and an axle portion; a roller cover mounting structure rotatably mounted on the axle portion; a roller cover having an outer cover surface and engagingly fitted over the roller cover mounting structure, for gathering a quantity of the flowable material on the outer cover surface and transferring at least part of the quantity of flowable material to the work surface; and a mounting structure locking mechanism for locking the mounting structure against rotation relative to the roller frame. The locking mechanism preferably locks the mounting structure against rotation releasably, so that the roller cover transfers the flowable material by either rotating or by sliding against the work surface. The locking mechanism is located entirely within the roller to prevent it from being exposed to the flowable material, and operates with a magnet to retain it in either the locked or unlocked mode. The invention also contemplates a method of utilizing the foregoing apparatus by abruptly moving the apparatus to shift the magnet from one operating mode position to another, and vice versa, as well as performing the method remotely using a handle extension.
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