| 摘要 |
A shower drain assembly (10) is provided for use with a shower having a base drain opening. The drain assembly includes a drain fitting (12), an annular pressure plate (26), and an annular collar (28). The drain fitting has an upper lateral flange (14) and an upright cylindrical portion (16) extending downward from the underside of the flange. The cylindrical portion includes a number of shelves (18) extending laterally. Spaces (19) are available between shelves. The annular collar (28) includes an inner diameter with a number of ribs (30) extending laterally inward from the collar inner diameter surface. The collar also includes a number of holes (34), each hole being adapted to engage a corresponding fastener (32). During use, the drain fitting is inserted downward through the drain hole and is stopped by the flange; the pressure plate and collar are slipped upward around the drain fitting cylindrical portion, with the ribs passing through the cylindrical portion spaces; the collar is rotated so that the bottom of the ribs rest against the upper surface of the shelves; the fasteners are inserted upward into the holes and are made to create an upward force on the pressure plate and a downward force on the collar. The collar ribs engage the shelves and thereby pull the fitting downward against the shower.
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