| 摘要 |
A bathtub drain closure having a strainer element with an internally threaded recess that engages male threads on the lower end of an upwardly extending post. The post has at least one transverse passageway containing a polymeric pin having ends that project slightly beyond the ends of the passageway. A stopper having a centrally disposed, internal bore slides up and down the post between open and closed positions. The central bore of the stopper has a stepped profile having upper and lower portions with an internal diameter slightly greater than the length of the polymeric pin and a middle portion with an internal diameter slightly less than the length of the polymeric pin, thereby causing the pin to be compressed into frictional engagement with the central bore as the stopper slides up and down between the open and closed positions.
|
