| 摘要 |
A bumper for an umbrella is made of resilient material and is an undulating tube composed of a securing end ( 32 ), a serpentine middle portion ( 34 ), an abutting end ( 36 ) and a straight through hole (not numbered) defined through securing end ( 32 ), the serpentine middle portion ( 34 ) and the abutting end ( 36 ). The bumper is compressed at the serpentine middle portion ( 34 ) to damp the shock caused by bumping of a sliding ring.
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