| 摘要 |
A plunger (10) for use with a narrow throat toilet and also can be used equally well with older toilets. The plunger head (21) has two sections, a bellows section (18) and an elongated constant average diameter section (26) preferably having sealing shells (27, 28) of different diameters and a lip (29). The plunger (10) can interface with the mouth of the toilet throat such that the lip extends just into the throat of the toilet and thereby creating a mechanical seal. The elongated section (26) can operate so the lip (29) extends inside the throat and the first sealing shell (27) seats against the throat to create a pressure seal or to form a mechanical seal. Another embodiment comprises a lip with a flattened surface that seats around toilet throats to create a pressure seal against the toilet surface.
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