| 摘要 |
The non-widened pipe section (20) is so inserted that, in longitudinal section, an S-shaped spring with a connecting pipe section (22) is developed. The connecting pipe section is longitudinally slotted, as is also the non-widened pipe section. The slotted pipe areas have a somewhat radial V-formation. A corrugated tube (13) in gaslight union with the connections (11,12) covers over the central part (15). The non-widened pipe section has a widened union (16) at the end turned away from the S-spring for fixture of an end of the corrugated tube.
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