Invention Grant
US09567946B2 Assembling unit, pump and fuel-vapor-leakage check system 有权
组装单元,泵和燃油蒸汽泄漏检查系统

Assembling unit, pump and fuel-vapor-leakage check system
Abstract:
A first tubular portion has a cross sectional shape which is a non-perfect circle relative to an axis thereof. A second tubular portion is disposed concentrically with the first tubular portion. The second tubular portion has a cross sectional shape relative to its axis, which is a congruent shape of the cross sectional shape of the first tubular portion. A sealing member is disposed between the first tubular portion and the second tubular portion for sealing therebetween. The sealing member has a cross sectional shape of which length parallel to its axis is greater than length which is perpendicular to the axis.
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