| 摘要 |
A safety device for preventing the loss of a container closure plug, comprising a retaining member disposed on, and preferably secured to, the container, and a spiral to which the closure plug is connected and which surrounds the said closure plug several times, the retaining member, spiral and closure plug or a part to which the spiral is attached and which is itself fastened to the closure plug being integrally made from a plastics material which allows resilient deformation of the spiral. The closure plug includes a piston portion which is received in the interior of the container to displace a selected quantity of fluid therein into an inlet opening to an induction manifold of an engine.
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