| 摘要 |
A zip pull 1 comprising a whistle 2 and a cord 3 connected thereto, the whistle comprising a cavity 4, the cavity comprising an aperture 5 for blowing air into the cavity, characterised in that the whistle further comprises a plurality of fingers 10,11 arranged proximate to the aperture and extending away from the cavity to define a tyre valve key 12. The fingers are preferably arranged equally around the aperture; there may be first and second fingers each comprising a planar gripping face 13. The whistle section is preferably cylindrical. When the key is placed on a tire valve, the whistle emits a noise if air is escaping through the valve. Also claimed is a method of removing a tyre valve. |
