| 摘要 |
The invention relates to a roll and press gas lighter which is rendered child resistant by frictionally retarding the wheel assembly, making it difficult for a child to rotate it. The wheel assembly may have a serrated axle 33 rotating in a serrated bearing 32; the periphery or sides of the thumbwheel may have projections which engage with the lever or lighter body (Fig 2b). The wheel assembly may be formed in two parts, urged apart by an internal spring so as to frictionally engage in frustoconical bearings (fig 4b); alternatively the wheel assembly may rotate frictionally around a fixed axle (fig 5b). The wheel assembly may be retarded by a rubber wheel or a fixed leaf sprint (figs 6 and 7). Alternatively the flint may be provided with a strong spring to retard the sparkwheel, and the sparkwheel may be indented to engage with the flint (not illustrated). |
