| 摘要 |
1,219,174. Container closures. E. J. TOWNS. 3 April, 1968 [6 April, 1967], No. 16090/68. Heading B8T. A container 10, e.g. of plastics, is provided with an external shoulder 11 forming a ledge 13, a recessed portion 15 of the container wall lying between the shoulder 11 and a thickened peripheral lip 17. A safety cap 18 of similar material includes a side wall with an inwardly extending annular band 19, the cap 18 snap fitting on to the container 10. Cap removal means comprises a tab 22 integrally hinged to the top wall 21 of the cap 18, the tab normally fitting closely within a recess 23 in the centre of the wall 21. A deepened central portion 24 of the recess accommodates a complementally shaped island 34 with a serrated lower surface 37 which depends integrally from the tab 22, ribs being optionally provided to engage with grooves (27), Fig. 6 (not shown), on the longitudinal side walls of the deepened recess 24. The forward end of the flap 22 terminates in a thin flexible lip 36 which may be raised, e.g. by use of the fingernail, to swing the flap 22 out of the recesses 23, 24 about its hinged joint. The cap 18 then may be pulled away from the container 10 by means of the flap 22, gripping being facilitated by the serrations 37. In an alternative embodiment, Fig. 10 (not shown), the flap (22a) is provided at its outer end (36) with a frangible tab (38) secured to the cap top (18a) so that when the flap is initially raised this tab is broken along a score line (40), Fig. 11 (not shown), providing evidence of tampering. |
