초록 ▼

A childproof safety screw cap and container having yieldable cap retainer means which are overcome, to effect cap removal, by a quarter-turn twist that produces a relatively large axial cap travel due to the provision of multiple screw thread elements thereon. The cap can be pushed straight on, acco

A childproof safety screw cap and container having yieldable cap retainer means which are overcome, to effect cap removal, by a quarter-turn twist that produces a relatively large axial cap travel due to the provision of multiple screw thread elements thereon. The cap can be pushed straight on, accompanied by bypassing of the threads. The retainer means and the threads increase their interlock action if the cap is squeezed laterally, as by the act of a child applying its teeth to the cap. A shielding flange on the container defeats efforts to bite the cap under its bottom rim, and a bevelled top peripheral portion of the cap defeats its being gripped at the top, by the teeth.

대표청구항 ▼

A childproof, push-on, quarter-turn, twist-off cap construction in a dispensing container, comprising in combination: (a) a container neck having exterior screw thread means and having a conical camming surface, (b) a resilient screw cap having internal screw threads means cooperable with the screw

A childproof, push-on, quarter-turn, twist-off cap construction in a dispensing container, comprising in combination: (a) a container neck having exterior screw thread means and having a conical camming surface, (b) a resilient screw cap having internal screw threads means cooperable with the screw thread means of the container neck, all of said screw thread means being adapted to enable the cap to be forced onto the neck under straight axial pressure which forces the screw thread means to bypass each other, (c) yieldable detent means on the screw cap, engageable and cooperable with the camming surface of the container neck, said detent means normally tending to either complete the applying movement of the screw cap or else the removing movement of the same, and (d) cooperable sealing surfaces on said container neck and screw cap, (e) the number and pitch of said screw thread means enabling them, from any given rotative position of the screw cap with respect to the container neck, to shift said screw cap off of said neck in response to substantially a quarter turn in the unscrewing direction while the cap is being deformed by opposing, radially-inward pressures thereon which are sufficient to maintain its screw thread means in a deep driving position with respect to the screw thread means of the container neck, said cap normally maintaining its screw thread means out of said deep driving position.