초록 ▼

A safety closure and container package including an internally threaded closure cap and a container having a threaded neck. A retention flange is located on the container neck below the threads, having a gradually sloping upper surface and an abrupt, inwardly directed lower surface extending downwar

A safety closure and container package including an internally threaded closure cap and a container having a threaded neck. A retention flange is located on the container neck below the threads, having a gradually sloping upper surface and an abrupt, inwardly directed lower surface extending downwardly toward the neck at 45°-90°. A coacting inwardly projecting retention bead on the cap completes this child-resistant feature requiring considerably more force for removal of the closure than application. The safety package can also include a second container flange and cap bead located between the retention flange and bead and the threads to provide a non-backoff feature. The non-backoff flange has a gradually sloping upper surface and a gradually sloping inwardly directed surface extending downwardly toward the container neck at 15°-25°. The coacting inwardly projecting non-backoff bead on the cap will retain the cap in sealing contact with the container neck even during initial unthreading to provide a second safety feature. These safety features can be applied to a standard threaded package or to a dispensing package in which the closure includes a threaded cap having a dispensing orifice in its top and a lid hinged to the cap for closing of the orifice.

대표청구항 ▼

A child resistant threaded package comprising, in combination: a container having a threaded neck and an outwardly extending retention flange on said neck below said threads, said flange having an upwardly and inwardly directed surface extending from an apex into said neck and an abrupt inwardly dir

A child resistant threaded package comprising, in combination: a container having a threaded neck and an outwardly extending retention flange on said neck below said threads, said flange having an upwardly and inwardly directed surface extending from an apex into said neck and an abrupt inwardly directed lower surface, extending downwardly from said apex at an angle of 45°to 90°towards said neck; and a closure cap with an annular skirt having complementary threads for engaging said container threads and an inwardly projecting retention bead below said threads having a minimum diameter less than said container flange apex, said flange and bead being so spaced from said threads that as said cap is threaded onto said container neck, said cap retention bead is gradually expanded as it moves axially along said upper flange surface so that the smaller diameter bead snaps over the larger diameter flange apex and upon retrograde rotation of said cap in a opening direction, said bead will coact with said lower flange surface to resist removal, providing a child resistant feature requiring more force for removal than application.