초록 ▼

A child-resistant closure includes a plastic inner shell having a base wall with a peripheral skirt, at least one internal thread segment on the peripheral skirt and a plurality of internal lugs on the base wall adjacent to the skirt. A plastic outer shell has a base wall with a peripheral skirt and

A child-resistant closure includes a plastic inner shell having a base wall with a peripheral skirt, at least one internal thread segment on the peripheral skirt and a plurality of internal lugs on the base wall adjacent to the skirt. A plastic outer shell has a base wall with a peripheral skirt and a plurality of internal L-shaped lugs at a juncture of the base wall and the peripheral skirt. Each of the L-shaped lugs includes a first portion extending radially inwardly along an undersurface of the base wall of the outer shell for engaging the external lugs on the inner shell, and a second portion extending axially along an inner surface of the peripheral skirt of the outer shell for slidably engaging the inner shell and aligning the inner shell within the outer shell. The second portions of the L-shaped lugs preferably have rounded radially inwardly facing surfaces for reduced sliding friction with the skirt of the inner shell.

대표청구항 ▼

The invention claimed is: 1. A child-resistant closure that includes:a plastic inner shell having a base wall with a peripheral skirt, at least one internal thread segment on said peripheral skirt and a plurality of external lugs on said base wall adjacent to said skirt, anda plastic outer shell hav

The invention claimed is: 1. A child-resistant closure that includes:a plastic inner shell having a base wall with a peripheral skirt, at least one internal thread segment on said peripheral skirt and a plurality of external lugs on said base wall adjacent to said skirt, anda plastic outer shell having a base wall with a peripheral skirt and a plurality of internal L-shaped lugs at a juncture of said base wall and said peripheral skirt, each of said L-shaped lugs including a first portion extending radially inwardly along an undersurface of said base wall of said outer shell for engaging said external lugs on said inner shell, and a second portion extending axially along an inner surface of said peripheral skirt of said outer shell for slidably engaging said inner shell and aligning said inner shell within said outer shell,wherein said base wall of said outer shell has a peripheral portion of a first thickness on which said first portions of said internal lugs are disposed and an imperforate central portion of a second thickness less than said first thickness, andwherein said base wall of said inner shell has a peripheral portion of a third thickness on which said external lugs are disposed and an imperforate central portion of a fourth thickness less than said third thickness.