A child-resistant closure
AssigneeObrist Closures Switzerland GmbH
InventorStephen FARAGHER
Life of this patent
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AssigneeObrist Closures Switzerland GmbH
InventorStephen FARAGHER
Estimating the term…
A child-resistant closure (10) for a container is provided and comprises outer and inner nested caps. The outer cap (15) loosely encompasses said inner cap (20) to allow relative rotary and axial movement therebetween. The outer and inner caps have corresponding drive formations (19, 34) which can be brought into driving engagement when the caps are moved axially towards one another. The outer cap comprises a plurality of spring fingers (18) for urging the inner and outer caps axially away from each other. The inner cap has a plurality of ramps (30). The spring fingers provide a biasing force to bias the outer and inner caps away from each other. The spring fingers are capable of drivingly engaging the ramps to drive the outer and inner caps together in a screwing-on direction, but slip over the ramps freely in an unscrewing direction. Downward pressure on the outer cap overcomes the spring finger bias to move the caps to allow unscrewing of the closure using the inner and outer cap drive formations. The inner cap is provided with capture features (33) for ensuring contact between the spring fingers and the ramps during driving engagement of spring members with ramps in the screwing-on direction.
A child-resistant closure for a container, the closure comprising outer and inner nested caps each having a top panel and a side skirt depending generally peripherally therefrom, said outer cap loosely generally encompassing said inner cap to allow relative rotary and axial movement therebetween, the outer and inner caps having corresponding drive formations which can be brought into driving engagement when the caps are moved axially towards one another to a first axial position, the outer cap comprising a plurality of spring members for urging the inner and outer caps axially away from each other to a second axial position, the inner cap top panel being provided with a plurality of ramps, the spring members providing a biasing force to maintain said outer and inner caps in the second axial position and capable of drivingly engaging the ramps in the second axial position so as to drive the outer and inner caps together in a screwing-on direction, but slipping over the ramps freely in an unscrewing direction, downward pressure on the outer cap overcoming the spring member bias to move the caps to the first axial position to allow unscrewing of the closure using the inner and outer cap drive formations, in which the inner cap top panel is provided with capture features for ensuring contact between the spring members and the ramps during driving engagement of spring members with ramps in the screwing-on direction.
Dependencies are inferred from the claim text.