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 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 there between, 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, one of the inner and outer caps comprising one or more spring members for urging the inner and outer caps axially away from each other to a second axial position, the other of the inner and outer caps comprising one or more ramps.
The closure as claimed in claim 16, in which the external surface of the inner cap side skirt includes one or more axial ribs for allowing venting when the outer and inner caps are initially assembled together.
The child-resistant closure as claimed in claim 16, in which for the or each ramp a respective detent projection is provided which projects above the plane of the top panel and lies in the path of travel of the spring member, the projection supports the spring member when in driving engagement with the ramp to resist deformation of the spring member as it transmits force to the ramp face, the profile of the projection matches the profile of the region of the spring member in contact therewith.
(canceled)
9-10. (canceled)
The closure as claimed in any preceding claim 16 in combination with a container.
12-15. (canceled)
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 there between, 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, one of the inner and outer caps comprising one or more spring members for urging the inner and outer caps axially away from each other to a second axial position, the other of the inner and outer caps comprising one or more ramps, the spring member/s providing a biasing force to maintain said outer and inner caps in the second axial position and drivingly engaging the ramps in the second axial position so as to drive the outer and inner caps together in an screwing direction, but slipping over the ramp/s freely in an unscrewing direction, downward pressure on the outer cap overcoming the spring finger 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 ramp is profiled to support the spring member substantially continuously as the member passes over it in the unscrewing direction.
Dependencies are inferred from the claim text.