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A closure device, which may serve as a bottle closure or as a sink plug, or may constitute a container such as for an air-freshener material, comprises a base and a lid, formed by a resiliently deformable disc, centrally resiliently mounted on a bridge spanning the base and capable of flexing revers

A closure device, which may serve as a bottle closure or as a sink plug, or may constitute a container such as for an air-freshener material, comprises a base and a lid, formed by a resiliently deformable disc, centrally resiliently mounted on a bridge spanning the base and capable of flexing reversibly between two stable dished conditions, respectively an externally convex closed form and an externally concave open form.

대표청구항 ▼

A closure device comprising a base and a lid, the lid being a resiliently deformable disc generally centrally resiliently mounted on the base and capable of flexing reversibly between and maintaining two stable dished conditions, respectively an externally convex closed form, in which the rim area o

A closure device comprising a base and a lid, the lid being a resiliently deformable disc generally centrally resiliently mounted on the base and capable of flexing reversibly between and maintaining two stable dished conditions, respectively an externally convex closed form, in which the rim area of the disc bears on a member selected from the group consisting of said base or a member about said base, and an externally concave open form, in which the rim of the disc is spaced away from the base, said resilient mounting of the lid being by resilient bridge means spanning at least part of said base.