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US 4,537,318 AGranted
Dispensing closure lock and seal
AssigneeSunbeam Plastics Corporation
InventorGary V. Montgomery
Life of this patent
Estimating the term…
Abstract
A lock and seal member for a dispensing package including a container and a dispensing type closure is disposed in a manner to fuse the closure and container permanently together. Removal of the contents of the container requires dispensing through a dispensing passage in the closure while the seal remains in position to lock the closure in permanent position relative to the container and also to form a seal preventing the leakage of materials.
Claims10
A dispensing package comprising:
- a container having a neck portion forming an opening with a lip around the edge of said opening and means for attaching a closure thereto, a closure for covering said opening having complementary means for attachment to said container, a metallic seal member disposed between said closure and said lip portion and having an annular portion engaged with said lip and with said closure when said closure has been initially applied to said container by engagement of said attachment means, said annular portion of said seal member having a coating on one side surface of a material fusible with said container and a coating on the other side surface of said seal member fusible with the material of said closure when said seal member is subjected to heat, said seal member being fused to said closure and said container to form a permanent connection therebetween.
A dispensing package comprising:
- a container having an externally threaded neck portion forming an opening with a lip around the edge of said opening, an internally threaded closure for covering said opening by engagement of said container and closure threads, a metallic seal member disposed between said closure and said lip portion and having an annular portion engaged with said lip and with said closure when said closure has been initially applied to said container by threading engagement, said annular portion of said seal member having a coating on one side surface of a material fusible with said container and a coating on the other side surface of said seal member of a material fusible with said closure when said seal member is subjected to heat, said seal member being fused to said closure and said container to form a permanent connection therebetween.
Dependencies are inferred from the claim text.