Lined child-resistant closure for widemouth liquid containers

Details Lined child-resistant closure for widemouth liquid containers Lined child-resistant closure for widemouth liquid containers

B - Operations, Transporting

65

D

206/26

B65D 55/02 (2006.01) B65D 50/04 (2006.01)

Patent

CA 1262537

ABSTRACT OF THE DISCLOSURE A liquid-tight child-resistant package that includes a glass or plastic container of the wide mouth type (i. e., with a container finish "T" dimension of at least 33 millimeters) and a complementary molded ther- moplastic closure that utilizes a separate disk-type liner. The closure which, with the exception of the separate liner" is molded in one piece, has a multiple helical thread start, and each closure thread has a vertically extending shoulder on its upper side. Each complementary container finish thread has a vertically extending shoulder that engages the corresponding shoulder on the closure, after the partial unscrewing of the closure, to prevent further unscrewing of the closure until the closure is vertically drepressed on the container finish, against the spring action of the closure liner, to separate the shoulder on the closure thread from the shoulder on the container thread and to thereby permit continuation of the unscrewing of the closure until it can be removed from the container. The container also has a series of threadlike projections below the container threads and the closure thread is received in helical slots between the container threads and the threadlike projections. The threadlike projections help to positively lift the closure off the container finish during the opening of the container.

510150

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