초록 ▼

A dual-compartment container for use with two substances which must be separated prior to use and which may be combined by the single step of removing the cap from the container. A top container containing one substance is sealed along its bottom end by a membrane and is rotatably seated within a bo

A dual-compartment container for use with two substances which must be separated prior to use and which may be combined by the single step of removing the cap from the container. A top container containing one substance is sealed along its bottom end by a membrane and is rotatably seated within a bottom container containing another substance. A container cap seals the top container prior to use and is threaded onto the bottom container. The cap is provided with a ratchet means which causes common rotation of the cap and the top container while the cap is being unthreaded from the bottom container. An annular knife member is interposed between the two containers and keyed to the top container for common rotation therewith as the cap is removed. Cam means are provided to translate rotary motion of the knife member relative to the bottom container into longitudinal motion of the knife member relative to the top container in order to pierce the sealing membrane.

대표청구항 ▼

A dual-compartment container for containing a different substance in each compartment, and for isolating said substances until the container is ready for use, comprising: a first container having a cylindrical, threaded neck portion; a second container rotatably and sealingly secured within said nec

A dual-compartment container for containing a different substance in each compartment, and for isolating said substances until the container is ready for use, comprising: a first container having a cylindrical, threaded neck portion; a second container rotatably and sealingly secured within said neck portion, the bottom end of said second container sealed by a membrane; a cap for threadably engaging said neck portion; means interposed between said cap and said second container for enabling common rotation in a predetermined direction; a substantially annular knife member interposed between said first and second containers for piercing said membrane upon rotation of said cap in said predetermined direction and consequent rotation of said second container relative to said first container; means for translating rotary motion of said cap to longitudinal motion of said knife member relative to said second container.