Beverage container with threaded plastic drinking sleeve
A molded plastic drinking sleeve for push-on assembly to a neck portion of a container according to a typical embodiment includes an annular body formed by an annular sidewall having a uniform taper from a first open end to an opposite second open end, the annular sidewall defining an open interior. The annular sidewall further includes a series of external threads and a roller abutment at the base of the threads for stopping the roller equipment used to help fabricate a metal closing cap that is designed to thread onto the plastic drinking sleeve. The cooperating metal container that receives the drinking sleeve includes a portion that is curled over the upper edge of the drinking sleeve. A free edge of the curled portion is embedded into the plastic of the drinking sleeve.
1. In combination:
a container including a neck portion which is constructed and arranged to receive a plastic drinking sleeve, said neck portion having a generally frustoconical wall section; and
a plastic drinking sleeve which is constructed and arranged to be assembled onto said neck portion with an interference fit, said plastic drinking sleeve having a sidewall with an open first end, said sidewall being formed with external threads, said external threads having a thread major diameter and a thread minor diameter, said sidewall having a generally frustoconical inner surface, wherein the relative dimensional sizing of said generally frustoconical wall section and of said generally frustoconical inner surface results in said interference fit and wherein said thread major diameter and said thread minor diameter each having a first size prior to assembly of said plastic drinking sleeve onto said neck portion and a second size following assembly of said plastic drinking sleeve onto said neck portion, wherein said second size is larger than said first size due to said interference fit which expands said plastic drinking sleeve, wherein said neck portion includes a free edge that is formed over a portion of said sidewall adjacent said open first end, a part of said free edge being embedded into said plastic drinking sleeve.
2. The combination of claim 1 wherein said second size of said thread major diameter is approximately eight percent (8%) larger than said first size of said thread major diameter and wherein said free edge, prior to being embedded into said plastic drinking sleeve, has a generally rectangular shape in cross section.
3. In combination:
an internally-threaded closing cap including a body portion and a frangible ring which is connected to said body portion by frangible elements;
a container including a neck portion which is constructed and arranged to receive a plastic drinking sleeve, said neck portion having a generally frustoconical wall section; and
a plastic drinking sleeve which is constructed and arranged to be assembled onto said neck portion with an interference fit, said plastic drinking sleeve having a sidewall with an open first end, said sidewall being formed with external threads which are constructed and arranged to threadedly receive said closing cap, said external threads having a thread major diameter and a thread minor diameter, said sidewall having a generally frustoconical inner surface, wherein the relative dimensional sizing of said generally frustoconical wall section and of said generally frustoconical inner surface results in said interference fit and wherein said thread major diameter and said thread minor diameter each having a first size prior to assembly of said plastic drinking sleeve onto said neck portion and a second size following assembly of said plastic drinking sleeve onto said neck portion, wherein said second size is larger than said first size due to said interference fit which expands said plastic drinking sleeve, wherein said neck portion includes a free edge that is formed over a portion of said sidewall adjacent said open first end, a part of said free edge being embedded into said plastic drinking sleeve, wherein said plastic drinking sleeve includes a radial lip and defines a recess adjacent said radial lip, said frangible ring being received in said recess and being constructed and arranged for abutment against said radial lip in response to unthreading of said closing cap from said plastic drinking sleeve.
4. The combination of claim 3 wherein said second size of said thread major diameter is approximately eight percent (8%) larger than said first size of said thread major diameter and wherein said free edge, prior to being embedded into said plastic drinking sleeve, has a generally rectangular shape in cross section.