Closure device for membrane-sealed container
OwnerTheodore P. Junkoinventor
Life of this patent
Estimating the term…
Abstract
A closure device for a container having an opening sealed with a membrane comprises: a cap adapted to engage the opening of the container for closing same and comprising a first cylindrical wall connected to one side of a circular base; and a membrane-penetrating element comprising a second cylindrical wall connected to the reverse side of the circular base and, within the second cylindrical wall, means for penetrating a membrane when the element is pressed into contact with the opening of a container sealed with the membrane, the means comprising a plurality of arciform cutters that are connected to the base and are coaxial with and in close proximity to the inner surface of the second cylindrical wall, the plurality of arciform cutters together comprising a total of at least 300 degrees.
Claims17
A closure device for a container having an opening sealed with a membrane that comprises:
- a cap comprising a first cylindrical wall connected to one side of a circular base;
- and
- a membrane-penetrating element comprising a second cylindrical wall connected to the reverse side of said circular base and, within said second cylindrical wall, means for penetrating a membrane when said element is pressed into contact with the opening of a container sealed with said membrane, said means comprising a plurality of arciform cutters that are connected to said base and are coaxial with and in close proximity to the inner surface of said second cylindrical wall, said arciform cutters each having an apex and a thickness dimension that is less at said apex than at said base, said plurality of arciform cutters together comprising a total of at least 300 degrees.
A closure device for a container having an opening sealed with a membrane that comprises:
- a cap comprising a first cylindrical wall connected to one side of a circular base;
- and
- a membrane-penetrating element comprising a second cylindrical wall connected to the reverse side of said circular base and, within said second cylindrical wall, means for penetrating a membrane when said element is pressed into contact with the opening of a container sealed with said membrane, said means comprising four arciform cutters that are connected to said base and are coaxial with and in close proximity to the inner surface of said second cylindrical wall, said arciform cutters each having an apex and substantially the same length, height, and thickness dimensions, said thickness dimension being less at said apex than at said base, and said arciform cutters together comprising a total of at least 300 degrees.
A closure device for a container having an opening sealed with a membrane that comprises:
- a cap comprising a cylindrical wall connected to one side of a circular base;
- and
- a membrane-penetrating element comprising means for penetrating a membrane when said element is pressed into contact with the opening of a container sealed with said membrane, said means comprising a plurality of arciform cutters that are coaxial with and connected to said base on the reverse side of said base, said arciform cutters each having an apex and a thickness dimension that is less at said apex than at said base, said plurality of arciform cutters together comprising a total of at least 300 degrees.
A closure device for a container having an opening sealed with a membrane that comprises:
- a cap comprising a first continuous wall connected to one side of a base along the perimeter of said base;
- and
- a membrane-penetrating element comprising a second continuous wall connected to the reverse side of said base along the perimeter of said base and, within said second continuous wall, means for penetrating a membrane when said element is pressed into contact with the opening of a container sealed with said membrane, said means comprising a plurality of elongate cutters that are connected to said base and are each situated in close proximity to the inner surface of said second continuous wall and in a parallel relationship to that portion of said inner surface closest to each said cutter, said cutters each having an apex and a thickness dimension that is less at said apex than at said base,
- whereby said membrane is separated completely or substantially completely from said opening when said element is pressed into contact with said opening.
Dependencies are inferred from the claim text.