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US 5,983,770 AGranted
Reseal with a partial perforation and method and apparatus for creating a partial perforation in a reseal
AssigneeAbbott Laboratories
InventorsR. Hayes Helgren, Charles C. Valentincic
Life of this patent
Estimating the term…
Abstract
A reseal is partially perforated by stretching the reseal membrane, establishing contact between one side of the membrane and an anvil, and by effecting partial penetration of the membrane with at least one cutting edge from the other side of the membrane to a predetermined distance from the anvil. Multiple partial perforations may be made with one or more cutting edges.
Claims16
A method for creating a partially perforated elastic seal membrane in a reseal comprising the steps of:
- (A) restraining said reseal and applying radial tensile forces to said membrane with said radial tensile forces having first components acting in directions generally perpendicular to a first surface of said membrane and second components acting in at least two different directions that are generally parallel to said first surface of said membrane;
- (B) effecting partial penetration of said membrane by engagement of at least one cutting edge with a second surface of said membrane, said second surface located opposite said first surface, said partial penetration being formed through the second surface to a predetermined distance from said first surface and traversing the direction of at least one of said second components of said radial tensile forces;
- and
- (C) disengaging said cutting edge from said membrane and terminating the application of said radial tensile forces to said membrane.
1 more element
A method for creating a partially perforated elastic seal membrane in a reseal comprising the steps of:
- (A) stretching said membrane by restraining said reseal and positioning an anvil against a first surface of said membrane to apply radial tensile forces to said membrane, said radial tensile forces having first components acting in directions generally perpendicular to said first surface of said membrane and second components acting in at least two different directions that are generally parallel to said first surface of said membrane;
- and
- (B) effecting partial penetration of said membrane by engagement of at least one cutting edge with a second surface of said membrane, said second surface located opposite said first surface, said partial penetration being formed through the second surface to a predetermined distance from said first surface and traversing the direction of at least one of said second components of said radial tensile forces.
Dependencies are inferred from the claim text.