Dispensing – Drip – leakage or waste catching or disposal – Return to main supply
Patent
1998-05-21
2000-03-07
Bomberg, Kenneth
Dispensing
Drip, leakage or waste catching or disposal
Return to main supply
222552, 215209, B67D 116
Patent
active
060328290
ABSTRACT:
A container-and-closure sealing system embodied in a container and closure package, and method of making the same. The container has an open mouth surrounded by a cylindrical neck wall having internal threads and an open upper edge. The closure is a cap/dispensing cup type and has a skirt with external threads for threaded receipt within the container neck wall. A circumferentially continuous flange projects outwardly from the skirt and has a conical portion for cam engaging, trapping and sealing with the open upper edge of the neck wall as the closure is threaded into this wall. The closure skirt also has a circumferentially continuous plug-type sealing surface that extends radially outwardly from the skirt between the trapping flange and closure external threads for interference sealing engagement with the neck wall, as the closure is threaded thereinto. The materials of the closure and container may differ in hardness relative to another so that either the plug seal rib of the juxtaposed neck wall surface deforms under closure/container engaging forces to thereby enhance the sealing capability and life. The flange has a conical skirt wall portion integrally dependent from a flange radial wall portion that sealing cam wedge embraces the neck open upper edge and creates increasing squeeze force as the closure is threaded into the neck wall. A concentrically intermediate annular seal is also provided in the form of V-rib or liner material interposed in assembly between the container upper edge and the flange radial wall portion. The container neck wall may have a circumferentially continuous internal groove disposed between the neck internal threads and open upper edge for receiving the closure plug seal rub by interference snap fit when said closure is threaded into the wall and reaches closed position thereon to thereby enhance removal torque capability.
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Geisinger Gregory A.
Haffner Eugene F.
Kidd Mark R.
Trepina George R.
Bomberg Kenneth
Bui Thach
Owens-Illinois Closure Inc.
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