초록 ▼

A closure-container package is illustrated in which the closure is pressed-on to the container neck and threaded off the container neck. Either the container neck or the closure has a helical thread which engages axially extending ribs on the other of the container neck or closure to form indentatio

A closure-container package is illustrated in which the closure is pressed-on to the container neck and threaded off the container neck. Either the container neck or the closure has a helical thread which engages axially extending ribs on the other of the container neck or closure to form indentations in the ribs which act as threads, teeth or a track for unthreading. A continuous or rotary seal is used between the container neck and the closure which does not require a sealing force from the threaded connection.

대표청구항 ▼

A plastic closure-container package comprising, in combination: a molded plastic container having a cylindrical neck; a molded plastic closure having a top, an outer annular skirt depending from the periphery of said top and an inner annular skirt concentric with and spaced radially inwardly from sa

A plastic closure-container package comprising, in combination: a molded plastic container having a cylindrical neck; a molded plastic closure having a top, an outer annular skirt depending from the periphery of said top and an inner annular skirt concentric with and spaced radially inwardly from said outer annular skirt; a plurality of radially projecting, axially extending and circumferentially spaced ribs on one of an external surface of said cylindrical container neck and an internal surface of said outer annular closure skin, and a helical thread on the other of said external surface of the cylindrical container neck and said internal surface of the outer annular closure skin; said ribs and thread engaging each other when said closure is moved axially over said container neck for closing said container, engagement of said thread with said ribs forming indentations in said ribs creating a track for unthreading said closure for removal of said closure from said container neck; and a continuous seal between said closure and container neck not requiring axial force created by said thread and rib engagement, said seal spaced apart from a lip of said cylindrical container neck, said seal including: a cylindrical portion on one of the inner annular skirt of said closure and an inner surface of said cylindrical container neck; a continuous radial projection on the other of the inner annular skirt of said closure and said inner surface of said cylindrical container neck extending toward and contacting said cylindrical portion to form said continuous seal.