Method of opening a double screw cap system for sterile medical

Details Method of opening a double screw cap system for sterile medical Method of opening a double screw cap system for sterile medical

1975-09-15

1976-04-20

McGehee, Travis S.

Package making

Interrelated or safety controls

53 14, 53381A, B65B 4300

Patent

active

039509176

ABSTRACT:
A sterile medical liquid container system that includes an inner cap and an outer cap nested together and having interconnecting splines. The inner cap has internal right-handed threads and is screwed onto a threaded bottle neck to hermetically seal this neck. The outer cap has external left-handed threads and is fused at a frangible joint to the thermoplastic bottle. A jacking ring with internal left-handed threads screws onto the outer cap and a continuous clockwise motion of the jacking ring acts to (1) fracture the outer cap, and (2) unscrew the combined intersplined inner and outer caps from the container neck.

REFERENCES:
patent: 2940229 (1960-06-01), Baker
patent: 3419172 (1968-12-01), Lee
patent: 3664536 (1972-05-01), Emery
patent: 3795337 (1974-03-01), Nozawa et al.

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