Anti-missiling bottle closure
AssigneeZapata Industries, Inc.
InventorRocco David Walker
Life of this patent
Estimating the term…
Abstract
Pressure relief openings are provided in roll-on (twist-off) closures for beverage bottles to release gas pressure within the closure promptly as the closure is turned to remove it and before missiling of the closure can occur.
Claims29
An improved closure of the type having a shell with integral top and side walls, a knurl region adjacent to the top wall, and with rolled-on threads provided on the side wall for engagement with the threaded neck of a bottle to contain pressurized fluids, the threads being limited to about 11/4 turns, the improvement comprising means including venting openings in said side wall contiguous to the knurl region for releasing the pressure within said closure sufficiently to prevent missiling of the closure when the closure is initially turned to unthread it from the bottle.
An improved closure in accordance with claim 13, wherein each bridge is at least about 0.040 inch long.
An improved pressurized-bottle closure cup of the type having a top wall and an integral malleable side wall adapted to receive rolled-on threads limited to about 11/4 turns, said cup having a knurl region adjacent to said top wall and having means including venting openings contiguous to said knurl region for releasing pressure from within the closure sufficiently to prevent closure-missiling when the closure is initially turned to unthread it from the threaded neck of a bottle containing pressurized fluid.
In combination with a pressurized-fluid bottle of the type having an externally threaded neck, a cap having a top wall adapted to provide a seal upon the mouth of said bottle, a knurl region adjacent to the top wall, and having an integral side wall with threads for engaging said threaded neck, the threads being limited to about 11/4 turns, and venting means in said side wall contiguous to the knurl region for releasing pressure from within said cap sufficiently to prevent missiling of said cap when said cap is turned initially to unthread it from said bottle.
Dependencies are inferred from the claim text.