초록 ▼

A drum closure system is provided for protecting the integrity of the threads of a drum neck and for providing the safe and easy installation of a replaceable closure neck. The drum closure system primarily comprises a drum with a drum neck integrally formed in the drum top, a closure plug, a replac

A drum closure system is provided for protecting the integrity of the threads of a drum neck and for providing the safe and easy installation of a replaceable closure neck. The drum closure system primarily comprises a drum with a drum neck integrally formed in the drum top, a closure plug, a replaceable closure neck which is interposed threadably between the drum neck and the closure plug, and a specialized tool for installing and removing the replaceable closure neck. The use of the tool, which is designed to enable exertion of very high levels of torque on the replaceable neck, eliminates the need for a locking mechanism between the replaceable neck and drum neck because insertion of the replaceable neck at a high torque measurement virtually eliminates the possibility of relative rotation of the replaceable neck without the specialized tool. Installation of the closure plug makes the removal of the replaceable neck virtually impossible.

대표청구항 ▼

A closure system for a container comprising (a) a container having an integral cylindrical neck with internal threads for threadably receiving a closure member with external threads; (b) a closure plug having external threads; (c) a replaceable closure member having an upper cylindrical skirt with e

A closure system for a container comprising (a) a container having an integral cylindrical neck with internal threads for threadably receiving a closure member with external threads; (b) a closure plug having external threads; (c) a replaceable closure member having an upper cylindrical skirt with external and internal threads and a lower unthreaded cylindrical skirt, said internal threads for threadably receiving said closure plug with external threads; and (d) a means for tightening the replaceable closure member to a torque measurement of greater than 65 ft lbs comprising a specialized tool; wherein said replaceable closure member comprises an annular upper flange extending radially outwardly from the top of said upper cylindrical skirt, the inner circumference of the annular flange having distributed within said inner circumference a series of evenly-spaced semicircular notches, and an annular lower flange extending radially inwardly from said upper cylindrical skirt, the inner circumference of the annular lower flange having distributed within said inner circumference a series of evenly spaced semicircular notches.