Closure caps and closures
AssigneeGreif International Holding BV
InventorCornelis Van De Klippe
Life of this patent
Estimating the term…
Abstract
A cap for a screw-threaded container closure or closure plug includes a cap top and an attachment ring. The attachment ring is securingly engageable with the container closure or closure plug. The attachment ring comprises a cam surface and an upwardly facing shoulder above the cam surface. The container closure or closure plug comprises a plurality of lugs engageable by a wrench or other drive tool. Each lug includes a radially inwardly facing guide surface comprising a downwardly and radially inwardly sloping portion and a downwardly facing shoulder extending radially outward below the downwardly and radially inwardly sloping portion. A secure and relatively easy engagement between the cap and container closure or closure plug is thereby obtainable.
Claims19
A cap for a container closure or closure plug, comprising a cap top and an attachment ring extending axially downward from beneath the bottom surface of the cap top under a central portion of the cap top;
- the attachment ring being securingly engageable with the container closure or closure plug;
- the attachment ring comprising:
- a] a cam surface configured to deflect the attachment ring radially inward upon engagement of the attachment ring with the container closure or closure plug, and
- b] an upwardly facing shoulder above the cam surface;
- wherein the upwardly facing shoulder comprises an inner, radially outwardly extending portion and an outer, upwardly extending lip.
A screw-threaded container closure or closure plug comprising:
- a plurality of lugs engageable by a wrench or other drive tool and each having a radially inwardly facing guide surface comprising a downwardly and radially inwardly sloping portion and a downwardly facing shoulder extending radially outward below the downwardly and radially inwardly sloping portion;
- wherein the downwardly facing shoulder comprises a radially extending, radially outer portion and a radially inner, depending lip.
In combination, a cap and a screw-threaded container closure or closure plug, the cap comprising a cap top and an attachment ring extending axially downward from beneath the bottom surface of the cap top under a central portion of the cap top;
- the attachment ring being securingly engageable with the container closure or closure plug;
- the attachment ring comprising a] a cam surface configured to deflect the attachment ring radially inward upon engagement of the attachment ring with the container closure or closure plug and b] an upwardly facing shoulder above the cam surface;
- the container closure or closure plug comprising a plurality of lugs engageable by a wrench or other drive tool and each having a radially inwardly facing guide surface comprising a downwardly and radially inwardly sloping portion and a downwardly facing shoulder extending radially outward below the downwardly and radially inwardly sloping portion;
- wherein the upwardly facing shoulder comprises an inner, radially outwardly extending portion and an outer, upwardly extending lip and the downwardly facing shoulder comprises a radially extending, radially outer portion and a radially inner, depending lip complementary to the outer, upwardly extending lip.
Dependencies are inferred from the claim text.