| 摘要 |
A closure to fit cans to reseal same when the contents have been partially removed. Top and bottom radially stretchable diaphragms enclose top and bottom flexible disks. Top flexible conical member is depressed by a handle and has means cooperating with means on the bottom flexible conical member to first radially expand the latter and then to lock the same in expanded condition so as to force the edges of the diaphragms into sealing engagement with the can wall. Pulling the handle upward disengages the flexible members from each other and permits the parts to assume collapsed condition out of sealing contact with the can wall.
|
