Receptacles – Closures – Closure penetrated through intersecting slits
Reexamination Certificate
2006-03-14
2006-03-14
Hylton, Robin A. (Department: 3727)
Receptacles
Closures
Closure penetrated through intersecting slits
C220SDIG019, C220S255100, C220S254100, C215S253000
Reexamination Certificate
active
07011226
ABSTRACT:
In each of radial grooves52which are formed on a sealing disc portion34of a packing10, low strength portions64are formed within a predetermined range from the center of the sealing disc portion34by decreasing the thickness of each of thin portions62by deeply cutting each of the radial grooves52. When the center of the sealing disc portion34is pressed by the pressing means, splits are formed at the low strength portions64, and extend to curved grooves54and circumferential grooves56. As a result, it is possible to obtain a plugging member in which a draining port can be opened wide with a small amount of pressing force.
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