Overcap with two-surface cup seal

Claim 1

The combination of an aerosol container having a closure and a valve cup attached to the closure by a crimp providing an annular rib coaxially arranged with respect to the closure, and a valve in the valve cup; with an overcap for the valve and valve cup, said overcap comprising a cylindrical member having a closed end and an open end, the open end forming a rim, an inner cylindrical shell on said closed end and extending toward the open end, said inner shell having a terminal rim located part way between the open and closed ends of said overcap, said rim comprising in general an inverted V-shaped member having an outer generally straight leg member and an inner leg member, said inner leg member being inwardly inclined with respect to the outer leg member and terminating short thereof, said inner leg member being of thinner section than the outer leg member and being deformable; the outer leg member engaging the outer aspect of the annular rib on the closure and cup and the inner leg member engaging the top of said rib and being bent upwardly and inwardly thereby as the overcap is applied to the aerosol container; and means at the rim of said overcap frictionally engaging corresponding means on the aerosol container to aid in holding the overcap in position.