Aerosol safety can

Claim 2

A safety vent for pressurized containers such as aerosol containers and the like comprising a pressure relief area provided in at least one wall of said container, a first set of weakened line portions formed in said wall and separated from each other by spaced unweakened wall portions, said first set of weakened line portions being in spaced opposed relationship to each other, said pressure relief area defined by said first set of weakening lines and said spaced unweakened wall portions, a second weakened line portion, said second weakened line portion disposed within said pressure relief area and generally normally disposed between and terminating short of opposed weakened line portions of said first set.

Claim 3

The structure of claim 1 wherein said first set of weakened line portions are weakened to a greater extent than in said second weakened line portion.

Claim 4

The structure of claim 2 wherein said second weakened line portion comprises an odd numbered plurality of weakened lines each parallel to each other.

Claim 5

The structure of claim 3 wherein outwardly disposed lines of said second weakened line portion terminate short of the more centrally located said lines.

Claim 6

The structure of claim 2 wherein at least one end of said second weakened line portion terminates in connection with the one of said first weakened lines adjacent thereto.

Claim 7

A container for pressurized material having safety vent means for the prevention of explosions due to increased pressure within said container, said container of generally cylindrical construction and having a base, sidewalls connected thereto and upwardly extending therefrom and a closure member connected to saId sidewalls at the opposite end thereof, said end closure provided with means for dispensing said material, said vent means formed in said base and generally centrally thereof and comprising a first set of weakened lines formed in said base in spaced opposed relationship to each other and partially defining a pressure relief area therebetween, said pressure relief area having unweakened base portions separating said first set of weakened lines and further defining said pressure relief area and a second set of weakened lines, said second set of weakened lines disposed entirely within said pressure relief area, said second set of weakened lines positioned generally normal to said first set of weakened lines and terminating in spaced relation thereto at opposite ends thereof.

Claim 8

A container for pressurized material having safety vent means for the prevention of explosions due to increased pressure within said container, said container of generally cylindrical construction and having a base, sidewalls connected thereto and upwardly extending therefrom and a closure member connected to saId sidewalls at the opposite end thereof, said end closure provided with means for dispensing said material, said vent means formed in said base and generally centrally thereof and comprising a first set of weakened lines formed in said base in spaced opposed relationship to each other and partially defining a pressure relief area therebetween, said pressure relief area having unweakened base portions separating said first set of weakened lines and further defining said pressure relief area and a second set of weakened lines, said second set of weakened lines disposed entirely within said pressure relief area, said second set of weakened lines positioned generally normal to said first set of weakened lines and terminating in spaced relation thereto at opposite ends thereof.

Claim 9

The container of claim 6 wherein there is less residual strength in said first set of weakened lines than in said second set of weakened lines to permit initial tearing in said first set of weakened lines and initial bending in said second set of weakened lines.

Claim 10

The container of claim 7 wherein a least one end of said second set of weakened lines terminates in connection with one of said first weakened lines.