REINFORCED AEROSOL CONTAINER
First Claim
1. In an aerosol container for use with a dip tube extending down into the container and having a valve on its upper end for Discharging the fluid contents of the container as an aerosol, said container comprising a molded plastic, hollow container body with a circumferentially continuous outer wall, and laterally extending ribs joined to said outer wall at the inside and reinforcing the outer wall against internal pressure in the container, said ribs being spaced apart circumferentially and dividing the space in the container inside of said outer wall into successive compartments circumferentially, the improvement wherein said ribs at one end of the container body present bottom edges that extend toward the opposite end of the container body in a direction laterally inward from said outer wall to provide openings affording free fluid communication throughout the interior of the container body at said one end thereof.
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Accused Products
Abstract
An aerosol container having a plastic container body with an annular outer wall reinforced by radial ribs which divide the interior circumferentially into compartments that are open to each other. Preferably, these ribs tie the outer wall to a cylindrical inner wall that is spaced inside the outer wall.
22 Citations
13 Claims
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1. In an aerosol container for use with a dip tube extending down into the container and having a valve on its upper end for Discharging the fluid contents of the container as an aerosol, said container comprising a molded plastic, hollow container body with a circumferentially continuous outer wall, and laterally extending ribs joined to said outer wall at the inside and reinforcing the outer wall against internal pressure in the container, said ribs being spaced apart circumferentially and dividing the space in the container inside of said outer wall into successive compartments circumferentially, the improvement wherein said ribs at one end of the container body present bottom edges that extend toward the opposite end of the container body in a direction laterally inward from said outer wall to provide openings affording free fluid communication throughout the interior of the container body at said one end thereof.
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2. An aerosol container according to claim 1, wherein said one end of the container is the bottom end.
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3. An aerosol container according to claim 2, wherein said ribs extend continuously along said outer wall for most of its length.
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4. In an aerosol container for use with a dip tube extending down into the container and having a manually operated valve on its upper end for discharging the fluid contents of the container as an aerosol, said container comprising a molded plastic, hollow container body with a circumferentially continuous annular outer wall, a circumferentially continuous annular inner wall spaced inside said outer wall and providing a central chamber for receiving the dip tube, and radially extending ribs rigidly tying said outer wall to said inner wall and dividing the annular space between them circumferentially into neighboring compartments, the improvement wherein said ribs at one end of the container body taper inward from said outer wall in a direction toward the opposite end of the container body to provide large openings between said neighboring compartments and said central chamber for free fluid communication between them at said one end of the container body.
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5. An aerosol container according to claim 4, wherein said one end of the container is the bottom end.
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6. An aerosol container according to claim 5, wherein said ribs extend continuously along said outer wall for most of its length.
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7. An aerosol container according to claim 6, and further comprising a container bottom extending across said outer wall at the bottom and dished downwardly toward the middle to be spaced closely below the lower end of the dip tube when the latter is inserted.
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8. An aerosol container according to claim 5, wherein said ribs extend continuously along said inner wall for substantially its entire length.
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9. An aerosol container according to claim 5, wherein said inner wall has vent openings therein between the ribs near its upper end.
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10. An aerosol container according to claim 5, wherein said outer wall tapers inwardly toward its upper end and is joined directly thereat to the upper end of said inner wall, and further comprising a circumferentially continuous second inner wall having its lower end spaced inside the upper end of said first-mentioned inner wall and having its upper end joined directly to the upper end of said outer wall, and laterally extending ribs extending from said second inner wall laterally outward to said first-mentioned inner wall and to said outer wall above the upper end of said first-mentioned inner wall.
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11. An aerosol container according to claim 10, wherein said second inner wall has vent openings therein near its upper end between said last-mentioned ribs.
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12. An aerosol container according to claim 11, wherein said first-mentioned inner wall has vent openings therein between the ribs near its upper end.
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13. An aerosol container according to claim 12, wherein said first-mentioned ribs extend continuously along said outer wall for most of its length and along said first-mentioned inner wall for substantially its entire length.
Specification