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US 5,503,662 AGranted
Canister with porous plastic ends
AssigneeMultiform Desiccants, Inc.
InventorLora L. Berger
Life of this patent
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AssigneeMultiform Desiccants, Inc.
InventorLora L. Berger
Estimating the term…
A canister including an elongated hollow plastic body having a wall with inner and outer surfaces, an edge portion on the wall defining an open end, an end on the edge portion extending transversely to the inner and outer surfaces, a porous plastic member having an outer edge portion extending across the open end and fused to the end, an inner portion on the porous plastic member located radially inwardly of the outer edge portion and extending into the body and fused to the inner surface of the wall adjacent the end thereof, and a gas-treating material in the body. A method of fabricating the above canister including the steps of applying pressure and vibratory welding energy to the porous member to thereby cause the member which was originally planar in shape to have its outer edge compressed against the end of the body and fused thereto and the central portion inwardly of the outer edge forced into the body and its outer edge fused to the inner surface of the body adjacent the end.
A canister comprising an elongated hollow plastic canister body having a wall, inner and outer surfaces on said wall, an edge portion on said wall defining an open end, an extreme outer end on said edge portion extending transversely to said inner and outer surfaces, a gas-treating material in said canister body, and a plastic closure extending across said open end, said plastic closure having an outer edge portion fused to said extreme outer end of said edge portion of said wall for securing said plastic closure to said wall, said plastic closure also having an inner central porous portion located radially inwardly of said outer edge portion of said plastic closure, said central porous portion extending into said canister body and having an outer surface fused to said inner surface of said wall adjacent said extreme outer end for additionally securing said plastic closure to said wall.
A canister comprising an elongated hollow canister body having a wall, an edge portion on said wall defining an open end, an internal surface on said wall proximate said open end an extreme end portion on said wall, gas-treating material in said canister, and porous plastic closure means fused to said extreme end portion and said internal surface for confining said material in said canister while permitting communication between said material and gases outside of said canister.
A canister comprising a plastic canister body having a wall, inner and outer surfaces on said wall, gas-treating material in said canister body, an edge portion on said wall defining an open end, an extreme outer end on said edge portion, and a porous plastic closure having an outer edge portion fused to said extreme outer end and having a central porous portion extending into said canister body and fused to said inner surface of said wall at said edge portion, said porous plastic closure being sufficiently stiff to withstand vibratory welding forces having a pressure component transverse to said extreme outer end and a vibration component transverse to said pressure component which are utilized to fuse said porous plastic closure means to said canister body.
Dependencies are inferred from the claim text.