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AssigneeIllinois Tool Works Inc.
InventorsMichael J. McMahon, Lawrence Share, Michael A. Pollack, Donald L. Crevier, Nigel D. Knight, Stanley Piotrowski
Estimating the term…
An ultrasonic welding assembly comprising a horn, an anvil and an anvil cover. The horn comprises a generally T-shaped flattening surface and a rail projecting forward of the flattening surface. The rail is shaped to serve as a dam for flowing thermoplastic zipper material during stomping of slider end stops. The horn further comprises a plurality of vertical energy directors designed to direct ultrasonic energy into the mass of zipper material and deflect flowing zipper material toward the dam. The horn further comprises first and second recesses located on opposite sides of a stem of the T-shaped flattening surface. The anvil cover overlies opposing portions of the anvil and comprises a T-shaped cutout. The T-shaped flattening surface of the horn fits in the T-shaped cutout of the anvil cover. The resulting zipper has slider end stops located at opposing ends. Each end stop comprises flattened zipper material having a plurality of spaced indentations, the indentations being formed by the energy directors during stomping. The zipper can be pre-heated prior to ultrasonic stomping. A flange of the zipper can be cooled by fluid during ultrasonic stomping of the zipper parts.
An ultrasonic welding assembly comprising a horn and an anvil, wherein said horn comprises a generally T-shaped flattening surface and a rail projecting forward of said flattening surface, said rail being shaped to serve as a dam for flowing thermoplastic material.
An ultrasonic welding assembly comprising a horn and an anvil, wherein said horn comprises a generally T-shaped flattening surface and a plurality of projections projecting out of said flattening surface, each of said plurality of projections comprising first and second surfaces that are neither parallel nor perpendicular to said flattening surface, said first and second surfaces being inclined at different angles.
An ultrasonic welding assembly comprising a horn and an anvil, wherein said horn comprises a generally T-shaped flattening surface, first and second recesses located on opposite sides of a stem of said T-shaped flattening surface, and first and second bevels, said first bevel being located between said first recess and a first arm of said T-shaped flattening surface and said second bevel being located between said second recess and a second arm of said T-shaped flattening surface.
An ultrasonic welding assembly comprising a horn and an anvil, said horn comprising a generally T-shaped flattening surface, and further comprising an anvil cover overlying opposing portions of said anvil and comprising a T-shaped cutout, wherein said T-shaped flattening surface of said horn fits in said T-shaped cutout of said anvil cover.
An ultrasonic welding assembly comprising a horn and an anvil, wherein said horn comprises a flattening surface and a first plurality of projections projecting out of said flattening surface, each of said first plurality of projections comprising first and second surfaces that are neither parallel nor perpendicular to said flattening surface, said first and second surfaces being inclined at different angles.
An ultrasonic welding assembly comprising a horn having a flattening surface of predetermined shape, an anvil and an anvil cover overlying opposing portions of said anvil, wherein said anvil cover comprises a cutout and said flattening surface of said horn fits in said cutout.
Dependencies are inferred from the claim text.