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US 6,131,636 AGranted
Laminating machine
OwnerPeter J. Anderson, Willis A. Murphyinventors
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OwnerPeter J. Anderson, Willis A. Murphyinventors
Estimating the term…
A laminating machine of the type which laminates documents between sheets of plastic or on a substrate comprising a housing, first and second sets of upper and lower rolls within said housing having end shafts, one of the sets of rolls arranged to receive material to be laminated and move the material to the other of the sets of rolls, spaced apart end supports are in housing rotatably supporting the end shafts, drive means are connected to the lower rolls of each pair, to drive the lower rolls, the upper rolls of each pair are mounted in the end supports to move upwardly to accommodate material of variable thickness, resilient power transmission means are connected between the upper rolls and the lower rolls and driven from the lower rolls to maintain synchronization of rotation of the upper rolls with the lower rolls and to bias the upper rolls downwardly while permitting the upper rolls to move upwardly to an extent dependent on the thickness of material passing between the pairs of rolls.
A laminating machine of the type which laminates documents between sheets of plastic or on a substrate comprising a housing, first and second sets of upper and lower rolls within said housing having end shafts, one of said sets of rolls arranged to receive material to be laminated and move said material to the other of said sets of rolls, spaced apart end supports in said housing rotatably supporting said end shafts, drive means connected to the lower rolls of each pair to drive said lower rolls, said upper rolls of each pair mounted in said end supports to move upwardly to accommodate material of variable thickness, resilient power transmission means connected between said upper rolls and said lower rolls and driven from said lower rolls to maintain synchronization of rotation of said upper rolls with said lower rolls and to bias said upper rolls downwardly while permitting said upper rolls to move upwardly to an extent dependent on the thickness of material passing between said pairs of rolls.
A laminating machine which comprises upper and lower heating platens defining a passage therethrough for material to be laminated, upper and lower rolls for accepting material passed between said platens, end support members for said rolls, drive means connected to the lower of said rolls at one end thereof, normally meshing gears on said rolls at the ends opposite said drive means whereby said lower roll may drive said upper roll, bearing arms pivotally mounting said upper roll to said end support members whereby said upper roll may pivot upwardly, and biasing means acting on said bearing arms to maintain said upper rolls in contact with material to be laminated when said bearing arms pivot upward to an extent where said gears are out of mesh.
A laminating machine of the type which laminates documents between sheets of plastic or on a substrate comprising a housing, a first set of upper and lower rolls having end shafts within said housing adapted to receive material to be laminated and move said material between upper and lower heating platens within said housing, a second set of upper and lower rolls having end shafts within said housing arranged to receive the material from said platens and discharge the material from the machine, and supports in said housing for said rolls, said roll shafts adapted to be rotatably supported between said end supports, drive means connected to one of said rolls of said one of said sets at one of said end supports and gearing means on said rolls at the other of said end supports for transmitting rotation of said one of said rolls to the others of said rolls, bearing arms pivotally mounted to said end supports and rotatably supporting the upper rolls of each pair of rolls whereby said upper rolls of each pair may pivot upwardly to accommodate material of various thickness, and biasing means in said housing acting on said bearing arms to maintain said upper rolls in contact with material to be laminated when said bearing arms pivot upwardly to an extent where the gears on said upper rolls move out of mesh with the gears on said lower rolls.
Dependencies are inferred from the claim text.