Roll or roller – Roll cover – per se
Reexamination Certificate
2001-12-19
2009-12-08
Omgba, Essama (Department: 3726)
Roll or roller
Roll cover, per se
C492S057000, C492S060000, C101S375000
Reexamination Certificate
active
07628745
ABSTRACT:
An impression cylinder in the form of a hollow cylinder made of metal, e.g., aluminum, for printing machines, having an essentially constant wall thickness over its length. The cylinder may have a predetermined inner diameter and may have various different outer diameters. The hollow cylinder includes a cylinder jacket. The cylinder jacket is provided with longitudinal openings, such as longitudinal bores. The employment of these longitudinal openings, e.g., bores, in various different numbers, sizes and shapes, enables impression cylinders having different external diameters and equal internal diameters to have substantially similar weights or mass per unit length.
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Gallus Ferd. Ruesch AG
Greenberg Laurence A.
Locher Ralph E.
Omgba Essama
Stemer Werner H.
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