Pressure cylinder in the form of a hollow cylinder made of metal
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United States of America Patent
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Dec 8, 2009
Grant Date -
Aug 4, 2005
app pub date -
Dec 19, 2001
filing date -
Dec 19, 2001
priority date (Note) -
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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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