Air carrier spacer sleeve for a printing cylinder
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United States of America Patent
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Oct 13, 1998
Issued Date -
N/A
app pub date -
Sep 29, 1997
filing date -
Mar 11, 1996
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A cylindrical spacer sleeve is interposed between a printing sleeve, which carries printing matrices, and a printing cylinder. The spacer sleeve has an innermost core member that is expandable by interposition of air pressure between the inner surface of the core member and the outer surface of the printing cylinder. In an alternative embodiment, the core member is not expandable. The outer surface of the spacer sleeve torsionally rigidly supports by an interference fit, the printing sleeve. A rigid bridge layer is disposed between the outer surface and the core member. The spacer sleeve has a plurality of air channels through which pressurized air is supplied from within the bridge layer to the outer surface. In one embodiment, the bridge layer includes a pair of axially spaced apart spacer rings. Pressurized air flowing through the channels assists in expanding the diameter of the innermost surface of the printing sleeve for alternatively mounting the printing sleeve onto the spacer sleeve and dismounting the printing sleeve from the spacer sleeve.
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