Offset printing press unit with removable cylinders

Details Offset printing press unit with removable cylinders Offset printing press unit with removable cylinders

2006-03-14

2006-03-14

Evanisko, Leslie J. (Department: 2854)

Printing

Rolling contact machines

Rotary

C101S479000, C101S247000

Reexamination Certificate

active

07011022

ABSTRACT:
An offset printing press having plate and blanket cylinder retention mechanisms, each retention mechanism having at least one trunnion axially displaceable between an operative position and a disengaged position. Said trunnion is freely disconnected from an associated cylinder end in the disengaged position such that the plate cylinder and the blanket cylinder are removable from the printing press from between the frame structure. One of the cylinder retention mechanisms is selectively displaceable relative to the frame structure such that a distance between the cylinder axes of rotation is variable. The plate and blanket cylinders are thus removable from the printing press and substitutable with replacement cylinders having a different outer circumference. The press comprises a gear drive system which remains in gear meshed engagement with both the plate cylinder and the blanket cylinder regardless of the variable relative positions thereof.

REFERENCES:
patent: 1934776 (1933-11-01), Stoessel
patent: 3108536 (1963-10-01), Harrison
patent: 3147702 (1964-09-01), Mrtin
patent: 3616751 (1971-11-01), Mowry
patent: 5787808 (1998-08-01), Stram et al.
patent: 6520083 (2003-02-01), Petersen et al.
patent: 6655279 (2003-12-01), Tsukamoto
patent: 2005/0188866 (2005-09-01), Ruoff et al.
patent: 296 01 151 (1996-04-01), None
patent: 199 55 084 (2001-05-01), None

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