Drive system for an oscillating pregripper of a sheet-fed printi

Details Drive system for an oscillating pregripper of a sheet-fed printi Drive system for an oscillating pregripper of a sheet-fed printi

1997-04-28

1999-12-14

Terrell, William E.

Sheet feeding or delivering

Feeding

By means to convey sheet

271270, 271277, 101410, 101409, B65H 512, B65H 534, B65H 502, B41F 130

Patent

active

060006943

ABSTRACT:
A drive system for an oscillating gripper of a sheet-fed printing machine has a main drive train and a controlled drive. The pregripper is mechanically coupled to the main drive train. The controlled drive supplies energy required to drive the pregripper in accordance with a position of the pregripper. The controlled drive at least approximately meets the discontinuous energy requirement of the pregripper.

REFERENCES:
patent: 4458893 (1984-07-01), Ruh
patent: 5024432 (1991-06-01), Thunker et al.
patent: 5176079 (1993-01-01), Pollich
patent: 5343806 (1994-09-01), Fricke et al.
patent: 5390601 (1995-02-01), Fricke et al.
patent: 5456128 (1995-10-01), Thunker
patent: 5596929 (1997-01-01), Fricke et al.
patent: 5651544 (1997-07-01), Stadler

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