Automatic document feeder with mechanical clutch mechanism

Details Automatic document feeder with mechanical clutch mechanism Automatic document feeder with mechanical clutch mechanism

1992-11-17

1993-11-30

Olszewski, Robert P.

Sheet feeding or delivering

Feeding

Separator and conveyor

271116, 271270, B65H 500, B65H 306

Patent

active

052658570

ABSTRACT:
An automatic document feeder of a fax machine has a fully mechanical clutch mechanism. The clutch mechanism employs an assembly of a coil spring and a pair of pulleys respectively affixed to a feeding roller and a dividing roller of the fax machine. The coil spring expands due to a first type torsional deformation so that transmission is engaged to drive both the feeding roller and the dividing roller to feed the document into the fax machine one sheet at a time; and as the coil spring is constricted due to a second type torsional deformation caused at the time when one printed sheet is under scanning for fax transmission, transmission is disengaged to stop the feeding roller.

REFERENCES:
patent: 2762623 (1956-09-01), Uthenwoldt et al.
patent: 3961786 (1976-06-01), Yanker
patent: 4032135 (1977-06-01), Ruenzi
patent: 4529187 (1985-07-01), Einem et al.
patent: 4927130 (1990-05-01), Tanaka et al.
patent: 5141217 (1992-08-01), Lim et al.

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