Plural speed belt document feeder

Details Plural speed belt document feeder Plural speed belt document feeder

1985-10-17

1987-05-19

Reger, Duane A.

Sheet feeding or delivering

Feeding

By means to convey sheet

271114, 271116, 192 4892, B65H 502

Patent

active

046661441

ABSTRACT:
In a drive system for a document feeder transport for a copier with a drive output normally driven at a high speed for document transport and driven at a lower speed for document registration at a registration position, the improvement wherein the drive system comprises a drive motor and a high speed drive normally driving the document feeder transport through a normally closed clutch in the high speed drive, and a reduction speed system also simultaneously driven by the drive motor, the reduction speed system including a normally over-driven over-running clutch connected to, but normally disengaged by, the high speed drive, and a system for automatically rapidly and smoothly switching the drive output to the lower speed, as the document approaches the registration position, by opening the normally closed clutch in response thereto, whereby the high speed drive is disengaged and shortly thereafter the reduction speed system automatically begins to drive the drive output at the lower speed by the automatic engagement of the over-running clutch upon the slowing down of the drive output to the lower speed. Preferably the normally closed clutch and the normally over-driven over-running clutch and the drive output are axially combined on a common drive shaft.

REFERENCES:
patent: 3214998 (1965-11-01), Hall
patent: 3473035 (1969-10-01), Gardner et al.
patent: 3674363 (1972-07-01), Baller et al.
patent: 3743274 (1973-07-01), Komori
patent: 3882734 (1975-05-01), Obermann et al.
patent: 4315439 (1982-02-01), Grachtrup
patent: 4450942 (1984-05-01), Takefuta et al.
patent: 4462527 (1984-07-01), Taylor et al.
patent: 4481841 (1984-11-01), Abthoff et al.

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