Retractable-ramp accumulator and method

Details Retractable-ramp accumulator and method Retractable-ramp accumulator and method

1992-08-18

1993-09-14

Olszewski, Robert P.

Sheet feeding or delivering

Delivering

By endless conveyor

271212, 271213, 271220, B65H 4304, B65H 3108

Patent

active

052442004

ABSTRACT:
A retractable-ramp accumulator comprises driven endless elastic belts to feed sheets therebetween along a sheet-feeding path, a sheet stacker having a stacking location and including a selectively releasable stop gate, and at least one selectively retractable ramp for selectively deflecting sheets out of the sheet feeding path for selectively feeding under or over previous sheets that are stopped in the stacking location by the stop gate. In one embodiment, an upper and a lower set of ramps are arranged such that while one set of ramps is retracted, the other set of ramps is interposed in the sheet feeding path, so that sheets can be selectively "over" or "under" accumulated.

REFERENCES:
patent: 4640506 (1987-02-01), Luperti et al.
patent: 4799663 (1989-01-01), Golicz
patent: 4805891 (1989-02-01), Luperti et al.
patent: 4808054 (1989-02-01), Cuzin
patent: 4925180 (1990-05-01), Golicz
patent: 4925362 (1990-05-01), Golicz
patent: 5094443 (1992-03-01), Young, Jr.
patent: 5123639 (1992-06-01), Edwards
patent: 5147092 (1992-09-01), Driscoll et al.

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