Pneumatic brake

Details Pneumatic brake Pneumatic brake

1977-11-16

1979-11-06

Schacher, Richard A.

Advancing material of indeterminate length

Combined

226195, B65H 2308

Patent

active

041733010

ABSTRACT:
A pneumatic brake device for use in electrostatic copier devices to impart a drag to paper moving through the device. The brake device includes a housing having a perforated suction surface functioning as a brake surface. In order to reduce suction loss when only a portion of the brake surface is covered by the paper sheet, various means are disclosed for limiting or preventing airflow through portions of the brake surface not covered by the paper.

REFERENCES:
patent: 2753181 (1956-07-01), Anander
patent: 3259288 (1966-07-01), Wassermann
patent: 3321121 (1967-05-01), Nyberg

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