Article feeding apparatus with electro-rheological fluid-type da

Details Article feeding apparatus with electro-rheological fluid-type da Article feeding apparatus with electro-rheological fluid-type da

1990-12-12

1992-06-30

Burr, Edgar S.

Printing

Rolling contact machines

Rotary

101 91, 101 53, 192 215, 2671401E, B41F 1324

Patent

active

051253380

ABSTRACT:
An article feeding apparatus comprising a driven roller and a pressure roller resiliently urged toward the driven roller. Movement of the pressure roller toward the driven roller is controlled by means of a damper containing material having electro-rheological properties. An electric potential of controlled magnitude is applied selectively to the material to control movement of the pressure roller. The apparatus is described in relation to a print drum and impression roller of a franking machine.

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patent: 4893800 (1990-01-01), Tabata
patent: 4981286 (1991-01-01), Kato
patent: 5000299 (1991-03-01), Goto
patent: 5007513 (1991-04-01), Carlson
patent: 5009402 (1991-04-01), Sato

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