Patents Examined by Skaggs, H. Grant
  • Patent number: 5318287
    Abstract: A bypass sheet feeding device including a sheet separation device composed of a semicircular sheet drive roller and a multi-feed prevention roller which is coupled to a torque limiter, is provided on a sheet bypass feeding unit. When an uppermost sheet of sheets stacked on a bypass sheet feed tray is fed by a feed roller, the circumferential surface of the drive roller comes into press contact with the multi-feed prevention roller, thereby the uppermost sheet only is separated and conveyed and at least a sheet below the uppermost sheet is prevented from being fed. After separation and conveyance of the uppermost sheet is completed, the drive roller is stopped at a position where the circumferential surface is located upward, which results in releasing press contact with the multi-feed prevention roller.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: June 7, 1994
    Assignee: Konica Corporation
    Inventor: Kenichi Okayama
  • Patent number: 4930762
    Abstract: A portable envelope feeder that is not dedicated to a specific offset printer but can be used with multiple offset printers is described. The portable feeding apparatus is clamped to the feed elevator in order to supply an envelope stack to the offset printer. The envelope feeder has the capability of tilting back to facilitate loading of the envelope stack. A sliding weight in one of the vertical members holds the envelopes in place and also counters the moment created when the sucker foot on the printing press grips the individual envelope and pulls the envelope into the offset press. A height control bar insures that the envelope stack is always at the correct position for the sucker foot to grip and envelope. By utilizing a different size plate where the envelope stack rests and making a slight adjustment on the base plate, the present invention can feed a plurality of envelope sizes.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: June 5, 1990
    Inventor: Wesley P. Kitchens