Patent ID: 6120016
Filing Date: 2000-09-19
Classification: B65H

Abstract:
A suction device for use in the feeding of sheets of material, comprising a housing connectable to a vacuum device and having a flat surface provided with apertures through which a suction effect can be created to attract a sheet towards said surface and having a sheet discharge edge, an endless perforated belt on which the sheet is held encompassing the housing and arranged for intermittent advancing movement, and means prominent from said surface to impart distortion to an attracted sheet at a zone spaced from the sheet discharge edge of the housing, wherein the apertures in said surface are are of chevron shape overall such that they permit, by their surface area, the suction exerted on the attracted sheet to be greater in the direction towards the said sheet discharge edge, and to attract the sheet most strongly across its width at the zone where it is distorted.