Abstract: An apparatus for bursting perforations on an article has a retractable burst member and an opposed second retractable burst member that imposes an impact force on the perforations on the perforated lid. Retractable burst members are arranged for vertical movement towards and away from one another in a common plane. The article is positioned in a plane substantially perpendicular to the movement of the burst members so that the burst members can engageably contact the article at the perforations. A separator is used to capture the perforated lid at the burst perforations and then retract for separating the perforated lid from the main portion of the article.

Abstract: An apparatus for bursting perforations on an article, such as a corrugated box, has a rotatable, retractable burst member that exerts an impact force on opposing sides of end portions of the perforated lid. Burst member is arranged for vertical movement towards an end portion of the perforated lid and then rotatable movements to opposing sides of the perforated lid. The article is positioned in a plane substantially perpendicular to the movement of the burst member so that the burst members can engageably contact end portions of the perforated lid with a predetermined impact force. A separator is used to capture the perforated lid and then retract for separating the perforated lid from the main portion of the article.

Abstract: A method and a system for seating and unseating cassette lids from cassettes include utilizing two upright guides that are spaced apart by a distance that causes each guide to project between a cassette and a flap of a cassette lid. Outwardly facing surfaces of the guides are sloped such that the guides have an increasing cross sectional area with approach toward a base of the device. In an unseating operation, downward pressure is applied to the cassette lid, causing the flaps of the cassette to follow the sloped contour of the outwardly facing guide surfaces. The configuration of the guides causes the flaps to separate from the downwardly moving cassette. When the pressure is relaxed, material memory causes the lid to return to its original shape, sliding up the guides while the cassette remains in place. For some cassettes, structure for retaining the cassette in position may be beneficial.