Dispensing – With cutter and/or punch – To form dispensing opening in container
Patent
1980-03-26
1982-02-16
Tollberg, Stanley H.
Dispensing
With cutter and/or punch
To form dispensing opening in container
222DIG1, B67B 724
Patent
active
043155812
ABSTRACT:
A holder for electrographic developing powder comprises an oblong outlet opening for the powder and has the opening covered by a membrane and by a slide valve which is movable along channels bordering the opening and is provided near one of its ends with a cutting device that cuts the membrane as the slide valve is moved from a first position closing off the opening to a second position not covering the opening. The holder comprises a flexible end portion that can be contracted by being pinched in a direction substantially parallel to the plane of the slide valve, and from which projections extend laterally for engagement with notches in guides that support the holder over a powder reservoir. The cutting device is moved toward the flexible end portion as the slide valve is moved from the first to the second position. The slide valve has a greater cross dimension near its end carrying the cutting device than near its other end, whereby the flexible end portion of the holder cannot be contracted by being pinched when the slide valve does not cover the opening.
REFERENCES:
patent: 3539077 (1970-11-01), Drexler
patent: 3651838 (1972-03-01), Albert
patent: 3898956 (1975-08-01), Andrako
patent: 4062385 (1977-12-01), Katusha et al.
patent: 4237943 (1980-12-01), Ermel
Mennen Peter M. W.
Van Soest Hendrikus J. J.
Johnston Albert C.
Oce'-Nederland, B.V.
Tollberg Stanley H.
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