Sheet feeding or delivering – Feeding – Separators
Patent
1994-05-10
1996-08-06
Terrell, William E.
Sheet feeding or delivering
Feeding
Separators
271276, B65H 308
Patent
active
055426590
ABSTRACT:
Multi-way slide-type shutoff valve for suction air of suction-type grippers on a sheet-transfer drum, including a plurality of closing parts, linearly slidable in a housing for optionally closing air-inlet openings connected to intake ducts of the suction-type grippers, and for closing air-outlet openings connected to a suction-air source through the intermediary of a rotary valve, the closing parts having a cylindrical shape, at least some thereof being arranged adjacent one another and in coaxial alignment, and an operating device for displacing the closing parts, is provided with springs having spring constants coordinated with one another and being disposed at least between the adjacent coaxial closing parts, at least an outer one of the closing parts being connected to the operating device.
REFERENCES:
patent: 4024814 (1977-05-01), Becker
patent: 4121819 (1978-10-01), DiFrancesco et al.
Greenberg Laurence A.
Heidelberger Druckmaschinen AG
Kelly Tamara
Lerner Herbert L.
Terrell William E.
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