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US 7,584,957 B2Granted
Device for cycling blast or suction air in a sheet processing machine
AssigneeHeidelberger Druckmaschinen AG
InventorHolger Edinger
Life of this patent
Estimating the term…
Abstract
A device for controlling blast and/or suction air in a sheet processing machine, especially a printing press, includes a rotary valve for making ready different positive and negative pressure levels during a work cycle. The rotary valve is connected as a bypass parallel to a supply line between a consumer or load and a positive and negative pressure source. The rotary valve is connected at an input side thereof with the ambient air.
Claims9
A device for controlling suction air in a sheet processing machine, the device comprising:
- a negative pressure source;
- a consumer or load;
- a supply line connected directly between said consumer or load and said negative pressure source;
- and
- a rotary valve having a rotatably disposed rotor driven in a work cycle of the sheet processing machine for making ready different negative pressure levels during the work cycle, said rotary valve being disposed in said supply line and defining a portion of said supply line, said rotary valve being connected as a bypass in parallel to said supply line, and said rotary valve having an input side in communication with ambient air.
2 more elements
Dependencies are inferred from the claim text.