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US 5,797,531 AGranted
Differential-pressure turner bar configuration
AssigneesHeidelberger Druckmaschinen AG, Heidelberg Harris, Inc.
InventorJean-Claude Marmin
Life of this patent
Estimating the term…
Abstract
A turner bar has a hollow space that can be connected to a compressed air source, for deflecting a printed web of material. Closable and openable air outlet openings are disposed on a turner bar jacket. When a web is present above the air outlet openings of the turner bar, a counterpressure that builds up below the web effects a displacement of a movable opening and closing element, in such a way that an air supply is released.
Claims10
A turner bar, comprising:
- a turner bar body;
- a turner bar jacket enclosing said turner bar body, said turner bar jacket having closable and openable air outlet openings formed therein;
- a hollow space formed within said turner bar jacket to be connected to a compressed air source for conveying compressed air for deflecting a printed web of material;
- a movable opening and closing element disposed in said turner bar body for selectively opening and closing said air outlet openings from within the interior therein, said opening and closing element having a conduit formed therein and being moved to an open position by a pressure gradient caused by a presence of a web of material above said air outlet openings.
1 more element
A turner bar, comprising:
- a turner bar body having a hollow chamber formed therein to be connected to a compressed air source;
- a turner bar jacket enclosing said turner bar body, said turner bar jacket having air outlet openings formed therein;
- an opening and closing element disposed in said turner bar body for opening and closing said air outlet openings from within the interior therein, said opening and closing element having a conduit and being moved within said turner bar body by a pressure gradient caused by a web of material above said air outlet openings to an opened position;
- and
- a bypass system formed in said turner bar body;
- said hollow chamber providing compressed air to said bypass system and said opening and closing element such that said hollow chamber providing compressed air to said air outlet openings when said opening and closing element is in an open position.
3 more elements
Dependencies are inferred from the claim text.