Fluidic driven self-oscillating printer roller and method
AssigneeRockwell International Corporation
InventorStanley Momot
Life of this patent
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Abstract
A self-oscillating roller assembly (11, 13) and method of oscillating a roller in an offset printing press having an oscillating drive assembly (11) for oscillating a rotationally mounted roller (10, 12) with a source of pneumatic pressure (62) by alternatively applying pressure to pressure chambers (42A, 42B) on opposite sides of the roller (10, 12) to impart a longitudinal force on the oscillating roller (10, 12) from the source of pressure (62) in two opposite directions and a controller (47) for controlling the application of pressure (58, 62) to alternately move the rotationally mounted roller in two opposite directions.
Claims8
In an oscillating roller assembly having an elongate roller mounted for both rotational movement and oscillating movement along its length and a source of fluidic pressure for forcing said oscillating movement, the improvement being an oscillating drive mechanism, comprising:
- means for imparting a longitudinal force on the elongate roller from the source of fluidic pressure in at least one of two opposite direction including
- a fixedly mounted, T-shaped annular collar with an elongate stem portion and a cross bar part, and
- another annular collar carried by the elongate roller and aligned to slideably receive the cross bar part therewithin to form an annular pressure chamber;
- and
- means connected with the source of pressure for selectively controlling the application of pressure to the pressure chamber to alternatively move the elongate roller in two opposite longitudinal directions.
Dependencies are inferred from the claim text.