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US 6,786,150 B2Granted
Printing press roll having auxiliary rotation capability
AssigneeHeidelberger Druckmaschinen AG
InventorsGerald Joseph Drew, David Elliott Whitten, Mark Anthony Wingate
Life of this patent
Estimating the term…
Abstract
A roll for a web printing press includes a cylindrical member configured for supporting a web, the cylindrical member being rotatable about an axis of rotation. A motor device is disposed at the axis of rotation for rotating the cylindrical member so as to advance the web over the cylindrical member during a webbing-up operation.
Claims14
A roll for a web printing press, comprising:
- a cylindrical member configured for supporting a web, the cylindrical member being rotatable about an axis of rotation;
- a fluid motor device disposed at the axis of rotation and configured for rotating the cylindrical member so as to advance the web over the cylindrical member during a webbing-up operation, the motor device configured to permit the cylindrical member to rotate freely during a printing operation of the printing press;
- the fluid motor being an air motor including a plurality of vanes attached to the cylindrical member and an air source configured for blowing air against the vanes so as to cause the cylindrical member to rotate;
- and
- a control device for controlling a flow of air to the air motor, the control device being configured for stopping the flow of air to the air motor a predetermined time after actuation of an operator air flow activation device.
2 more elements
A web printing press comprising:
- a cylindrical member configured for supporting a web, the cylindrical member being rotatable about an axis of rotation;
- and
- a fluid motor device disposed at the axis of rotation and configured for rotating the cylindrical member so as to advance the web over the cylindrical member during a webbing-up operation, the motor device configured to permit the cylindrical member to rotate freely during a printing operation of the printing press;
- and
- a control device for controlling a flow of fluid to the motor, the control device being configured for stopping the flow of electricity or fluid to the motor a predetermined time after actuation of an operator activation device.
2 more elements
A method for rotating a roll in a web printing press, the method comprising:
- providing a motor device disposed at an axis of rotation of the roll and configured for rotating the roll so as to advance the web over the roll;
- operating the motor device so as to rotate the roll during a webbing-up operation;
- disengaging the motor device so as to permit the roll to rotate freely during a printing operation of the printing press;
- the motor device being an electric motor or a fluid motor;
- and
- stopping the flow of fluid to the fluid motor a predetermined time after actuation of an operator activation device.
3 more elements
Dependencies are inferred from the claim text.