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US 6,381,888 B1Granted
Device for changing elongated objects
AssigneeIwarson & Kotton Exposense AB
InventorPeter J. T. Törnqvist
Life of this patent
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AssigneeIwarson & Kotton Exposense AB
InventorPeter J. T. Törnqvist
Estimating the term…
A device for successively changing elongated flexible sheets or similar flexible objects from an active position to non-active positions includes a drum, relative to which the sheets or similar flexible objects are fixed. The drum is rotatable in two opposing rotational directions. The rotational directions of the drum are controlled by a timing device in relation to the rotational speed of the motor so that rotation takes place in a first direction for such a time that the sheet located in the active position becomes wound up onto the drum and that a second sheet, located in the first rotational direction after the first sheet, is carried to a position from which the second sheet is unwound from the drum to the active position, upon rotation of the drum in the other rotational direction. Thereafter the drum is rotated in the other rotational direction for such a time that the second sheet becomes unwound from the drum. The rotation of the drum is subsequently stopped by the suitable timing device during such a time as is wanted in the active position for the second sheet. The timing procedure is repeated after the wanted time in the active position.
A device for successively changing sheets (1-4) from an active position to non-active positions comprising a plurality of elongated flexible sheets and a drum (5) operatively coupled to a motor and being rotatable by means of said motor (6), wherein said drum (5) is rotatable in two opposing rotational directions, the rotational direction of said drum (5) being controlled by a timing device having a timing procedure in relation to a rotational speed of the motor (6) so that rotation takes place in a first direction for such a time that one of said sheets (1) located in the active position becomes wound up onto the drum and such that a second of said sheets (4) is carried to a position from which said second sheet (4) is unwound from the drum (5) to the active position, upon rotation of said drum (5) in the other rotational direction, and in that said drum (5) thereafter is rotated in the other rotational direction for such a time that the second sheet (4) becomes unwound from the drum (5), and such that the rotation of the drum (5) is subsequently stopped by the timing procedure during such a time as is wanted in the active position for the second sheet (4), and in that the timing procedure is repeated after the wanted time in the active position.
A device for successively changing sheets (1-4) from one active position to non-active positions comprising a drum (5) operatively coupled to a motor and being rotatable by means of said motor (6), wherein said drum (5) is rotatable in two opposing rotational directions, the rotational direction of said drum (5) being controlled by a timing procedure in relation to a rotational speed of the motor (6) so that rotation takes place in a first direction for such a time that one of a plurality of elongated flexible sheets (1) located in the active position becomes wound up onto the drum and such that a second of said plurality of elongated flexible sheets (4) is carried to a position from which said second sheet (4) is unwound from the drum (5) to the active position, upon rotation of said drum (5) in the other rotational direction, and in that said drum (5) thereafter is rotated in the other rotational direction for such a time that the second sheet (4) becomes unwound from the drum (5), and such that the rotation of the drum (5) is subsequently stopped by the timing procedure during such a time as is wanted in the active position for the second sheet (4), and in that the timing procedure is repeated after the wanted time in the active position.
Dependencies are inferred from the claim text.