Apparatus for depositing granules onto an asphalt coated sheet
AssigneeOwens Corning Fiberglas Technology, Inc.
InventorDavid P. Aschenbeck
Life of this patent
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Abstract
A method of applying blend drop granules to an asphalt coated sheet includes moving an asphalt coated sheet in a machine direction, generating vertically moving blend drops of granules and directing the vertically moving blend drops of granules into contact with a curved conveyor. The blend drops are moved along the curved conveyor to change the direction of the blend drops of granules to a generally horizontal orientation in the machine direction. The blend drops are released from the curved conveyor for contact with the asphalt coated sheet.
Claims22
Apparatus for applying blend drop granules to an asphalt coated sheet comprising:
- a blend drop conveyor for receiving blend drop granules, the blend drop conveyor being positioned above an asphalt coated sheet traveling in a machine direction, the blend drop conveyor having an upper flight moving in a direction opposite the machine direction and a lower flight moving in the machine direction;
- an alignment preserving mechanism for moving the blend drops from the upper flight to the lower flight of the blend drop conveyor while retaining the blend drops in contact with the blend drop conveyor;
- and
- a conveyor having a generally horizontal leg for conveying the blend drops in the machine direction while maintaining the blend drops in contact with the blend drop conveyor, and for releasing the blend drops onto the asphalt coated sheet, the blend drop conveyor being adapted to release the blend drops in the machine direction.
Apparatus for applying blend drop granules to an asphalt coated sheet comprising:
- a blend drop applicator for generating vertically moving blend drops of granules;
- and
- a curved conveyor positioned to intercept the vertically moving blend drops of granules and change the direction of the blend drops to a generally horizontal orientation as the blend drops move along the curved conveyor, the curved conveyor being adapted to release the blend drops in a substantially horizontal orientation onto the asphalt coated sheet.
Apparatus for applying blend drop granules to an asphalt coated sheet comprising:
- a blend drop conveyor for receiving blend drop granules, the blend drop conveyor being positioned above an asphalt coated sheet traveling in a machine direction, the blend drop conveyor having an upper flight moving in a direction opposite the machine direction and a lower flight moving in the machine direction;
- an alignment preserving mechanism for moving the blend drops from the upper flight to the lower flight of the blend drop conveyor while retaining the blend drops in contact with the blend drop conveyor;
- and
- a conveyor for conveying the blend drops in the machine direction and in a plane substantially parallel to the asphalt coated sheet while maintaining the blend drops in contact with the blend drop conveyor, and for releasing the blend drops onto the asphalt coated sheet, the blend drop conveyor being adapted to release the blend drops in the machine direction.
Dependencies are inferred from the claim text.