Blend drop conveyor for depositing granules onto an asphalt-coated sheet
AssigneeOwens Corning Fiberglas Technology, Inc.
InventorDavid P. Aschenbeck
Life of this patent
Estimating the term…
Abstract
A method of applying blend drop granules to an asphalt coated sheet includes moving an asphalt coated sheet in a machine direction, depositing a blend drop of granules on a blend drop conveyor that is moving at a first speed, changing the speed of the blend drop conveyor to a second speed that is closer to the speed of the moving asphalt coated sheet than is the first speed, and releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet.
Claims35
A method of applying blend drop granules to an asphalt coated sheet comprising:
- moving an asphalt coated sheet in a machine direction;
- depositing a blend drop of granules on a blend drop conveyor that is moving at a first speed;
- changing the speed of the blend drop conveyor to a second speed that is closer to the speed of the moving asphalt coated sheet than is the first speed;
- and
- releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet.
A method of applying blend drop granules to an asphalt coated sheet comprising:
- moving an asphalt coated sheet in a machine direction;
- depositing a blend drop of granules on a blend drop conveyor that is stationary;
- accelerating the blend drop conveyor to a speed that approximates the speed of the moving asphalt coated sheet;
- and
- releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet.
A method of applying blend drop granules to an asphalt coated sheet comprising:
- moving an asphalt coated sheet in a machine direction;
- providing a blend drop conveyor that has a surface having a plurality of cells for containing the blend drop granules;
- depositing a blend drop of granules on the blend drop conveyor;
- and
- releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet.
Apparatus for applying blend drop granules to an asphalt coated sheet, the apparatus comprising:
- a blend drop conveyor for receiving blend drop granules and releasing the blend drop granules for contact with the asphalt coated sheet, the blend drop conveyor being positioned above the asphalt coated sheet, and the blend drop conveyor having a driving means for driving the conveyor;
- a blend drop applicator positioned above the blend drop conveyor for feeding blend drop granules to the blend drop conveyor;
- a controller adapted to send a signal to the driving means to drive the blend drop conveyor at a first speed when the blend drop applicator is feeding blend drop granules to the blend drop conveyor, and adapted to send a different signal to the driving means to drive the blend drop conveyor at a second speed after the blend drop granules are positioned on the blend drop conveyor.
Apparatus for applying blend drop granules to an asphalt coated sheet, the apparatus comprising:
- a blend drop conveyor for receiving blend drop granules and releasing the blend drop granules for contact with the asphalt coated sheet, the blend drop conveyor being positioned above the asphalt coated sheet, and the blend drop conveyor having a plurality of cells for containing the blend drop granules.
Dependencies are inferred from the claim text.