Take-up roll mandrel slip clutch tensioning device
AssigneeE. I. Du Pont de Nemours and Company
InventorsMatthew A. Del Bianco, Henry J. Tancredi
Life of this patent
Estimating the term…
Abstract
A tensioning device for the take-up roll in an automatic laminating apparatus is characterized by a clutch member attached to the roll, the clutch member having a clutch material thereon biased into an abutting interface with respect to a drive member. The drive member is rotated at a first predetermined angular velocity. The clutch material continuously slips along the interface with the drive member to impart a second, lesser, angular velocity.
Claims1
A tensioning device for a roll adapted to wrap a web thereupon, the tension imparted to the web being functionally related to the velocity of the roll, the device comprising:
- a drive member able to be driven at a first predetermined angular velocity;
- a clutch member connectable to a first end of the roll, the clutch member having a clutch material thereon;
- means for imposing a predetermined bias force for biasing the clutch member and the drive member into abutting contact along a friction interface between the clutch material and the drive member,
- the clutch member continuously slipping along the interface with respect to the drive member as the drive member is driven at the first angular velocity to impart a second lesser, angular velocity to the roll,
- a socket movable with respect to the second end of the roll from a first, engaged, position to a second, released, position with respect to the roll;
- and
- means for biasing the socket to the first, engaged, position.
Dependencies are inferred from the claim text.