초록 ▼

A method of controlling a dispenser duct door, including positioning an upper side of the door, in a closed position, in a door-opening direction, and rotating a bottom end of the door to a partially open position vertically under the upper side of the door in response to an opening signal. The bott

A method of controlling a dispenser duct door, including positioning an upper side of the door, in a closed position, in a door-opening direction, and rotating a bottom end of the door to a partially open position vertically under the upper side of the door in response to an opening signal. The bottom end of the door is rotated further in the door-opening direction in response to ice hitting a rear of the door and is returned to the partially open position. After a predetermined delay, the bottom end of the door is returned to the closed position.

대표청구항 ▼

A method of controlling a dispenser duct door, including positioning an upper side of the door, in a closed position, in a door-opening direction, and rotating a bottom end of the door to a partially open position vertically under the upper side of the door in response to an opening signal. The bott

A method of controlling a dispenser duct door, including positioning an upper side of the door, in a closed position, in a door-opening direction, and rotating a bottom end of the door to a partially open position vertically under the upper side of the door in response to an opening signal. The bottom end of the door is rotated further in the door-opening direction in response to ice hitting a rear of the door and is returned to the partially open position. After a predetermined delay, the bottom end of the door is returned to the closed position. ng method defined in claim 1 wherein the beams form a pair of horizontally spaced weld seams in the foils, the method further comprising the step after step c) of e) cutting the foils between the seams to free the package and form a new curtain extending crosswise across the path. 4. A method of wrapping a package with foil using an apparatus having: a portal frame at a wrapping station; a pair of foil supplies on the frame; and a pair of double-weld beams at the station movable transversely of a forward transport direction toward and away from each other, the method comprising the steps of: pulling foils from the respective supplies and forming a curtain of the two foils pulled from the supplies with the curtain extending transversely of the direction across the portal frame at the wrapping station; displacing a package to be wrapped in the forward transport direction along a path extending through the portal frame into engagement with the curtain and through the station so that the foils extend downstream past the package; and simultaneously moving together the beams on opposite sides of the foils downstream of the station to press and weld the foils together downstream of the package while displacing the package in a reverse direction opposite to the forward direction toward the beams to reduce tension in the foils created by inward movement of the beams. 5. The method defined in claim 4 wherein the path is horizontal. 6. The method defined in claim 4, further comprising the step of determining the position of the package relative to the frame. 7. The method defined in claim 4 wherein the supplies are rolls having center axes, the frame having a support holding the rolls with their axes horizontal, the method further comprising the step of deflecting the foils into a vertical orientation in the curtain. 8. The method defined in claim 4, further comprising the steps of looping the foils between the supplies and the curtain; and continuously pulling the foils from the respective supplies.