Abstract: An exemplary shingle includes at least one coated shingle sheet defining a headlap portion and a tab portion each having opposed upper and lower surfaces. A first line of adhesive is adhered to one of the upper surface of the headlap portion and the lower surface of the tab portion, and includes a first thermally activated adhesive material. A second line of adhesive is adhered to one of the upper surface of the headlap portion and the lower surface of the tab portion, and includes a second thermally activated adhesive material having a minimum activation temperature less than a minimum activation temperature of the first thermally activated adhesive material.

Abstract: A pallet puller for effecting engagement with a cargo pallet for sliding the same over a vehicle bed or like surface. In one form there are two pivotally mounted arms having cross pieces on their inner end. The cross pieces have lateral protrusions that fit beneath the stringer in the pallet so as to retain the pallet puller in place under virtually all conditions. There is mechanism for controllably pivoting the two arms between an open position and a closed position. In another form there is a single elongate arm with a cross piece on the end. The cross piece has lateral protrusions that fit beneath the pallet stringer to retain the pallet puller in place.