Abstract: A roll-up door for a truck or the like is provided with a sealing member in order to seal the lower edge of a door against a lower sill when the door is in the closed position. The sealing member comprises three sealing strips consisting of two end strips made of a rigid rubber material and a center strip having a hollow cavity to provide pliancy thereto. The three sealing strips lay adjacent and abut one another along the lowermost portion of the door to provide a seal. The inner surfaces of each end strip that abut the center strip have exposed pins that are received in the hollow cavity of the center strip.

Abstract: To ensure retentioin of the blade tongue 16 of a prop-fan blade 10 within a receiving slot 24 in the disc arm 20 of the fan hub 4 even under the high centrifugal forces exerted on the blade 10 while rotating at high rpm, at least one pair of retaining pins 30 and 40 are provided. First seating grooves 32 and 42, respectively, are provided on opposite faces 15 and 17 of the blade tongue 16 and holes 34 and 44 are drilled transversely through the disc arm 20 so as to form corresponding second seating grooves 36 and 46, respectively, on opposite side walls 26 and 28 of the slot 24. The first and second seating grooves are arranged opposite of and parallel to each other such that each pair of grooves 32 and 36 form a retention channel between the first face 15 of the tongue 16 and the opposed side wall 26 of the slot 24 and aligned with the holes 34 and 44 for receiving the retaining pins 30 and 40 thereby locking the blade tongue within the slot 24.