Abstract: The cargo carrier is a monocoque hollow shell enclosure designed to carry cargo without substantially adding aerodynamic drag to an automobile. The carrier is installed on top of an appropriate motor vehicle and has a smooth outer surface and is in the shape of an airfoil, preferably a symmetrical airfoil, which minimizes aerodynamic drag. The top of the cargo carrier includes an access door attached by a hinge to the cargo carrier. The cargo carrier has two mounting members on either side, which sit in a support frame attached to factory installed roof rack rails, thus supporting the cargo carrier above the vehicle.

Abstract: A horizontal door assembly is provided using a gas spring as a lifting mechanism for the door leaf. A special bracket having a number of pivot pin openings is employed to rotatably couple the gas spring to the door frame, whereby different lifting forces can be applied to the door by the user of the door by adjusting the position of the gas spring in the bracket. A brace is also provided to support the bracket and gas spring to enhance operation of the door. A resilient material such as EPDM is used to decelerate movement of the door leaf to the open position and provide a stable door leaf when in the open position. Sections of the door assembly are provided with screw studs to facilitate on-site construction and packaging and shipping of the door assembly.

Abstract: A shotgun having interchangeable barrels includes a buttstock having interchangeable combs. A low comb is provided for use when the gun is fitted with a barrel having a sighting rib. A high comb may be used when the gun is fitted with a barrel for slug shooting with a scope. The selected comb is disposed within a notch in the buttstock and is secured by a single fastener.