Abstract: A protective cover adaptable to serve as a luggage accessory or be incorporated in a piece of luggage and designed to protect such luggage items, particularly net-type, weather sensitive, and degradable baggage, together with contents of the baggage from weather exposure. When the weather becomes unfavorable or when the situation to protect a luggage item arises, the protective cover is extended from the item and placed over the same. After the cover is positioned over such an item, the user may tighten the perimeter of the cover by pulling on strings that are incorporated within the cover. When the need for the protective cover is no longer needed, the user is able to fold the cover and insert the cover back into the backpack.

Abstract: A protective cover adaptable to serve as a luggage accessory or be incorporated in a piece of luggage and designed to protect such luggage items, particularly net-type, weather sensitive, and degradable baggage, together with contents of the baggage from weather exposure. When the weather becomes unfavorable or when the situation to protect a luggage item arises, the protective cover is extended from the item and placed over the same. After the cover is positioned over such an item, the user may tighten the perimeter of the cover by pulling on strings that are incorporated within the cover. When the need for the protective cover is no longer needed, the user is able to fold the cover and insert the cover back into the backpack.

Abstract: A protective cover adaptable to serve as a luggage accessory or be incorporated in a piece of luggage and designed to protect such luggage items, particularly net-type, weather sensitive, and degradable baggage, together with contents of the baggage from weather exposure. When the weather becomes unfavorable or when the situation to protect a luggage item arises, the protective cover is extended from the item and placed over the same. After the cover is positioned over such an item, the user may tighten the perimeter of the cover by pulling on strings that are incorporated within the cover. When the need for the protective cover is no longer needed, the user is able to fold the cover and insert the cover back into the backpack.

Abstract: A backpack assembly for holding audio components comprising a backpack having lower, upper, front, rear and two side faces. One of the side faces includes a plurality of pockets formed interiorly of the bag. One of the plurality of the pockets is sized to hold a speaker therein and a second of the plurality of pockets is sized to hold a radio therein wherein the radio and the speaker are operatively connected by a speaker wire extending from the speaker to the radio.

Abstract: Two types of corner couplings together with horizontally extending and vertically extending beams form a multi-cornered paneled frame structure. One coupling connects, with suitable connectors, horizontally and inwardly extending panels to the horizontally extending beams and the other coupling connects, with suitable connectors, vertically extending panels to said horizontally extending beams and to the vertically extending beams. Other suitable connectors secure the two types of couplings to each other.

Abstract: An improved acoustic signal generator has rotor and stator elements, each having a plurality of radially-extending lobes and intervening ports relatively positioned and configured to establish fluid dynamic forces that bias the generator into an open position, thereby imparting a "stable open" characteristic to the generator. The rotor is located downstream of the stator, and rotor lobes are outwardly tapered in the downstream direction and have underlap relative to the upstream stator lobes. The invention is especially suited for use in oil industry MWD operations to communicate downhole measurement data to a well surface during drilling. In one embodiment, undercuts on the rotor lobes impart a flutter action which clears debris.