Abstract: Apparatus for forming an underground passageway and simultaneously laying therein a conduit or other elongate components comprises a rotary drill member coupled to a rotary and axially movable drill stem. The coupling is one which virtually automatically enables the drill stem to be coupled to and uncoupled from the drill member and comprises as one embodiment interlocking driving lugs carried by the drill stem and the drill member. The driving lugs are sandwiched between telescoped portions of the drill member and the drill stem and thereby are reinforced by such portions of the drill stem and the drill member in such manner as to preclude movement of the driving lugs in both radially inward and radially outward directions. Other couplings can be used.

Abstract: Apparatus and methods for forming an underground passageway and simultaneously laying therein a conduit or other elongate components comprises a rotary drill member coupled to a rotary and axially movable drill stem. The coupling is one which virtually automatically enables the drill stem to be coupled to and uncoupled from the drill member and comprises as one embodiment interlocking driving lugs carried by the drill stem and the drill member. The driving lugs are sandwiched between telescoped portions of the drill member and the drill stem and thereby are reinforced by such portions of the drill stem and the drill member in such manner as to preclude movement of the driving lugs in both radially inward and radially outward directions. Other couplings can be used.

Abstract: Apparatus and methods for forming an underground passageway and simultaneously laying therein a conduit or other elongate components comprises a rotary drill member coupled to a rotary and axially movable drill stem. The coupling is one which virtually automatically enables the drill stem to be coupled to and uncoupled from the drill member and comprises interlocking driving lugs carried by the drill stem and the drill member. The driving lugs are sandwiched between telescoped portions of the drill member and the drill stem and thereby are reinforced by such portions of the drill stem and the drill member in such manner as to preclude movement of the driving lugs in both radially inward and radially outward directions.

Abstract: Service carts are provided that can be advantageously used to hold both diagnostic tools and repair tools and can be flexibly configured or customized for different work environments or worker preferences. The service carts include a cabinet having two side outer-walls, a back outer-wall, a bottom, and a top. The cabinet can include a plurality of configurable storage spaces with each storage space having a height that is approximately an integer multiple of a minimum storage space height. The cabinet can also be configured to provide electrical power into storage spaces in the cabinet. The cabinet top can comprise a plurality of slots adapted to hold mounting brackets adjustable along a length of the slots. The cabinet may include a fan that pulls air into the cabinet through a filter.

Abstract: Apparatus and methods for forming an underground passageway and simultaneously laying therein a conduit or other elongate components comprises a rotary drill member coupled to a rotary and axially movable drill stem. The coupling is one which virtually automatically enables the drill stem to be coupled to and uncoupled from the drill member and comprises interlocking driving lugs carried by the drill stem and the drill member. The driving lugs are sandwiched between telescoped portions of the drill member and the drill stem and thereby are reinforced by such portions of the drill stem and the drill member in such manner as to preclude movement of the driving lugs in both radially inward and radially outward directions.

Abstract: An apparatus for automated key retrieval and deposit includes a housing and a key storage rack assembly positioned within the housing. The automated key retrieval and deposit apparatus also includes a key holder for holding a key to be retrieved positioned on the key storage rack, and a key holder actuating mechanism operatively connected to the key holder, for actuating the key holder between an extended position and a retracted position. The automated key retrieval and deposit apparatus further includes a cover pivotally connected to the key storage rack and actuatable between a closed position and an open position, wherein the cover, in the closed position, exerts a force on the keyholder to retain the key on the key holder.