Abstract: An apparatus for shaping boreholes used in seismic operations. A drill body is attached to a drill bit and is movable in axial and rotational directions. Selective operation of the drill body causes a moveable sleeve to operate a reaming bit to extend through a drill body port and into contact with the borehole wall. A cover seals the portion of the port not covered by the reaming bit to prevent loss of a transport fluid within the drill body and to prevent drill cuttings from entering the drill body interior. The cover can be integrated within the movable sleeve or can comprise a separate component. The force exerted by the drill body against the drill bit can be proportional to the force exerted by the reaming bit against the borehole wall. The reaming bit can be operated separately or simultaneously with operation of the drill bit, and can be retracted and reset to perform another shaping operation at a different position within the borehole.

Abstract: An apparatus for shaping boreholes used in seismic operations. A drill body is attached to a drill bit and is movable in axial and rotational directions. Selective operation of the drill body causes a moveable sleeve to operate a reaming bit to extend through a drill body port and into contact with the borehole wall. A cover seals the portion of the port not covered by the reaming bit to prevent loss of a transport fluid within the drill body and to prevent drill cuttings from entering the drill body interior. The cover can be integrated within the movable sleeve or can comprise a separate component. The force exerted by the drill body against the drill bit can be proportional to the force exerted by the reaming bit against the borehole wall. The reaming bit can be operated separately or simultaneously with operation of the drill bit, and can be retracted and reset to perform another shaping operation at a different position within the borehole.

Abstract: A window regulator comprises a rail defining a central channel which receives an elongate flexible plastic tape having a plurality of slots, the width of the tape being sized to fit within the central channel, a drive mechanism for moving the tape, either electric or manual, and a universal housing connecting the rail and the drive mechanism. The universal housing can be used with either manual or electric window regulator designs. The universal housing has a central cavity which can receive an insert bracket for a manual drive drum when the drive mechanism includes a hand crank. The central cavity is sized to receive a larger, electric drive drum when the drive mechanism includes an electric motor. Either drive drum has teeth sized to engage the slots of the tape so that the drive mechanism can impart motion to the tape to raise and lower a windowpane. When the insert bracket is used, the tape is routed in the universal housing from a first slot, around the manual drive drum to a second slot.