Abstract: A needle guide (10) for guiding the insertion of a needle (12) in a patient (14), the needle guide (10) comprising: a base element (16), the base element (16) including an abutment section (20) for abutting against the patient (14) and a spacer (22) extending from the abutment section (20); and a guiding element (18), the guiding element (18) defining at least one guiding aperture (36) extending therethrough for inserting the needle (12) therethrough; the guiding element (36) being removably attachable to the spacer (22) and movable between a distal position and a proximal position. In the distal position, the guiding element (18) is attached to the spacer (22) in a spaced apart relationship relatively to the abutment section (20), and, in the proximal position, the guiding element (18) is detached from the spacer (22) and substantially adjacent to the base element (18).

Abstract: A polyphase bus bar mounting structure mounted to a support structure is disclosed. The support structure may comprise any of a rack, wall or a segment of a wind turbine tower. The polyphase bus bar mounting structure has a plurality of cylindrical tubular conductors arranged substantially parallel to each other. Each of the tubular conductors has first and second opposing end portions adapted for connection with conductors of other polyphase bus bar mounting structures. Insulation surrounds each of the tubular conductor. The bus bar mounting structure has first and second connectors. The first connector fixedly mounts the cylindrical tubular conductors adjacent the first end portions thereof to the support structure. The second connector flexibly mounts the cylindrical tubular conductors adjacent the second end portions thereof to the support structure.

Abstract: A polyphase bus bar mounting structure mounted to a support structure is disclosed. The support structure may comprise any of a rack, wall or a segment of a wind turbine tower. The polyphase bus bar mounting structure has a plurality of cylindrical tubular conductors arranged substantially parallel to each other. Each of the tubular conductors has first and second opposing end portions adapted for connection with conductors of other polyphase bus bar mounting structures. Insulation surrounds each of the tubular conductor. The bus bar mounting structure has first and second connectors. The first connector fixedly mounts the cylindrical tubular conductors adjacent the first end portions thereof to the support structure. The second connector flexibly mounts the cylindrical tubular conductors adjacent the second end portions thereof to the support structure.

Abstract: A high voltage, high current telescopic disconnect switch suitable for use in isolated phase bus duct has two fixed conductors and a movable telescopic conductor coaxially disposed within the first fixed conductor and movable to a closed position bridging the first and second fixed conductors. A plurality of contact fingers are mounted to the fixed conductors and have contact surfaces that extend into engagement with the telescopic conductor to make electrical contact between the fixed conductors through the telescopic conductor when in a closed position. The contact surface of each of the fingers comprises a first tip portion that extends beyond the fixed conductor and has a first radius that is slightly greater than the radius of the telescopic conductor so that the first tip portion presents an arcuate width that overlies in wiping electrical contact the telescopic conductor when in the closed position.

Abstract: A high voltage, high current telescopic disconnect switch suitable for use in isolated phase bus duct has two fixed conductors and a movable telescopic conductor coaxially disposed within the first fixed conductor and movable to a closed position bridging the first and second fixed conductors. A plurality of contact fingers are mounted to the fixed conductors and have contact surfaces that extend into engagement with the telescopic conductor to make electrical contact between the fixed conductors through the telescopic conductor when in a closed position. The contact surface of each of the fingers comprises a first tip portion that extends beyond the fixed conductor and has a first radius that is slightly greater than the radius of the telescopic conductor so that the first tip portion presents an arcuate width that overlies in wiping electrical contact the telescopic conductor when in the closed position.

Abstract: In a telescopic switch between a step-up transformer and a generator, axially spaced sets of three alignment mechanisms each are disposed in a housing. Each mechanism includes puck secured to an insulator secured in turn to a fixed conductor, an inner ring and a base plate. The puck is threaded into an opening through the inner ring and has an axis of rotation relative to the inner ring opening offset from the axis of rotation of the inner ring relative to the base plate. By screw threading the puck relative to the inner ring, radial adjustment of an attached conductor is provided. By rotating the inner ring, the eccentrically mounted puck carrying the insulator and fixed conductor is rotated about the geometric axis of the opening in which the inner ring rotates for displacing the fixed conductor laterally.