Abstract: An implantable medical lead may include an electrode at a distal portion of the lead that is configured to monitor or provide therapy to a target site. The lead may include a visible indicator that is visible to the naked eye of a clinician at a medial portion of the lead that is configured to indicate when the electrodes of the lead are longitudinally and radially aligned properly to monitor or treat the target site. A clinician may insert the lead into the patient using an introducer sheath inserted to a predetermined depth into the patient and subsequently aligning the distal portion of the lead by orienting the indicator at an entry port of the introducer sheath.

Abstract: One or more devices are provided that are configured to detachably engage within a modular system. The one or more devices are expandable to provide a surface to perform work.

Abstract: A support plate apparatus capable of separately supporting two or more independent tube bundles within a heat exchanger is described. The apparatus includes at least one bundle support plate and at least two tube bundles. Bundle support plates are separately disposed and substantially parallel. Each bundle support plate has at least two openings. Each opening along one the bundle support plate is dimensioned, located, and aligned in a complimentary arrangement with one opening along each remaining bundle support plates. Each tube bundle includes at least two grids each comprised of interlocking plates and a plurality of tubes. Each tube bundle is disposed within one complimentary arrangement of the openings. Each grid is disposed within and contacts one opening.

Abstract: A tube support device is presented. The present invention includes at least two first plates and at least two second plates each having a plurality of slots mutually arranged and aligned so as to allow four or more plates to interlock and form a grid of depth-wise planar extent thereby providing at least one square-shaped opening. Each first plate and each second plate have a plurality of u-shaped nodules. At least one u-shaped nodule along each first plate and along each second plate extends into each square-shaped opening. U-shaped nodules are disposed parallel to and contacting a tube passing through each square-shaped opening. The grid is surrounded by a fluid with a flow field parallel to each tube and may include a secondary flow field crosswise disposed with respect to each tube. In yet another embodiments, the present invention is positioned within a shell and tube heat exchanger so as to support a plurality of tubes passing there through.

Abstract: A stake of U-shaped cross-section which, when inserted in a tube bundle between parallel rows of tubes, dampens vibrations and provides support. One stake end is arcuately shaped for engagement with the end tube in a tube row and in one embodiment an aperture is provided to accommodate a restraint which retains the stakes in series in their engagement mode.

Abstract: A supporting means for the tubes in a tube bundle arranged in an array having a plurality of rows of parallel tubes with lanes therebetween is constructed of a plurality of first and second strip members extending through lanes of the bundles, with the lanes through which the first strip members extend being transverse to the lanes through which the second strip members extend, and a frame extending around the periphery of the tube bundle array in engagement with the strip members for retaining the same in place.

Abstract: A supporting means for a tube bundle arranged in an array having a plurality of rows of parallel tubes is constructed of a plurality of first and second strip members extending transversely to one another and being interlocked at cooperating slots to form a lattice structure of crossed strips with openings for receiving the tubes, and a frame extending around the periphery of the tube bundle array in engagement with the ends of the strip members.

Abstract: Rows of heat exchange tubes are supported by transversely disposed support strips having a plurality of U-shaped members interconnected end to end in a manner so that said strips act as a structural member supporting the weight of the tubes and additional support elements from all rows above a given row. Each leg of each U-shaped member converges upwardly or downwardly at an angle of about 8.degree. to 15.degree. with the vertical.

Abstract: A condenser shell for a large steam condenser is installed at a building site of a power plant without any tube bundles. One or more years later, the tube bundles are designed, constructed and installed in the shell.

Abstract: Rows of heat exchange tubes are supported by transversely disposed support strips having a plurality of V-shaped members interconnected end to end in a manner so that said strips act as a structural member supporting the weight of the tubes and additional support elements from all rows above a given row. Each leg of each V-shaped member has a generally triangular tab bendable out of the plane of its associated leg.

Abstract: An L-shaped member is used for positioning a plurality of tube support plates at predetermined spaced locations on the L-shaped member with the tube holes of the support plates aligned. The L-shaped member is portable and includes a plurality of longitudinally separated members for locating the tube support plates with a predetermined spacing between each tube support plate.

Abstract: An L-shaped member is used for positioning a plurality of tube support plates at predetermined spaced locations on the L-shaped member with the tube holes of the tube sheets aligned. The L-shaped member is portable and includes a plurality of longitudinally separated members for locating the tube support plates with a predetermined spacing between each tube support plate.