Abstract: A method and apparatus for shrink-wrapping a heat sealable thermoplastic film about regular and irregular shaped articles is provided, wherein the film is provided above and below the article, one or more heat-sealing blades are generally configured to the article exterior contour to heat seal the film material about the article, the heat-sealing blade having an electrically actuated healing element within insulated material, and the spacing of the heat-sealing blade adjacent the article is intentionally non-uniform in predetermined manner. A contoured heat-sealing blade assembly is provided within split-molds, which may have associated heating ports to control the temperature of the sealing operation within different zones of the mold.

Abstract: A remotely controlled tool for marking the location of defective tubes in a heat exchanger tube sheet, comprising an axially extensible pilot which is extended into and retracted from the defective tube to be marked by means of an internally threaded captive nut, which is attached to the pilot and is in threaded engagement with an externally threaded drive screw. The drive screw is driven by a reversible drive motor. Marking of a tube is accomplished by means of a paint-saturated annular felt marking pad carried in a cylindrical sleeve which surrounds and is axially slideable with respect to the pilot. The marking pad is driven outwardly along the pilot to engage the tube sheet surrounding the defective tube and is retracted after the marking function has been performed by means of a solenoid.

Abstract: A remotely controlled tool for marking the location of defective tubes in a heat exchanger tube sheet, comprising an axially extensible pilot which is extended into and retracted from the defective tube to be marked by means of an internally threaded captive nut, which is attached to the pilot and is in threaded engagement with an externally threaded drive screw. The drive screw is driven by a reversible drive motor. Marking of a tube is accomplished by means of a paint-saturated annular felt marking pad carried in a cylindrical sleeve which surrounds and is axially slideable with respect to the pilot. The marking pad is driven outwardly along the pilot to engage the tube sheet surrounding the defective tube and is retracted after the marking function has been performed by means of a solenoid.