Abstract: A heat exchanger includes a first manifold, aa second manifold, at least one heat exchange tube segment extending between and fluidly coupling the first manifold and the second manifold, and a fin having a non-linear configuration. A portion of the fin is affixed to an adjacent surface of the at least one heat exchange tube segment via a braze joint. The braze joint has a length, measured parallel to a length of the at least one heat exchange tube segment, less than or equal to 650 micrometers.

Abstract: A moisture detection sensor is used in a building structure to detect moisture penetration is a flat self-adhesive tape. It includes a substrate of dielectric, hydrophobic material. Two elongate, parallel, conductors are secured to the top surface and a protective layer of non-hygroscopic, water pervious material secured over the conductors. A pressure sensitive adhesive on a bottom surface of the substrate is covered with a release sheet. The sensor may include moisture probes which penetrate the protective layer, the respective conductors and the substrate and to extend into a building component to which the substrate has been adhered. Each probe is made from a conductive, corrosion resistant material. This is particularly useful with water absorbent building materials, such as wood, where the surface may appear dry, but the body is impregnated with water. The preferred moisture probe is a U-shaped metal staple driven by a power stapler.

Abstract: A moisture detection sensor self-adhesive tape is used in a building structure to detect moisture penetration and includes a substrate of dielectric, hydrophobic material. Two elongate, parallel, conductors are secured to the top surface of the substrate and a protective layer of non-hygroscopic, water pervious material secured to the to the top surface of the substrate, over the conductors. A pressure sensitive mounting adhesive is placed on a bottom surface of the substrate and covered with a release sheet. The sensor may include moisture probes adapted to penetrate the protective layer, the respective conductors and the substrate and to extend into a building component to which the substrate has been adhered. The preferred moisture probe is a U-shaped metal staple configured to be driven in by a conventional power stapler.

Abstract: An elongated substantially flat four-conductor moisture detection and location sensor is described. The sensor includes four parallel conductors laminated to a dielectric substrate. Two of the conductors are protected by a water pervious dielectric layer and form the water-sensing element. Two other conductors are covered by a water impervious dielectric layer and are used to loop-back one or more of the water-sensing conductors. Precise location of a water leak location is determined by connecting the four conductors to a resistance bridge. The design allows for the connection of a four-conductor cable to extend the monitoring and detection point to a convenient location without loss of location accuracy.

Abstract: An elongated substantially flat four-conductor moisture detection and location sensor is described. The sensor includes four parallel conductors laminated to a dielectric substrate. Two of the conductors are protected by a water pervious dielectric layer and form the water-sensing element. Two other conductors are covered by a water impervious dielectric layer and are used to loop-back one or more of the water-sensing conductors. Precise location of a water leak location is determined by connecting the four conductors to a resistance bridge. The design allows for the connection of a four-conductor cable to extend the monitoring and detection point to a convenient location without loss of location accuracy.

Abstract: A tool for slicing the gel filled buffer tube of a loose tube optical fiber construction including a set of blocks having a passage therein through which the buffer tube may be pulled, and a blade extending into the passage which lies within a plane containing the central axis of the passage. The tool may have a second blade oppositely directed from the first blade but spaced apart from the first blade in the longitudinal direction. Both blades may form an acute angle with respect to the passage exit.