Abstract: A method of forming a flexible conduit including: providing an elongated flexible metallic strip having a central portion disposed between a first and a second end portion, wherein at least a portion of the central portion includes a cross-sectional thickness TC which is less than a maximum cross-sectional thickness TM of the elongated shaped strip; rolling the first end portion in a first direction and the second end portion in a second direction generally opposite the first direction to form a shaped flexible strip; and helically winding the shaped flexible strip upon itself.

Abstract: A flexible cable may include an elongated shaped strip helically wound around itself to form a generally tubular body having at least one interior passageway and at least one conductor at least partially disposed within the interior passageway. The elongated shaped strip may include a non-rectangular cross-sectional thickness having a central portion disposed between a first and a second end portion. The first and second end portions may extend generally outwardly from the central portion from generally opposite sides. At least a portion of the central portion may include a cross-sectional thickness TC which is less than a maximum cross-sectional thickness TM of the elongated shaped strip. The first and second end portions may include a first and a second cross-section thickness TS1, TS2, respectively, wherein at least one of the first and second cross-section thicknesses TS1, TS2 is greater than the cross-sectional thickness TC.

Abstract: A method of forming a flexible conduit including: providing an elongated flexible metallic strip having a central portion disposed between a first and a second end portion, wherein at least a portion of the central portion includes a cross-sectional thickness TC which is less than a maximum cross-sectional thickness TM of the elongated shaped strip; rolling the first end portion in a first direction and the second end portion in a second direction generally opposite the first direction to form a shaped flexible strip; and helically winding the shaped flexible strip upon itself.

Abstract: A heat exchanger includes a tubular portion configured to carry a first heat exchange medium and a finned portion coupled to the tubular portion. The tubular portion includes a tube and a coating disposed on the tube. The finned portion includes a fin strip disposed in a groove formed in the coating to secure the fin to the tube portion.

Abstract: A flexible cable may include an elongated shaped strip helically wound around itself to form a generally tubular body having at least one interior passageway and at least one conductor at least partially disposed within the interior passageway. The elongated shaped strip may include a non-rectangular cross-sectional thickness having a central portion disposed between a first and a second end portion. The first and second end portions may extend generally outwardly from the central portion from generally opposite sides. At least a portion of the central portion may include a cross-sectional thickness TC which is less than a maximum cross-sectional thickness TM of the elongated shaped strip. The first and second end portions may include a first and a second cross-section thickness TS1, TS2, respectively, wherein at least one of the first and second cross-section thicknesses TS1, TS2 is greater than the cross-sectional thickness TC.

Abstract: A method of joining two pieces of helically wound armored cable sheathing, including trimming adjacent ends of the two pieces of armored cable sheathing to provide complimentary interlocking features. The two pieces of armored cable sheathing are threadably coupled by engaging the complimentary interlocking features and twisting the two pieces of armored cable sheathing. An electrically conductive member is placed in electrical contact with both of the pieces of armored cable sheathing, and a protective covering is applied over the joint between the two pieces of armored cable sheathing to mechanically coupled the pieces of armored cable sheathing to prevent the untwisting of the pieces.

Abstract: A method and apparatus for casting a metal strip by freezing a molten metal on an auger. The auger is arranged extending partially into the molten metal and the molten metal is allowed to at partially solidify on the auger. The auger is rotatable to convey the at least partially solidified molten metal axially along the auger and the strip of at least partially solidified molten metal is collected from the auger.

Abstract: A method of forming an extended surface heat transfer fin by differentially rolling a metal strip having a wedge-shaped profile. The method includes linearly stretching the thicker edge of the metal strip to a greater degree than the thinner edge.

Abstract: A method of forming an extended surface heat transfer fin by differentially rolling a metal strip having a wedge-shaped profile. The method includes linearly stretching the thicker edge of the metal strip to a greater degree than the thinner edge.

Abstract: A connector for joining flexible electrical conduit to a housing such as a junction box, fixture or the like which is formed cylindrically from light metal and includes relatively flexible arms depending from a relatively stiff face portion, retaining members flaring from and extending for a substantial portion of the length of the flexible arms. Multiple barbs are formed on the flexible arms to engage the conduit and flanges are formed at the extremity of the flexible arms to coopperate with the retaining members to clamp the connector to the housing.

Abstract: A center-spine mounted tandem cantilevered rolling mill includes three or more pairs of upper and lower spindles. An elongated rigid center spine extends horizontally midway between the upper and lower spindles. The upper spindles are removably mounted above this center spine by upper front and rear bearings, with their axes extending parallel and oriented perpendicular to the length of the spine. The front ends of the upper spindles project forward centilevered beyond the spine for carrying the upper work rolls. The lower spindles are removably mounted below this center spine by lower front and rear bearings in alignment with the respective upper spindles. The front ends of the lower spindles project forward cantilevered beyond the spine for carrying the lower work rolls. Each pair of upper and lower work rolls is called a "stand".

Abstract: Metal strip is slit by passage between a pair of rollers which are flanged and mate together in close tolerance interfitting relationship to completely contain and confine the strip cross section. The rollers compressively work the full width of the strip, thereby significantly reducing its thickness. The working portions of each of the rolls have at least two neighboring roll surfaces which are offset in a direction radially with respect to their axes of rotation, i.e., in a "stepped" relationship, the amount of offset being sufficiently great for simultaneously separating the strip into at least two resultant substrips while the thickness of the substrips is being significantly reduced. Both edges of each of the resultant substrips have an attractively polished appearance without sharpness or burr, and the substrips are produced without camber.