Abstract: A device is provided for marking fin material as it is formed on a fin forming machine. Specifically, an air actuated device is connected to the machine cycle count. Each complete cycle of the fin forming machine is counted, and when the correct numbers of cycles have been met, the air switch allows the air cylinder to actuate and drive the indenter into the fin material and then withdraw the indenter to complete the marking process. The fin marking process is done without interruption to the fin forming cycle, and without damage to the fin material.

Abstract: A fin forming device folds fin material into a plurality of corrugations by creating a fold radius at each fold. The device comprises a substantially rectangular plane of metal having a front side, and an opposing back side. The perimeter of the plane is defined by a top edge which is applied to the fin material to form the fold radius, a bottom edge, and a pair of opposing side edges. Initially, each of the edges has a substantially similar thickness. An angled surface is created on at least one side of the plane, commencing in an interior area of the plane below the top edge of the plane and terminating at the top edge of the plane. This creates an angled blade surface along at least a portion of the top edge of the plane. The angled blade surface has a narrower thickness than the initial edge thickness.

Abstract: A quick change device is adaptable for use on a reciprocating press fin machine which continuously forms a metal sheet into sinuous or corrugated configuration by using tools associated with upper and lower opposed, metal-engaging tools, each movable toward and away from the other in a vertical forming stroke, and a first one of these tools also being movable in a variable stroke transverse to its vertical forming stroke. Wedge-shaped abutment elements and associated block elements having a wedge-shaped cavity therein adapted to receive the abutment elements, establish the length of transverse motion of the first tool. A structure is used to simulate the reciprocating press fin machine. A reader assembly digitally analyzes movement of the wedge-shaped abutment elements to set the transverse stroke length, based on the simulation provided by the structure, to allow precise alignment of the tools in the reciprocating press fin machine.

Abstract: An improved heat transfer means provides for a dual corrugated fin material which improves heat transfer by increasing the surface area of the fin without a corresponding increase in volume. The improved heat transfer means comprises a fin generated from a flat sheet of metal. The fin includes a first corrugated pattern having a first height, and a second corrugated pattern having a second height, wherein the first pattern is integral in the second pattern and the first height is less than the second height.

Abstract: A heat exchanger combines a lanced fin surface with a ruffled fin surface to create a lanced ruffled turbulizer. The lanced ruffled turbulizer combines the turbulence generated by lancing the heat transfer or turbulizer surface to the deflection forces on the fluid stream generated by a ruffled turbulizer to improve the thermal performance of the heat exchanger.

Abstract: A heat sink is created from a single or multiple lengths of compressed, corrugated fin, eliminating the need for a heat sink base plate. A length of corrugated fin is compressed in a fixturing operation to form a continuous top flat surface and a continuous bottom flat surface. After the fixturing operation, a bonding operation is performed to generate permanent continuous top and bottom flat surfaces on which elements requiring temperature control may be mounted directly, eliminating the cost and weight of a base plate.