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US 4,172,496 AGranted
Heat exchanger assembly
AssigneeMcCord Corporation
InventorWilliam Melnyk
Life of this patent
Estimating the term…
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AssigneeMcCord Corporation
InventorWilliam Melnyk
Estimating the term…
A heat exchanger assembly of the type having a heat transfer core element which includes a plurality of fins in parallel stacked relationship for defining heat transfer surfaces and a plurality of fluid carrying tubes extending transversely through the fins for defining a fluid circuit, the assembly including at least one tube-to-tube joint, the improvement comprising a solderless connection at the tube-to-tube joint wherein one of the tubes includes an end having an annular, outwardly extending shoulder followed by an inwardly tapered flared portion for receiving the outwardly tapered portion of the other portion and the other of the tubes including an end having an outwardly flared portion for receiving the outwardly tapered portion of the other tube end and an inwardly directed flange clinched over the shoulder of the other tube end to produce a solderless mechanical connection between the two tubes.
A heat exchanger assembly of the type having a heat transfer core element which includes a plurality of fins in parallel stacked relationship for defining heat transfer surfaces and a plurality of fluid carrying tubes extending transversely through said fins for defining a fluid circuit, said assembly including at least one tube-to-tube joint, the improvement comprising a solderless connection at said tube-to-tube joint wherein one of said tubes includes an end having an annular outwardly extending shoulder followed by an inwardly tapered portion and said other of said tubes includes an end having an outwardly flared portion for receiving said inwardly tapered portion of said other tube end and an inwardly directed flange clinched over said shoulder of said other tube end, said inwardly directed flange forcibly wedging said tapered portion tightly into said flange portion to lock said tubes together.
Dependencies are inferred from the claim text.