Fin-type heat exchange unit with nonregistering fin edges for frost-inhibiting purposes

Claim 1

A HEAT EXCHANGE UNIT COMPRISING IN COMBINATION A LENGTH OF TUBE STOCK OF SERPENTINE CONFIGURATION AND PRESENTING STRAIGHT PARALLEL REACH SECTIOINS LYING IN A COMMON PLANE AND CONNECTED TOGETHER AT THEIR ENDS BY REVERSE BENDS, AND A SERIES OF CLOSELY SPACED ELONGATED PARALLEL STRIPS OF FIN STOCK SECURED TO AND EXTENDING TRANVERSELY BETWEEN SAID REACH SECTIONS AT A RIGHT ANGLE TO SAID COMMON PLANE, EACH STRIP PRESENTING OPPOSITELY FACING INSIDE AND OUTSIDE EDGES RESPECTIVELY, SAID STRIPS BEING OF IDENTICAL SIZE AND CONFIGURATION, THE INSIDE EDGES OF THE STRIPS BEING FORMED WITH CIRCULAR NOTCHES IN THE FORM OF MAJOR CIRCLE SECTORS AND WITHIN WHICH THE REACH SECTIONS ARE PRESSED WITH A TIGHT FIT, THE OUTSIDE EDGES OF THE STRIPS BEING FORMED WITH OUTWARDLY PROJECTING EARS WHICH CORRESPOND IN SIZE AND SHAPE TO THE SIZE AND SHAPE RESPECTIVELY OF SAID CIRCULAR NOTCHES, SAID NOTCHES AND EARS BEING IN PAIRED TRANSVERSE ALIGNMENT ACROSS THE STRIPS, THE INSIDE EDGES OF THE SRIPS TERMINATING IN THE VICINITY OF SAID COMMON PLANE, ONE SET OF ALTERNATE STRIPS IN THE SERIES BEING REVERSELY POSITIONED WITH RESPECT TO THE OTHER SET OF ALTERNATE STRIPS WHEREBY THE OUTSIDE EARED EDGES OF THE TWO SETS LIE ON OPPOSITE SIDES OF SAID COMMON PLANE AND TERMINATE IN RESPECTIVE PLANES WHICH ARE PARALLEL TO AND EQUALLY SPACED FROM SAID COMMON PLANE, ND WHEREBY ADJACENT EARED EDGES OF EACH SET ARE DISPOSED ON STRIPS WHICH ARE ONCE REMOVED FROM EACH OTHER AND WHICH ARE CONSEQUENTLY DEVOID OF INTERVENING FIN STOCK MATERIAL.