Formable helical wire heating coil assembly

摘要

The supporting frame for a helical wire heating coil assembly is initially formed in a straight linear manner using an angular cross section shape and including integrally formed linear arrays of clips for mounting insulating stand-offs, attachment tabs for mounting the assembly and open notches that permit the frame to be subsequently formed into a circular or other arcuate shape.

主权项

1. A formable helical wire heating coil assembly adapted for attachment to a generally circular housing component, the assembly comprising:
an elongate sheet metal frame having an angular cross sectional shape including a first leg having a free edge and a second leg that extends transversely to said first leg, the frame having spaced along its length and formed integrally therewith a linear array of open notches in the first leg, the notches having spaced edges extending from the second leg to the free edge of the first leg, whereby the frame is formed in the plane of the first leg to at least partially close the notches and to assume an arcuate shape wherein the free edge of the first leg faces radially inwardly.