Methods of assembling open coil electrical resistance heaters involving butt welding of rails and using welded insulator support clips with bendable tabs
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 3, 2004
Grant Date -
Oct 16, 2003
app pub date -
Apr 2, 2003
filing date -
Sep 21, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heater having a frame rail and clips, attached to the rail, for securing insulators for supporting a heater coil. Each clip has a main body having a structural member for securing to the rail, and having a pair of flanges symmetrical about a central axis. Each flange has a cut-out for supporting an insulator, the cut-out having an open end, a back abutment edge and a pair of side abutment edges. A bendable tab is located at either side of the open end, each having a first and a second position. In the first position an insulator is insertable into the cut-out, and the insulator is secured by bending the tabs to their second position. Optionally the main body has a cross-section that accommodates the cross section of the rail and the rail is welded to the channel. Alternatively, a plurality of clinching flaps extend from the main body, the flaps shaped and dimensioned for bending around and clinching the rail.
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