Electric heating – Heating devices – With heater-unit housing – casing – or support means
Patent
1995-05-04
1996-11-26
Walberg, Teresa J.
Electric heating
Heating devices
With heater-unit housing, casing, or support means
219536, 219537, 219546, 219550, 338317, 338318, 338299, 338267, H05B 306
Patent
active
055782329
ABSTRACT:
An open coil electric heater comprising a rigid support frame composed of a pair of longitudinally extending, laterally spaced members, with cross members between and secured to the longitudinal members. The cross members carry ceramic insulator members which are detachably connected to the cross members. Each insulator member has an end formed with a slot at an acute angle to the side walls of the insulator member to pass a portion of a convolution of an electrical wire coil. Hook-like projections form a transverse indentation at the base of the slot to detachably hold the portion of the wire om the insulator member. The portion of the wire is secured to the insulator members in an expeditious manner and without the use of tools by twisting the wire portion so that the wire portion is aligned sufficiently with the slot to enable the coil to freely pass into said slot. The coil then springs back to a transverse orientation so that the coil portion fits against opposite side faces of the transverse indentation and is held in position by the hook-like projections.
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Easthom Karl
Hart & Cooley, Inc.
Walberg Teresa J.
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