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The ornamental design for an insulator for an open coil electric heating unit, substantially as shown and described. |
FIG. 1 is a perspective view of an insulator for open coil electric heating unit, showing my new design;
FIG. 2 is a front elevational view of the insulator on an enlarged scale, the rear view being similar when the insulator is rotated 180 degrees about its longitudinal axis,
FIG. 3 is a side elevational view of the insulator on an enlarged scale, the opposite side being similar,
FIG. 4 is a sectional view, corresponding to the line 4--4 of FIG. 2,
FIG. 5 is an elevational view, looking from the bottom of FIG. 2, and
FIG. 6 is a sectional view corresponding to the line 6--6 of FIG. 2.
Patent | Priority | Assignee | Title |
4363959, | Aug 31 1981 | TUTCO, INC | Stand-off for resistance wires |
4628189, | Feb 11 1985 | EMERSON ELECTRIC CO , 8000 WEST FORISSANT AVENUE, PO BOX 4100, ST LOUIS, MISSOURI 63136, A CORP OF MISSOURI | Electric resistance heater |
5578232, | May 04 1995 | H&C ACQUISITION CORP | Open-coil heater assembly and insulator therefor |
6807220, | May 23 2003 | KANTHAL THERMAL PROCESS, INC | Retention mechanism for heating coil of high temperature diffusion furnace |
D253171, | May 16 1977 | Emerson Electric Co. | Insulator for electric heating elements |
D261260, | Oct 22 1979 | Emerson Electric Co. | Insulator for an open-coil electric heating element |
D262285, | Aug 22 1979 | Emerson Electric Co. | Insulator for supporting the heating coil of an electric heater |
D367844, | May 04 1995 | H&C ACQUISITION CORP | Heater insulator |
D727381, | Dec 30 2013 | SEALED UNIT PARTS CO , INC | Ceramic support rail |
D727987, | Dec 30 2013 | SEALED UNIT PARTS CO , INC | Ceramic insulator coil support |
Patent | Priority | Assignee | Title |
2673889, | |||
3935376, | Dec 18 1974 | Du-Co Ceramics Company | Ceramic insulator for supporting a ribbon-type heating element |
108489, | |||
23951, |
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