Patent
   D248943
Priority
Dec 13 1976
Filed
Dec 13 1976
Issued
Aug 15 1978
Expiry
Aug 15 1992
Assg.orig
Entity
unknown
10
4
n/a
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.

King, Reynold C.

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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