Heating coil

Description

FIG. 1 is a top plan view of a heating coil showing my design disposed in a radiant heater;

FIG. 2 is a top plan view of the heating coil shown in FIG. 1;

FIG. 3 is a side elevation view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view of the heating coil of FIG. 2, viewed through a glass surface when the heating coil is energized to illuminate through said glass surface;

FIG. 6 is a second embodiment of a heating coil showing my new design disposed in a radiant heater;

FIG. 7 is a top plan view of the heating coil shown in FIG. 8;

FIG. 8 is a side elevation view thereof;

FIG. 9 is a bottom plan view thereof; and,

FIG. 10 is a top plan view of the heating coil shown in FIG. 7, viewed through a glass surface when the heating coil is energized to illuminate through said glass surface.

The broken line showing of a radiant heater in FIGS. 1 and 6, and of a rod of a radiant heater in FIGS. 5 and 10, is for illustrative purposes only and forms no part of the claimed design.

The broken line showing of a glass surface in FIGS. 5 and 10 is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D326906 June 9, 1992 McWilliams et al.
Foreign Patent Documents
0223966 September 1986 EPX
0303854 July 1988 EPX
3204760 August 1983 DEX
3315438 October 1984 DEX
87062771 June 1987 DEX
87112094 October 1987 DEX
3622415 January 1988 DEX
Patent History
Patent number: D340517
Type: Grant
Filed: Jan 15, 1991
Date of Patent: Oct 19, 1993
Assignee: E.G.O. Elektro-Gerate Blanc u. Fischer
Inventor: Martin Gross (Kaempfelbach)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Law Firm: Quarles & Brady
Application Number: 7/641,356
Classifications
Current U.S. Class: Radiant (D23/419); D/7407