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Class Information
Number: 338/279
Name: Electrical resistors > Ribbon resistance element bent or curved on flat side
Description: Subject matter wherein the resistance element constitutes an elongated continuous flat ribbon, strip, or tape of uniform cross-sectional dimensions and integral over its length between terminals, the element being bent or curved along its flat sides between terminals into a particular configuration while retaining the ribbon-like characteristic.

Sub-classes under this class:

Class Number Class Name Patents
338/282 Helical or wound 17
338/280 Zigzag or sinuous 66

Patents under this class:

Patent Number Title Of Patent Date Issued
8692647 Resistor grid assembly Apr. 8, 2014
7288749 Electrical heating device and method of its manufacture Oct. 30, 2007
7183522 Corrugated electric heating element and related radiant hotplate Feb. 27, 2007
6201220 System for fixing the heating resistance in a cooker plate Mar. 13, 2001
6127915 High temperature platinum resistance thermometer and method of producing such Oct. 3, 2000
5700992 Zigzag heating device with downward directed connecting portions Dec. 23, 1997
5396214 Dynamic braking grid resistor configuration for reducing EMI in an electric traction motor vehicle Mar. 7, 1995
5157373 Post glover resistor Oct. 20, 1992
4994634 Sheet switch Feb. 19, 1991
4847585 Center ventilated resistor grid Jul. 11, 1989
4845345 Electrical heating element with meander-shaped windings Jul. 4, 1989
4837549 Tapped resistor grid assembly Jun. 6, 1989
4829282 High efficiency high heat output electrical heater assembly May. 9, 1989
4801915 Heating unit, in particular for bread toasters Jan. 31, 1989
4789773 Electrical radiant heater for heating heating surfaces Dec. 6, 1988
4649368 Electrical resistance heating element Mar. 10, 1987
4617548 Current sensing resistance apparatus Oct. 14, 1986
4520487 High temperature electric furnace with metallic resistances in the form of hollow vertical heating tubes May. 28, 1985
4161648 Electrical radiation heater for a glass ceramic plate Jul. 17, 1979
4142062 Material heating furnace and heating element Feb. 27, 1979
4112410 Heater and method of making same Sep. 5, 1978
4100526 Grid resistor Jul. 11, 1978
4072921 Low inductance precision resistor deposited on an adhesive backing and wound on a bobbin Feb. 7, 1978
4011395 Electric furnace heater Mar. 8, 1977
3971912 Fixing arrangement for fusing tower images Jul. 27, 1976
3935376 Ceramic insulator for supporting a ribbon-type heating element Jan. 27, 1976

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