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Class Information
Number: 219/541
Name: Electric heating > Heating devices > With heating unit structure > With terminal or connector means (e.g., to external circuit means)
Description: Subject matter including specific terminal or connector elements whereby an electrical connection with an external electrical circuit may be made.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Patent Number Title Of Patent Date Issued
5218751 Method of making a resistance ignitor for igniting gaseous fuel Jun. 15, 1993
5213523 Apparatus and method of making an electrical connection to a current carrying device May. 25, 1993
5208444 Electrical connectors for electrically heated vehicle windows May. 4, 1993
5200154 Honeycomb heater having integrally formed electrodes and/or integrally sintered electrodes and method of manufacturing such honeycomb heater Apr. 6, 1993
5198640 Fully clad electric PTC heater with a finned protective casing Mar. 30, 1993
5192853 Heating set having positive temperatue coefficient thermistor elements adhesively connected to heat radiator devices Mar. 9, 1993
5170036 Resistance heating arrangement Dec. 8, 1992
5159176 Device for heating, by infrared radiation, fixed on a wall or the ceiling of a room of a building Oct. 27, 1992
5146536 High temperature electric air heater with tranversely mounted PTC resistors Sep. 8, 1992
5142609 Plug-in quartz infra-red radiator Aug. 25, 1992
5137591 Conductive polymeric heater Aug. 11, 1992
5132516 Glow plug having self-temperature control function Jul. 21, 1992
5128522 Resistance heater for a carryout pizza package or other food items Jul. 7, 1992
5126533 Substrate heater utilizing protective heat sinking means Jun. 30, 1992
5125070 PTC heater assembly with securely positioned PTC resistors Jun. 23, 1992
5122639 Electric hotplate Jun. 16, 1992
5118921 Metallic sheath heater with improved electrical connection between coil and sheath and method of manufacture thereof Jun. 2, 1992
5113480 Fluid heater utilizing dual heating elements interconnected with conductive jumper May. 12, 1992
5109473 Heater assembly for use in a corrosive environment Apr. 28, 1992
5089687 Bus bar jumper for heatable windshield Feb. 18, 1992
5086213 Device for detecting, during welding, variation in the physical state of the plastic material in a coupling piece of joining pipes Feb. 4, 1992
5081696 Electrically grounded water heater Jan. 14, 1992
5066852 Thermoplastic end seal for electric heating elements Nov. 19, 1991
5059768 Ceramic heater type glow plug Oct. 22, 1991
RE33716 Coupling devices for use with electrofusion fittings of thermoplastic material Oct. 15, 1991
5057672 Radiator having PTC electric resistance heating elements and spring-biased fin arrangement Oct. 15, 1991
5039844 PTC devices and their preparation Aug. 13, 1991
5034595 Cartridge heater assembly Jul. 23, 1991
5028763 High heat dissipation PTC heater structure Jul. 2, 1991
5023403 Device for connecting an electrical cable to a window pane having electrical conductors Jun. 11, 1991
5015824 Apparatus for heating a mirror or the like May. 14, 1991
5000662 Flat resistance for blower control unit of automobile air conditioner Mar. 19, 1991
4994650 Electric field detector for a heatable windshield Feb. 19, 1991
4977309 Organic PTC thermistor Dec. 11, 1990
4975563 Heating devices Dec. 4, 1990
4956545 Heater with tap Sep. 11, 1990
4952775 Floor heating panel Aug. 28, 1990
4948953 Holding part for PTC components Aug. 14, 1990
4942286 Apparatus for heating a mirror or the like Jul. 17, 1990
4938820 Joining of sheets Jul. 3, 1990
4933037 Method of producing a molded connection piece, in particular a boring saddle Jun. 12, 1990
4929813 Glow plug for diesel engine May. 29, 1990
4926030 End piece for tubular heater May. 15, 1990
4924074 Electrical device comprising conductive polymers May. 8, 1990
4922082 Thermal valve gate for plastic molding apparatus May. 1, 1990
4914751 Bipolar diesel engine glow plug having a U-shaped ceramic heater Apr. 3, 1990
4914274 Diesel engine glow plug having SiALON heater Apr. 3, 1990
4906313 Fusion weld method and assembly for forming a fusion welded joint between pipe sections Mar. 6, 1990
4899032 Electric heating element utilizing ceramic PTC resistors for heating flooring media Feb. 6, 1990
4899126 Thick film resistor type printed circuit board Feb. 6, 1990

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