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| Number | Title | Issue Date |
| 4990748 | Apparatus for heating gases An apparatus for heating gases, particularly air, with a heating unit having a mounting part, at least one PTC component, at least one insulating frame part surrounding the latter, at least one contact plate and at least one insulating support. The PTC co... | 02/05/1991 |
| 4956545 | Heater with tap An electric heater with insulating carrying parts and heating conductors carried by the carrying parts and with at least one tap for tapping a voltage reduced compared with the voltage at the heating conductor. The carrying parts have slots through which ... | 09/11/1990 |
| 4948953 | Holding part for PTC components For the better handling of PTC components during the assembly of a corresponding heating arrangement, in the case of a holding part for PTC components with an insulating frame and at least one contact plate, a contact plate is firmly connected to the insu... | 08/14/1990 |
| 4942289 | Electric heating element with PTC component An electric heating element is proposed, which has a contact unit formed from at least one PTC component and contact plates resting on either side thereof and a casing, whereby for ensuring a good contact pressure in the end product in the unpressed state... | 07/17/1990 |
| 4845345 | Electrical heating element with meander-shaped windings An electrical heating element with a heat conductor in the form of meander-shaped windings, in which the individual windings are held in openings separated by solid parts in at least one insulating plate. For stabilization, especially with long, narrow de... | 07/04/1989 |
| 4671072 | Sensor for detecting frost deposits A sensor (1) for detecting frost deposits, particularly on evaporators of refrigeration plants or the like is proposed, in which between the spaced heat source (3) and heat sensor (4) is provided a thermal connection (2) made from a material, whose therma... | 06/09/1987 |
| 4418272 | Electric heater An electric heater, especially for small electric appliances, such as hair roller heaters, egg boilers, or the like, and a method of making same utilizes at least one heating element having contact-making zones on opposite planar parallel surfaces thereof... | 11/29/1983 |
| 4371777 | Continuous flow electric water heater A continuous flow or flash electric water heater, for example for use in a coffee making machine, includes a compound heating structure made up of at least two elongated generally parallelepyred shaped massive heating bodies of a material having a high th... | 02/01/1983 |
| 4341946 | Electrical resistance heating element In an electrical resistance heating element (1) comprising a heating conductor support (3) of insulating material and a heating conductor (4) of resistance wire wound in meander or sinuously coiled manner with loop ends or bights (6) and loop legs or runs... | 07/27/1982 |
| 4331860 | Electrical resistance heating element Electrical resistance heating element comprising at least one heating conductor in the form of an element which is provided at opposite surfaces with an electrical contacting means and is made of a material having a positive temperature coefficient of ele... | 05/25/1982 |
