W.e.t. Automotive Systems Ag

Warme-Und Elektrotechnik B. Ruthenberg Gmbh

Warme-Undeletrotechn

Gunter Lorenzen

Michael Weiss

Hans-Georg Rauh

Ferdinand Schuller

Bodo Ruthenberg

Georg Haubner

Air-permeable heating device for a seat

In a method and the arrangement for operating an electric seat heating apparatus of a vehicle, it is provided, with a view to optimizing the heat-up behavior, that the given heat-up time or temperature, respectively, being reached, the heating power is preset by a microprocessor as a function of a field of characteristic curves or tables stored in a non-volatile memory such that for seats that differ in size, upholstery, and surface quality, the optimally to be supplied heating power or heating time, respectively, is empirically detected as a function of the desired seat temperature on the surface of the seating face or the rear and is stored in the non-volatile memory in the form of curves or tables, that a curve or table is selected from the field of characteristic curves or tables, respectively, by the microprocessor as a function of a coding recorded by the microprocessor, of the respective seat to the heated, and that then the power supply to the respective seat to be actually heated takes place in accordance with the selected curves or table.

Method and circuit arrangement for operating an electric seat heating

Conditioned seat

The electric steering-wheel heating element to be mounted on a steering wheel rim has a linear center region made of flat ribbon-shaped, electrically conductive material. A first side region and a second side region made of flat ribbon-shaped, electrically conductive material each have at least one curved side segment and. The shape of the center region and of the curved side segments is configured such that, after mounting, the center region covers an external circumferential region of the steering wheel rim, the first side region alongside a longitudinal side of the center region covers a side circumferential region on one side of the steering wheel rim and the second side region alongside the other longitudinal side of the center region covers a side circumferential region on the other side of the steering wheel rim.

Electric steering-wheel heating element

Controlling and monitoring circuit for electrical seat heating means,

Improved vehicle seats can be made in a process in which the seat-covering material and a flat heater are inserted into a negative mold for a vehicle seat and the mold is filled with in-situ foam because the flat carrier for the heating conductor of the heater is constituted by a braided wide-mesh grid made of plastic strings or plastic yarns, which during the filling of the negative mold for vehicle seats with in-situ plastic foam are surrounded by the foam substantially without a change of the porosity of the plastic foam.

Flat heater for incorporation in seats of vehicles

Growing community of inventors

Olching, Germany

Gunter Lorenzen