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Patent EP0352499A2 successfully refreshed from Google Patents.
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EP0352499A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

A heating device for washing and/or drying machines for laundry

Assignee: Industrie Zanussi SpA
•
Filing: 1989-06-30
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Granted: —
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Expires: 2009-06-30
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Abstract

Abstract A heating device for washing and/or drying machines for laundry, com­prising a parallelepiped plate (4) made of electrically insulating material having applied to one surface thereof, by the silk screen process or simi­lar procedures, at least one electrical resistor (5) based on electrically conductive metal powders mixed with glass frit, the resistor having a wavy or other pattern. The plate (4) is placed inside the vessel of the washing or dry­ing machine for laundry and the corresponding terminals (6, 7) of the resistor (5) are then connected with the power supply network of the machine. One thus obtains an elevated heat radiating capacity of the plate (4) adapted to effect rapid heating of the washing solution or the drying air of the machine in question.

Inventors

  • 👤 Piero Durazzani

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 03:19
CPC Classifications
D; D06; D06F; D06F39/00; D06F39/04; D06F58/00; D06F58/20; D06F58/26; H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/26; H05B3/262

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 93 words
A heating device for washing and/or drying machines for laundry, characterized in that it comprises at least one plate (4) made of electri­cally insulating material, preferably of a curved parallelepiped shape, and heating means (5) consisting of electrically conductive material applied to at least one surface of the plate (4) according to a predetermined pat­tern, said plate (4) being applicable in removable fashion in the vessel (15) of the machine and being designed so to allow for connection to the power supply network of the terminals (6, 7) of the heating means (5).
Claim 2
Dependent Claim 93 words
A heating device for washing and/or drying machines for laundry, characterized in that it comprises at least one plate (4) made of electri­cally insulating material, preferably of a curved parallelepiped shape, and heating means (5) consisting of electrically conductive material applied to at least one surface of the plate (4) according to a predetermined pat­tern, said plate (4) being applicable in removable fashion in the vessel (15) of the machine and being designed so to allow for connection to the power supply network of the terminals (6, 7) of the heating means (5).
Claim 3
Dependent Claim 41 words
The heating device of claim 1, characterized in that the heating means (5) comprise one or more conductive tracks based on electrically conductive metal powders mixed in variable proportions with glass frit and subjected to heat treatments in the conventional way.
Claim 4
Dependent Claim 68 words
The heating device of claim 1, characterized in that the plate (4) is provided with projections (8, 9) extending from the lateral edge (10) of the plate and in which the terminals (6, 7) are respectively situated, the projections (8, 9) being insertable through corresponding openings (17) in the vessel (15) through the intermediary of sealing gaskets (19) and being lockable in position by means known per se.

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