Abrégé

A method of manufacturing an air heating device (1), comprising the steps of preparing a support (2) extending along a main axis (A), a first resistance wire (3) and a second resistance wire (4), helically winding the first resistance wire (3) around the support (2) so as to create a first winding (W1) extending along the main axis (A) with a first feeding pitch (p1) and helically winding the second resistance wire (4) around the support (2) so as to create a second winding (W2) extending along the main axis (A). The second winding (W2) comprises a first portion (W2') arranged in parallel, both electrically and physically, to the first winding (W1 ) and with a pitch corresponding to the first pitch (p1 ), so that there is a coil of the second winding (W2) between two adjacent coils of the first winding (W1) and a second portion (W2'') arranged electrically in series to the first portion (W2') and physically in series to the first winding (W1), wherein the second portion (W2'') has a second pitch (p2) that is shorter than the first pitch (p1 ).

Classes IPC  ?

• H05B 3/16 - Eléments chauffants caractérisés par la composition ou la nature des matériaux ou par la disposition du conducteur le conducteur étant monté sur une base isolante

Abrégé

An air heating device for a hairdryer comprises an inner tubular body (2) extending along a central axis (A) and provided with an outer surface (2b) from which a plurality of mutually angularly spaced, radial baffles (4) extend so as to define a plurality of angular sectors (S), a corrugated resistive coil (6) extending circumferentially around the inner tubular body (2), a safety device (9) placed in electrical connection with said corrugated resistive coil (6), a thermostat (10) placed in electrical connection with the corrugated resistive coil (6), and an outer tubular body (16) made of insulating material and arranged coaxially with the inner tubular body (2) around the corrugated resistive coil (6). The safety device (9) and the thermostat (10) are respectively housed in a first (S1) and a second angular sector (S2), which are adjacent to each other and separated by a shared radial baffle (11), and the corrugated resistive coil (6) comprises a plurality of first turns (7a) provided with two rectilinear portions (12) positioned at the first (S1) and the second angular sector (S2), respectively, and at least one anchoring wave (8) interposed between the rectilinear portions (12) and overlying said shared radial baffle (11).

Classes IPC  ?

• A45D 20/12 - Leurs parties constitutives ou accessoires, p.ex. buses, supports
• A45D 20/10 - Dispositifs de séchage à main, p.ex. séchoirs à air

Abrégé

An air heating device for a hot air flow generator, comprises an inner tubular support (2) extending along a central axis (A), a plurality of radial baffles (3) extending from the inner tubular support (2) and angularly spaced apart from each other so as to define a plurality of angular sectors and a resistive coil (4) provided with at least one resistive wire (4a) helically extending about the inner tubular support (2), resting on the radial baffles (3), wherein each radial baffle (3) has a radially outer edge (3a) provided with a plurality of receiving grooves (5) for the resistive wire (4a) arranged in axial succession. The receiving grooves (5) of the same turn (S) formed on the outer edge (3a) of the radial baffles (3) are at an increasing distance from the first (2a) or second axial end (2b) of the inner tubular support (2).

Classes IPC  ?

• H05B 3/16 - Eléments chauffants caractérisés par la composition ou la nature des matériaux ou par la disposition du conducteur le conducteur étant monté sur une base isolante
• A45D 20/38 - Aménagements des moyens de chauffage électriques
• F24H 3/04 - Appareils de chauffage d'air à circulation forcée l'air étant en contact direct avec l'agent chauffant, p.ex. élément chauffant électrique

Abrégé

An air heating device (1) for a hair dryer, hand dryer, electric heater, paint stripper, and other similar devices for heating air, comprising at least one metal bridge (5) on which an electrical connector (6) is applied, the electrical connector (6) defining a gripping point suitable for retaining the electric wire (F) by interlocking it.

Classes IPC  ?

• H05B 3/16 - Eléments chauffants caractérisés par la composition ou la nature des matériaux ou par la disposition du conducteur le conducteur étant monté sur une base isolante
• A45D 20/18 - Bonnets flexibles avec apport d'air chaud
• F24H 3/04 - Appareils de chauffage d'air à circulation forcée l'air étant en contact direct avec l'agent chauffant, p.ex. élément chauffant électrique
• H01R 4/34 - Conducteurs logés sous la tête d'une vis
• H01R 4/48 - Connexions par serrage; Connexions par ressort utilisant un ressort, un clip, ou un autre organe élastique
• H01R 11/12 - Pièces d'extrémité se terminant par un œillet, un crochet ou une fourchette

Abrégé

A ceramic resistor, comprises a first ceramic layer (2), a conductive track (3) extending between at least two end portions (3a) according to a predefined path and a second ceramic layer (4) overlapping the first ceramic layer (2) and having at least two through apertures (5) placed at the at least two end portions (3a) of the conductive track (3). The ceramic resistor also comprises a pair of metal connectors (6) each associated with a respective through aperture (5) and comprising a base (7) overlapping and attached to a respective end portion (3a) of the conductive track (3) and a main body (8) defining a gripping point (10) suitable for retaining the electric wire (F) by interlocking it.

Classes IPC  ?

• H05B 3/26 - Eléments chauffants ayant une surface s'étendant essentiellement dans deux dimensions, p.ex. plaques chauffantes non flexibles le conducteur chauffant monté sur une base isolante
• H01R 12/51 - Connexions fixes pour circuits imprimés rigides ou structures similaires

Abrégé

An air heating device for a hairdryer comprises an inner tubular body (2) extending along a central axis (A) and provided with an outer surface (2b) from which a plurality of mutually angularly spaced, radial baffles (4) extend so as to define a plurality of angular sectors (S), a corrugated resistive coil (6) extending circumferentially around the inner tubular body (2), a safety device (9) placed in electrical connection with said corrugated resistive coil (6), a thermostat (10) placed in electrical connection with the corrugated resistive coil (6), and an outer tubular body (16) made of insulating material and arranged coaxially with the inner tubular body (2) around the corrugated resistive coil (6). The safety device (9) and the thermostat (10) are respectively housed in a first (S1) and a second angular sector (S2), which are adjacent to each other and separated by a shared radial baffle (11), and the corrugated resistive coil (6) comprises a plurality of first turns (7a) provided with two rectilinear portions (12) positioned at the first (S1) and the second angular sector (S2), respectively, and at least one anchoring wave (8) interposed between the rectilinear portions (12) and overlying said shared radial baffle (11).

Classes IPC  ?

• H05B 3/16 - Eléments chauffants caractérisés par la composition ou la nature des matériaux ou par la disposition du conducteur le conducteur étant monté sur une base isolante
• A45D 20/38 - Aménagements des moyens de chauffage électriques

Produits et services

Silver giftware, namely jewellery boxes of silver; jewellery; ornaments (jewellery); works of art of precious metal; carvings of precious metal; magnetic jewellery; clocks; watches. Plate racks. Candelabra [candlesticks], coffee services [tableware], tea services [tableware], liqueur sets, jugs of precious metal, jugs not of precious metal, trivets [table utensils], serving bowls, cabarets [trays].

Abrégé

A method of manufacturing a coaxial electric resistance (1) comprises preparing a first insulating support (2) comprising a predetermined number of first blades (3) and winding a resistive wire (1 1) around the first insulating support (2) forming a first winding (9). A hollow insulating body (12) is fitted onto the first winding (9) in a position radially outside with respect to the first winding (9). A second insulating support (13) comprising a predetermined number of second blades (14) is arranged in a position radially outside the hollow insulating body (12). The resistive wire (11) is wound around the second insulating support (13) forming a second winding (17).

Classes IPC  ?

• H05B 3/16 - Eléments chauffants caractérisés par la composition ou la nature des matériaux ou par la disposition du conducteur le conducteur étant monté sur une base isolante