Abstract: A drip-type coffee-maker includes a water reservoir (1) supplying a water-heater with continuous circulation (6), and a device (9) for treating the water in the reservoir with a water-soluble scale preventive agent. The water treating device (9) includes an element (10) for measuring out an amount of scale preventive agent (23) which is determined on the basis of the volume of water supplied to the water-heater (6) and which is injected into the water.

Abstract: A process for supplying a polyphase motor with electronic switching (M) from a voltage supply source (A), includes a passive electric filter downstream of the supply source (A), a conversion of the voltage supplied by the source (A) to supply the phases of the motor (M), using an assembly of controllable switches having either a passing condition or blocking condition, where each combination of conditions of the switches defines a conversion configuration. The process regulates the supply current about a reference current (Iref), and a sequence of magnetization and de-magnetization cycles of the phases of the motor (M) initiated by magnetization or de-magnetization references of the phases. During at least one period of sequencing per cycle, several pairs of conversion configurations are selected so that the mean current conforms as close as possible to the reference current (Iref).

Abstract: An electric kettle includes a tubular body (1), heating elements comprising an electric resistor (6) associated with a heating plate (8) mounted in the body lower part, defining with the side wall (3) of the body (1) a reservoir (10) of liquid to be heated and in direct contact by its upper surface with the liquid, and elements supporting a peripheral rim (8a) of the heating plate (8). The support elements comprise a vertical skirt (20) extending inside the body (1) and fixed on the inner surface (3a) of the body side wall (3) by first reversible fixing elements (28, 30), and the body (1) has a base formed by a lid (24) fixed on the skirt (20) with second reversible fixing elements (32, 37).

Abstract: A temperature sensor includes a semiconductor wafer (2) with a recess wherein is placed a sensitive element (3) which is heated in response to a target infrared radiation, and thermal insulating layer (16) provided between the sensitive element (3) and the wafer (2), a thermoelectric element (6) which generates a first electric signal (V1) representing the difference between the target temperature and a reference temperature, and a device sensing temperature by contact (5), transmitting a second signal (V2) representing the reference temperature. The sensor includes an electronic device for processing the signals (V1, V2) transmitted by the thermoelectric element (6) and the device sensing temperature by contact (5), this device consisting of component formed in the semiconductor wafer (2).

Abstract: Sole plate for pressing iron whose pressing surface comprises a coating improving the sliding of the iron on the materials to be pressed. The coating comprises an underlayer of satin-finished nickel and a surface layer of chromium. The underlayer of satin-finished nickel has a thickness comprised between 5 and 15 microns and the surface layer of chromium has a thickness comprised between 0.06 and 0.3 micron. The outer surface of the coating has a rugosity of at least 30.

Abstract: Steam iron sole plate comprising a heating metallic base (12) comprising a vaporization chamber, and a metallic plate (14) mounted on the base, whose external surface (15) forms a pressing surface and which is pierced by holes (22) communicating with the vaporization chamber. According to the invention, a tubular lug of resilient material (25) is disposed about each hole (22) of the plate (14) and borders the internal surface of the hole (22) so as to form a steam outlet passage (26).

Abstract: An appliance includes a housing (1) containing a motor (2) whose output shaft (8) passes through the housing base (4) and drives in rotation a tool (16) housed in a bowl (9) locked on the housing and closed by a lid (12); and a safety device (25) having a vertical thruster (27) mounted sliding in the bowl (9) peripheral wall (30) and actuated by a cam (43) borne by the lid (12) so as to penetrate in an opening (39) provided in the base to be urged to actuate a switch controlling the motor. A rigid cover (49) is mounted on the base movable between an inoperative position wherein it conceals the base opening (39), when the bowl is not on the base (4), and an operative position wherein it clears the opening (39) by the action of an actuating member (51) borne by the bowl (9) when the latter is locked on the base (4).

Abstract: A household mixer-blender includes a housing 1 with a reception seat 3. The housing contains an electric motor unit 4 whose output shaft projects into the seat 3. A removable bowl 7 includes a base 9 with a sidewall 10 and is urged to interlock in operating condition on the seat. A central part 12 of the base 9 carries a rotating tool 13 integral with shaft 14 passing through the electric motor unit 4 and base 9. A first safety device includes at least one retractably mounted blocking member 17 is mounted in the reception seat 3. The blocking member is designed to have a first inoperative position in which it is retracted by an actuating member 22 integral with bowl base 23 when the bowl 7 is properly fixed to the base 9, as well as an operative position in which the blocking member is no longer controlled by the actuating member 22 when the bowl 7 is not on the base 9 or is not properly fixed to such base.

Abstract: Steam iron comprising a water reservoir (17) communicating with a vaporization chamber (12) through an outlet (23) having a vertical communication passage (25), and a device (35) for adjusting the water admission flow rate into the vaporization chamber comprising a vertical throttle (39) whose lower end (44) has a bulge (46) and whose upper end (41) is secured to a manual control button (43). The bulge (46) of the throttle (39) is mounted gripped in the passage (25) of the outlet (23) and pointwise bridges a vertical groove (52) which is provided over a portion of the height of the passage (25) and which thus delimits with the bulge (46) of the throttle (39) a cross-section for passage of the water when the throttle (39) is in its steaming position.

Abstract: The invention concerns an electrical cooking appliance comprising, in a housing (12), a sheet metal bowl (14) coated on its inner (25) and outer (26) surfaces with a heat-resistant coating, and electrical heating means (16) associated with the bowl (14) and comprising a flat heating element (18) with screen-printed resistor (37). The invention is characterized in that the outer surface (26) of the bowl (14) base (30) has a zone (32) not provided with the coating (28) and on which is directly mounted the flat heating element (18) The invention is applicable to electric deep fryers in particular.