Abstract: A waterproof fixture (14) is attached to the hopper (12) for transferring a powder product (P) which has been fabricated in a pharmaceutical reactor into a transport container (10). The container (10) is attached to the device (14) by a two door transfer system (26, 44). The device (14) permits the opening of the double doors, to empty the openings in front of the hopper and the container and to join the same automatically by means of telescoping delivery lines (66).

Abstract: A support frame (1) for storage battery cells individually enclosed in cases (11) made of molded insulating synthetic material, the frame is constituted of a metal box comprising at least two side longitudal members (2, 3), two frame end plates (4, 5) interconnecting the ends of the side longitudinal members, and at least one element (6) for supporting said cases when said frame is lifted, two facing side longitudinal members each including a flexible wall (9, 10) which is semi-free, and sloping slightly relative to the vertical so as to narrow the passage into the frame when going down towards the bottom of the frame, and the bottom ends of said flexible walls co-operating ratchet-like with longitudinal projections (12, 13) or grooves carried by the cases of said cells on pairs of opposite faces and preventing the cases from being extracted once inserted even in the event of said frame being turned upsidedown.

Abstract: A method and device for controlling the power supplied to an a.c. powered load by zero-passage switching.A ripple voltage which is superimposed on the control voltage synchronizes the start of a sawtooth voltage in a small range on both sides of the zero passage of the power-supply sinewave for the load.The device is employed in electric heating systems.

Abstract: Control of a heating system by means of modulating electronic thermostats. Two thermostats are coupled by an opto-electronic device in order to meet the requirements with respect to the "bi-junction" heating system. A double power-limiting device moreover allows the ratio of the maxiumum power dissipated by the two resistors with which the heating convector is equipped to be varied.

Abstract: A temperature transducer includes first and second resistor bridges connected across a voltage source and first and second differential amplifiers. A first input terminal of the amplifiers are connected together to a common junction of the first resistor bridge. The second input terminals are connected to the second resistor bridge, one directly and the other via a voltage divider so that the input voltages of the differential amplifiers are mutually shifted to obtain two different operating voltage thresholds.