Abstract: A visual indicator lamp support is provided comprising an elongate insulating body having a front face and a rear face substantially perpendicular to its longitudinal dimension and forming, at its front face, jaws for insertion of the indicator lamp, a bearing surface inside said body cooperating with the rear face of the indicator lamp, holes through which the wires thereof extend formed through said body and means for securing to a printed circuit card, wherein said body forms a reference surface perpendicular to said rear face and joined thereto by a re-entrant surface adapted for freeing a portion of said wires and shaped so that bending back of said body from a first position in which its rear face is in abutment against the card and plays the role of spacer defining a pre-determined distance between said rear face of the indicator lamp and the surface of the printed circuit for soldering said wires to a second position in which said reference surface is in abutment against the card, results in causing p

Abstract: The switch comprises a stationary contact (2) and a moving contact (3) subjected to the action of a magnetic component (12). The moving contact (3) is carried by a rocker-arm (4) which pivots about a pin (10) rigidly fixed to a control device (6). The extremity (4a) of the rocker-arm carries a second pivot-pin (15) which is connected to a mechanical threshold device (18). The second pivot-pin is capable of displacement between a normal position in which the contacts (2, 3) can be closed and opened by the control device and a trip position in which the contacts are permanently separated. The magnetic component (12) occupies a position such as to exert on the rocker-arm (4) a torque which increases the contact pressure prior to tripping of the threshold device and produces a pivotal displacement of the rocker-arm about its pivot-pin (10) in the direction of opening of the contacts after tripping of the threshold device (18).

Abstract: A small low power electromagnetic valve is provided using valving means for providing pneumatic switching. Two orifices connected respectively to the pressure and to the discharge side are alternately closed by a first valving means carried by the plunger core of an electromagnet and respectively by a second valving means associated with a weak spring; a lever receives one end of the plunger core and the active face of said second valving means at pivoting distances, 1 and L, such that ##EQU1## where .phi..sub.1 and .phi..sub.2 are diameters of the orifices.

Abstract: A switch device is provided comprising means for controlling the separation of the contacts and for inserting an electrically insulating screen between the contacts during opening thereof, said screen cooperating with an electrically insulating surface formed by one of the walls of a substantially closed arc chamber, for shearing the arc between the contacts, the control of the movement of the screen being obtained by propulsion means essentially separate from those causing the separation of the contacts, while the whole is arranged so that substantially complete shearing of the arc is obtained before it has had time to stabilize itself, substantially total sealing being obtained between the screen and said surface when they are in abutment.

Abstract: Stage for a system for distributing pneumatic control signals by electrical means, comprising a large number of associated stages. Each stage comprises a removable electrical valve (141) having an electro-magnet (33) of very low power, and a fixed socket (5) into which it fits: a pneumatic amplifier (57) is housed in the body (51), of the socket and feeds relatively large amounts of fluid to an outlet connector (26) when it is activated by the outlet of a low flow pneumatic switch (40); a non-return valve (88) protects the amplifier against pressure perturbations in the discharge duct (4). Numerous thin stages of a thickness close to 17.5 mm. can with advantage be used as an interface between a pneumatic installation (28) and a control center (24) supplying low level electrical signals.

Abstract: The bistable electromagnet comprises a magnetic circuit partially surrounded by a winding constituted by a series of links (M1, M2, M3, M4, M5, M6) interconnected by air gaps, the links of a first type being movable relative to the other links of a second type, certain types of links comprising a permanent magnet (1, 3, 5, . . . ) provided on its pole surfaces with pole pieces (7, 8; 11, 12; 15, 16; . . . ) whose ends define two air gap zones with the neighboring links of the other type.

Abstract: The device for fixing an object by screwing to a section having two flanges directed substantially towards one another and defining therebetween a longitudinal opening comprises an elongated plate provided with one of the threaded portions and rotatable in a plane substantially parallel to that of the flanges of the section. In a free position, the longitudinal direction of the plate corresponds substantially to that of the section. In a retained position, the plate is retained under the flanges of the section and immobilized in one at least of the directions of rotation. Resilient means are provided for urging the plate towards the flanges of section in the retained position. The resilient means bear on a wedge intended to be inserted between the external face of the flanges of the section and the object to be fixed. This wedge has a passageway for a connecting rod between the plate and the other screw fixing element.

Abstract: A current limiting switch is provided comprising two mobile levers subjected to the action of springs which apply, one against the other, separable contact pieces placed at the respective ends thereof; a thin electrically insulating screen placed between the levers so that its edge is inserted between the contact pieces while maintaining complete insulation between the levers when these latter move away from each other, following short circuit currents flowing in the switch, wherein the ends of the levers, where the contact pieces are placed, are situated in the immediate vicinity of an insulating surface of the case, so that the path of the arc is essentially tangential with respect to the movement of the mobile contacts, the movement of said edge towards and against said insulating surface causing constriction of the arc and completely insulating from one another the two opposite and sealed chambers which the screen separates within the internal volume of the case.

Abstract: The invention provides a magneto-thermal device for overcurrent relays.The end of a core, whose axial position may be adjusted with respect to a mobile plate, placed opposite and pivoting about one end of the yoke, is secured against movement by a wedge which is guided in a groove belonging to a flange of the coil shell.This device may be used in any thermal relay where a stable and precise adjustment of the tripping current threshold is desired.

Abstract: On at least one of two walls (16) (17) a terminal (7) housing (21) has a rib (44) respectively (45) that causes lateral distortion of a tubular housing (38) (39) which is part of a cover (3) so that the head (11) of a bolt of the terminal is gripped. This device, which is extremely simple to assemble, is recommended to make the terminal bolts so they cannot be lost and to hold them in an open position prior to wiring.

Abstract: From a measurement of the response of a thermal enclosure to an action, a set of coefficients representative of the pulsed response of the enclosure as a function of the operating temperature is elaborated by means of an algorithm, each pulsed response is recorded and the model is represented by sets of coefficients stored in different memory blocks connected to a microprocessor or microsystem (53) using the model and a set of algorithms for regulating the enclosure.

Abstract: A contactor capable of having a very high breaking power comprises a movable contact carrier bridge (3) having a central part in the form of a blade (3c) and conducting J-shaped pieces (2a-2b) supporting fixed contacts. A non-magnetic blade bent in the form of a U is mounted slidable inside a hollow movable insulating contact holder (1) and guides and holds at its upper end a magnetic plate (8) cooperating with said blade (3c) and forming an air-gap with another U-shaped magnetic piece (6), disposed between the legs of the bent blade (5) and integral (at 7) with the contact holder (1). A contact pressure spring (4) bears on the basis of the U-shaped magnetic piece (6) and on the bottom of the bent blade (5).

Abstract: Reversing contactor with mechanical locking. The casing (2) of the device includes a half-casing (3) to which are coupled two identical covers (70, 71), each of which closes one of two housings (9, 10), each of which receives the fixed and movable pieces of an electromagnet and the corresponding sets of contacts (49, 50). Such a contactor, which lends itself especially well to compact production, is used to change the direction of a motor with every guarantee of safety.

Abstract: An electro-magnetically controlled apparatus is provided having in a box an electro-magnet adapted to move an armature subjected to the force of a return spring developing an initial force, a contact holder associated with the armature and presenting side by side a plurality of pairs of housings each comprising a lower housing close to the armature, and an upper housing placed above, a plurality of mobile reversible bridge contacts, respectively placed in the respective housings and each receiving the action of a pressure spring which urges them against a cross piece separating two housings of a pair, these bridge contacts being adapted to cooperate each one with a pair of fixed reversible contacts disposed in the case so as to form one of the possible configurations of opening or closing switches placed in power or signalling circuits. The contact holder (9) comprises four pairs or superimposed housings (10.sub.U --11.sub.U, 10.sub.V --11.sub.V, 10.sub.W --11.sub.W, 10.sub.X --11.sub.X).

Abstract: A contactor apparatus comprising means for automatically opening power circuits should faults occur and a local control member.This apparatus comprises a plurality of power lines (8) each comprising a power contact (2) adapted to be opened during a short circuit by a striker (28), a coil (13) and a bimetallic strip (14), responding to smaller overloads. The elements responsive to overcurrents act on a cascade of sudden tripping devices (19) (17) (31) which govern the positions of the local control member (18) and act on a control switch (4) placed in series with the electromagnet (1).Such an apparatus is advantageously used in installations where protection of the lines, remote control and local control of the consumer apparatus are desired.

Abstract: A self-locking lock assembly for a cabinet or locker door includes a rotary operating member (25) having a head (26) adapted to be operated from the exterior of the door, and an inner bolt (31) provided with a rib (36) inclined with respect to the axis of said operating member so that its cooperation with a flange (14) of a door opening (3) causes it to rotate while compressing a return spring (41) whenever the door is manually pushed. The lock assembly can advantageously be used in cabinets or lockers the doors of which must be opened only by safety personnel, but may be closed by maintenance personnel.

Abstract: A coupling piece (12) which is connected to a mobile component (18) of the contactor, has two stepped thrust surfaces (19, 20), each able to cooperate with one of two locking levers, (23, 24), both of which are repelled by an electromagnet (32) when the contactor is turned off. This device is particularly advantageous when the mobile components of the contactors move over different distances.

Abstract: A movable contact bridge (12) is associated with contact carrier (7) by means of a stirrup (28), a pressure spring (25) and a resilient blade (45). The stirrup has two hooks (35, 36) which hold the blade in place and facilitate removal and positioning thereof because of the gap (60) separating these hooks. This contact bridge is advantageously used in contactors of minimum rated power greater than 100 amps.

Abstract: A removable group of auxiliary switches is mounted on the upper surface (4) of the contactor housing by hinging means (28, 29) and resilient locking (32, 33) placed respectively in the area of the base (8) and of partitions (5) which separate the principal terminals (6). The group comprises two switches (make and break). Coupling in this manner makes it possible to increase the number of auxiliary switches without increasing the contactor's frontal or lateral congestion.

Abstract: With this circuit, a current may be caused to flow through a contact (K) controlling the voltage supply of an electronic control circuit (24), of sufficient intensity for the reliability of the contact to be good, without the current flowing in the control circuit (24) being too high and this independently of the supply voltage (terminals E, 44) applied to the supply terminals of the user circuit (U). For this, the control circuit (24) is fed with power when the contact (K) is closed, through said contact (K), a first diode (31) and a resistor (32) connected in series, whereas a piloting circuit (11), which is an integrated time delay or memory circuit associated with said user circuit (U), is then supplied through said contact (K) and a second diode (26). When contact (K) is open, said piloting circuit (11) is fed through a third diode (29) and a Zener diode (30), the second diode (26) then preventing the control circuit (24) from being supplied with power.