Abstract: An adjustment and dialogue device, more particularly for speed variators comprises potentiometers for adjusting the operating parameters of the variator, a unit displaying these parameters, an advance knob for successively displaying these parameters, a processor whose inputs are connected to the advance knobn and to the potentiometers via a converter and whose outputs are connected to the display unit, and a support being one part of a printed circuit control card located in a casing whose front face has a removable part which can be opened by the user.

Abstract: An electromagnetic switching apparatus with interchangeable switches is provided, including a base with a bottom and a cavity containing an electromagnet whose mobile armature, through a disconnectable transmission piece, actuates the mobile contact of a switch housed in an insulating case removably associated with a fixing face of the base opposite the bottom, said fixing surface including openings for the passage of said transmission piece, said base having connection terminals connected to contact pieces which cooperate with corresponding pieces connected to the switch.

Abstract: A device for the production of a tachometry signal of infinite resolution and without ripple from an inductive position sensor. The sensor is fed by a sinusoidal reference signal and supplies two phase signals. A resistance-capacitance circuit tuned to the frequency of the reference signal is fed by the two phase signals of the sensor and supplies a sinusoidal signal whose phase angle is proportional to the rotation of the sensor. This signal is then digitized and processed by digital phase comparators and low-pass filters before differentiation. This includes the use of particular digital phase comparators, each associated with a particular return to zero detector, to produce by a storage flip-flop and an electronic switch, the outgoing tachometry signal with the aid of a single differentiator with a device for elimination of discontinuities.

Abstract: The manipulator delivers signals characteristic of the orientation of an operating lever (2) in space. The lever is deflectable by a transverse thrust, from a reference or neutral position, and is elastically returned to that neutral position. The lever (2) is articulated on a casing to control the position of at least one movable member (3) interacting with at least one pick-up (4) to deliver an electrical signal dependent upon the position of the lever. Two cams (7, 8) resiliently biased toward each other oppose to the angular deflection of the operating lever (2) an elastic reaction which differs according to the orientation of the lever (2) with respect to its neutral position. In an embodiment, these cams are carried respectively by a ball joint of the lever and by a piston slidable in the casing and urged by a spring.

Abstract: A static switch is provided for controlling the closing and opening of an AC electric circuit including an inductive load. This switch includes an inhibitable thyristor having an RCD network for protection against the voltage gradients on turn-off. The anode-cathode path of the inhibitable thyristor and its protection network are connected to the AC energy source through a full wave rectifier device, whereas a voltage clipping member is disposed at the terminals of the rectifying device.

Abstract: A bistable polarized electromagnet is provided having a mobile armature with a permanent magnet and pole pieces which cooperate with a fixed yoke through two pairs of air gaps for each of which one is variable whereas the other is substantially constant. This electromagnet may further have asymmetric or symmetric forms of revolution for easy replacement of the excitation coil.

Abstract: The invention provides a clip device for establishing a disconnectable electric connection between an omnibus bar and a fixed conducting knife. The clip is formed of two symmetrical flat conducting tongues disposed opposite each other and connected together by two compression springs. The clips are spaced apart and held apart from each other by a stirrup against which each of the legs of the clip bears in a double layer effect after unclipping thereof from the bar by translation.

Abstract: An input/output device is used for a programmable controller having on input/output cards a plurality of electronic channels forming the logic interfaces between the connection bus with the central unit and the sensors or the actuators connected to the controllers; this device further uses electronic circuits for monitoring the good transmission of input/output signals by the adaptation interfaces providing for the galvanic isolation of the bus with respect to the sensors and actuators of the controlled automatism.

Abstract: An electric apparatus is provided with a manual control switch with indication of the "on" and "off" positions, the case of said apparatus having on a front face a pivoting manual control switch capable of occupying two endmost "on" and "off" positions, said switch being mounted on a shaft provided in the case. The switch is pierced with two openings which, by a contrast between the colors of the switch and of the underlying shaft, stand out against the shaft, one of rectilinear shape indicating "on" position and the other of circular shape indicating the "off" position.

Abstract: A device is provided for adjusting the thermal current of a bimetallic strip thermal tripping device and a protection switch including such a device, said adjustment device including a graduated wheel accessible from outside the switch box and having inner toothing; a flange centered on the wheel, with a member meshing with the toothing of the wheel, and formed with an excentric groove; a tumbler rotated through a finger engaged in the groove of the flange; a hook mounted for pivoting about a pin fixed with respect to the case; and a lever mounted for pivoting by means of a pin on the hook and connected to the tumbler by a stud, the lever being positionable with respect to the bimetallic strip at a given distance depending on the value of the thermal tripping current.

Abstract: Each phase circuit comprises a static switch of the IGT or GTO type, between the anode and the cathode of which there is arranged in parallel a series mounting of a CTP resistance and of a normally open switch which is closed when a current detector detects a short abnormal intensity lower than six times the rated current; said static switch is locked either immediately when the rate is higher than six, or with a short delay on the contrary. Said device is particularly convenient to be used in industrial installations where it is desired to replace the associations of contactors, thermal relay and circuit breaker by static apparatuses.

Abstract: Tapping apparatus comprising: a body (5) suitable for being mounted on a moving element (4) of a press; a system of multiplying gears (14) having their axes parallel to the direction (F) of motion of said element, and placed on said body; a motion transforming device having a large pitch screw (26) and nut (27) for transforming the linear stroke of said element into a rotary motion which is applied to a first gear wheel of the system; and a tapping head (18) which is rotated by the last gear wheel (17) of the system and which is driven in translation by the body, said head comprising a fixed casing (32), a spindle (36) which pivots in said casing and is rotated by the last gear wheel (17) and a tool-carrying clamp (51) which is rotated by the spindle and which is capable of longitudinal displacement against pneumatic return means (F.sub.d) of adjustable force.Applicable to machine tools.

Abstract: An electric switch protective apparatus is provided having a mobile contact which may be separated from a pseudo-fixed contact to which it is applied, either through the movement of coupling means of the mobile contact, or through the lateral movement made by a support of this pseudo-fixed contact under the action of connection means associated with a remote controlled electromagnet.

Abstract: A coaxial cable transmission system is provided in which the coaxial cable is pre-equipped with tapping sleeves fixed to the coaxial cable and spaced apart along its length at a predetermined pitch, each sleeve-tapping box pair including mutual positioning and fixing means, each sleeve provided with at least one closable central well for passing and guiding therethrough a central connecting element associated with the tapping box and intended for making contact with the central conductor of the coaxial cable.

Abstract: In an angled connection in accordance with the invention, the one-way flow of fluid at a restricted flow rate is provided in a direction opposite to direction F by co-operation between a wall (23) having fixed orifices and a plug (26) having moving openings (31). The area of overlap between the fixed orifices through the wall (23) and the moving openings (31) is adjustable by rotating the plug (26). Flow in the opposite direction, i.e. the direction of arrow F, is provided at full flow rate by openings (22) provided through the plug (26), which openings are closed by a non-return valve (37) which allows flow in said direction F. The plug (26) and the wall (23) are pressed together in sealed manner by a resilient member (33). The plug (26) is rotated by an outside ring (38) on the tubular portion (5) of the connection, said ring being coupled to the plug via a slot through the tubular portion (5), which slot is isolated in sealed manner from the path of fluid flow through the connection.

Abstract: An input card (7) is put in communication with apparatuses (16) the operation of which is to be monitored in order to initiate certain operations. A terminal-box (13) is interposed between the card (7), which possesses detector circuits (17), and the members (16).The two ends of each circuit (17) are associated with a respective inner terminal (12) of the terminal-box (13), and the two ends of each member (16) are associated with a respective outer terminal (14) of the terminal-box (13). Shunts (19,21) mounted in the terminal-box and connected to supply terminals (14a,14b) put one of the ends of each circuit (17) or member (16) at a common potential. The other terminal of each member (16) is connected to the other terminal of a circuit (17) by means of a connection (18).The invention is used to avoid the need for auxiliary terminal-boxes and cards with a common potential point.

Abstract: The invention provides a device for selectively preventing actuating modes of a manual control member equipping the face of the case of an apparatus and able to change over from a first position corresponding to a first function, to a second position corresponding to a second function and, from the first position to a third position corresponding to a third function. It includes a cover mounted for pivoting on the case and able to be applied against said face. This cover allows manual access to said member and includes means for allowing this member to change over from the first position to the third position and preventing it changing over from one to the other of the first and second positions.

Abstract: A small electrically operated valve in which a control solenoid sub-assembly is mechanically associated in a non-dismantleable fashion by means of a face with the corresponding face of a pneumatic switching sub-assembly having a valve member. Each of the two sub-assemblies is of plastics material and comprises passage portions which may be brought into aligned relationship to form at least one aligned passage capable of receiving at least one small cylindrical metal pin, a first end thereof being positioned below the surface at which the entry of the aligned passage opens, while the other end is in the vicinity of a metal protective portion which is positioned inaccessibly in either one of the two sub-assemblies and which is disposed substantially transversely to the axis of said aligned passage.

Abstract: The device comprises a sink (12) and a clamping devicew (17, 18) associated to each semiconductor component (15, 16) for applying the latter to the sink (12). The clamping device bears on one hand on the sink (12) and on the other hand on the semi-conductor (15, 16) through a laminated connection bar (20) to present, length-wise and from a clamping range (23) on a fixed support (10), a flexibility enabling the bar (20) to be applied to bearing ranges of semi-conductor components having different heights. The device may be used for variable height power semi-conductors.

Abstract: A terminal for generating programs usable by a programmable controller comprising: a screen; a keyboard having more especially a set of keys assigned to graphic symbols and a processor for generating, from the data entered on the keyboard, a program usable by the controller and storage thereof. The symbols of at least one contact type graphic representation mode and a sequential type representation mode are assigned to said graphic keys.