Abstract: The invention relates to a device for controlling the opening and closing of a compressed gas consuming circuit (U), the device comprising a normally-closed two-position cutoff valve (2), said cutoff valve (2) having a pilot chamber (2a) and a counter-pilot chamber (2b) permanently in communication with a source (P) of compressed gas, directly for the pilot chamber (2a) and via a constriction (6) for the counter-pilot chamber (2b), the counter-pilot chamber including a purge branch connection (8) that is opened or closed by a two-position, two-port valve (9).

Abstract: The invention relates to a block of pneumatic modules consisting of a plurality of adjacent distribution modules, juxtaposed and kept tightened against each other along parallel faces and between two end modules by assembly means passing through all the distribution modules and at least one of the end modules. The assembly means comprise, for each distribution module, a single through rod with a first externally threaded end and a second internally threaded end, the second end of each rod being shaped as a head whose external surface is not of revolution about the axis of the rod and which, in service, at least partially projects from a face of the module through which the rod passes, the face of the adjacent module turned towards the head having a recess corresponding in shape to the above mentioned head.

Abstract: The invention relates to a block of pneumatic modules consisting of a plurality of adjacent distribution modules, juxtaposed and kept tightened against each other along parallel faces and between two end modules by assembly means passing through all the distribution modules and at least one of the end modules. The assembly means comprise, for each distribution module, a single through rod with a first externally threaded end and a second internally threaded end, the second end of each rod being shaped as a head whose external surface is not of revolution about the axis of the rod and which, in service, at least partially projects from a face of the module through which the rod passes, the face of the adjacent module turned towards the head having a recess corresponding in shape to the above mentioned head.

Abstract: A miniature solenoid valve comprising: a valve body; an electromagnet having a yoke secured to the body and a plunger core movable relative to the yoke along a longitudinal axis of the electromagnet; a pneumatic chamber formed in the body adjacent to the end of the plunger core that faces away from the yoke, into which chamber there opens out freely a first duct and, each via a respective seat, second and third ducts, with the openings of the second and third ducts facing in opposite directions and being coaxial about the longitudinal axis of the electromagnet; and first and second valve members facing the two seats respectively with clearance, the first valve member being carried by the plunger core and the second valve member being carried by moving equipment held in contact with the plunger core so as to be moved therewith, in which the two seats are provided at respective ends of a single seat-carrier piece which includes internally the ends of the second and third ducts, said piece being engaged in t

Abstract: An interface module for an island of electropneumatic control valves on bases, the module comprising a body having at least one face for connection to a base of the island and, away from said base, means for coupling to at least a first external duct, said body having at least one internal main channel, a secondary channel, and a branch internal channel for connecting the main channel to the secondary channel, which branch channel is provided with a two-position selector which, depending on its position, provides continuity for the connection or interrupts it. The selector also has has connection means for connecting the secondary channel to a second external duct, which means are accessible from outside the module when the selector is in its interruption position and are masked when the selector is in its continuity position.

Abstract: A modular pneumatic distribution assembly comprising a plurality of modules, each formed by a pneumatic distributor fixed on a base which comprises at least one common length of pressure duct and at least one common length of exhaust duct, and means for fixing to an adjacent base, the assembly being remarkable in that each distributor is a distributor having a flat slide distributor communicating with the base via three distribution orifices and a pressure orifice, the axis of the slide mechanism being parallel to the direction of the common pressure and exhaust ducts in the bases, in that at least two distributors of the assembly are of different calibers, one having distribution orifices of a section that is at least twice the section of the distribution orifices of the other, and in that the outside profile of the section of each module on a plane perpendicular to the axis of the slide mechanism is identical regardless of the caliber of the distributor.

Abstract: An assembly of operational connections for a pneumatic jack, having combined mounting for ensuring at least two operations. A first operational connection (1) ensuring the operation of regulating the discharge from the jack is provided beyond its endwall (4) which is pierced with a hole (5), with an assembly collar (6) in which is mounted a second operational connection (15) which ensures any other desired operation, arranged perpendicularly to the first operational connection (1) and equipped with a common projecting threaded ferrule (19) for the mounting of the assembly upon a jack cylinder.

Abstract: An emergency drain device for pneumatic cylinders which is integrated in an orientatable connection fixed directly to the cylinder body and comprises a valve which closes an orifice of the bolt of the connection, going to the atmosphere, when a control pressure is applied to the head of the bolt.This device is advantageously used in installations where a general isolating switch, controlled by the same control pressure, connects the general distribution line to the atmosphere, for example in the case of an emergency, when said pressure disappears.

Abstract: The invention relates to a pressure relay comprising inside its body, and besides a distributor device with a pressure inlet, an outlet and an exhaust, an auxiliary conduit of large cross-section which is connected with a control input of the said distributor device and comprises means to mount the said body on the jack, and to receive a pipe fitting supplying pressure to a jack.The invention finds an application for signalling the outermost positions of a jack piston, or in combination with branch-pipe type jacks.

Abstract: Compressed gas saving device designed to be implanted in a pipe system connecting a control valve outlet to the inlet of a pressure-user apparatus constituted by a body in which a first passage is provided which passage starts from a first end of the body, provided with means connecting it to the control valve, towards a second end of the body, provided with means connecting it to the said pipe system, the first passage traversing a seat provided in the said body, and adapted to be closed off by a valve returned on the said seat by a spring member, the effect of which is adjustable in intensity by means of a hand-operated adjusting member and tends to oppose the rising force of the valve head generated by the gas flowing from the control valve, whereas a second passage, provided in the body, constitutes a bias of the said first passage, short-circuiting the aforesaid valve head provided with a one-way valve whose flowing direction is that of the gas issued from the pressure-user apparatus, the said adjusting

Abstract: A switch provides for cutting the pressure feed for distributors placed downstream of it, and for coupling the feed of these distributors to an exhaust of the switch itself, and has faces for connection with faces of the distributors, channels for circulation of exhaust fluid, members for connection with adjacent distributors, and is adapted for mounting on a conventional profiled element. The switch is particularly advantageous for ensuring the control of the feed of one or of several jacks coupled to distributors.

Abstract: A locking device, for a pneumatic sequential control phase module, is constituted by an apparatus adapted to be placed between a base and a housing containing a bi-stable memory, and comprises a selector member receiving cancelling signals and auxiliary signals and the output of which is coupled to a locking input of an inhibitor element placed in series with the channel which transmits the control signals for placing the memory in logic state "1".

Abstract: A locking device is integrated in a coupling fixed on a ram cylinder for feeding the cylinder with a first fluid. The circulation of that fluid is controlled by a second fluid. The device has (1) a cylindrical member with a tightening head at a first end, a second threaded end to engage in the cylinder, and an intermediate portion between the two ends. The intermediate portion has an axial outlet passage to the cylinder, and a lateral opening terminating at the passage. The device has a coupling head with a through bore, and an internal passage for the first fluid. The bore is shaped to receive the intermediate portion and to couple the opening to the feed passage. The device has movable internal members to modify circulation of the first fluid by moving under the combined effects of a resilient element and the pressure of a second fluid applied to an external locking inlet.

Abstract: In an auxiliary control device for a pneumatic distributor the improvement is the integration, in a housing of the body of the distributor closed by a stopper, of a commutator sub-assembly placed on each control channel, thereby making it possible to obtain its actuation by a manual handle, by an electromagnet or by a pneumatic actuator, without necessitating the manipulation of delicate elements.

Abstract: A sequencing logic circuit comprises a blocking means for preventing phase jumps caused by the untimely presence of a release signal. An inhibitor device is placed on one of the channels feeding a storage relay, placed upstream of said release signal, in such a manner as to prevent the transmission thereto of a pressure for placing it in logic state "1." This inhibitor device is actuated by the release signal and does not permit any communication between the latter and the channel controlled.

Abstract: Unidirectional flow limiter housed in a union between a pipe and a user apparatus, comprising a first channel, a second channel, a flow reduction member between the two channels, a third channel, a non-return valve in the third channel and constituted by a deformable annular member placed concentrically about one of the first or second channels.

Abstract: The invention provides the functional reliability of an automatic device, constituted by the association of phase cells comprising, for each phase, a pneumatic AND gate and bistable memory, which is ensured by the interposition of a threshold relay between the feedback interrupter associated with a phase all and the control input of the memory.

Abstract: The invention provides a control circuit for a pneumatic shift register constituted by phase cells associated with an assembly of two threshold relays, each having a supply input and a control input which inhibits the output when the pressure that it receives is not lower than a pressure threshold which is low with respect to the control threshold of the memory contained in the cell.

Abstract: Unidirectional flow limiter housed in a union between a pipe and a user apparatus, comprising a first channel, a second channel, a flow reduction member between the two channels, a third channel, and a non-return valve in the third channel constituted by a deformable annular member placed concentrically about one of the first or second channels.

Abstract: Improved distribution device constituted by a base and a distributor associated therewith, having internal channels in which the pneumatic fluid circulates normally only in one direction. At least one of these channels possesses a non-return valve disposed near the surface connecting the base and the distributor, allowing the circulation of the fluid in the one, normal direction of circulation. The invention finds interesting application in the domain of pneumatic installations.